Welcome to the ultimate creative journey for crafters and DIY enthusiasts alike! Mastering the art of a DIY silicone keychain allows you to craft stunning, personalized accessories from the comfort of your home. This guide is specially designed to walk you through every step of creating a beautiful, professional-looking leather-look keychain, transforming simple materials into a unique piece of functional art. Whether you’re looking to make a heartfelt personalized gift or simply explore a new and rewarding hobby, you’ll find all the inspiration and detailed instruction you need right here to begin your crafting adventure.
1. Must-Have Crafting Tools for Silicone Keychain Making:** Exploring mixing cups, stir sticks, scales, and other essential **Crafting Tools**
1. Must-Have Crafting Tools for Silicone Keychain Making
Embarking on the journey of creating your own DIY silicone keychain is an exciting venture into the world of hands-on creativity. Whether you’re aiming for a sleek leather-look finish or experimenting with vibrant colors and textures, having the right tools at your fingertips is essential. The process of silicone crafting is both an art and a science, and the quality of your finished piece often hinges on the precision and reliability of your equipment. In this section, we’ll explore the indispensable crafting tools that will elevate your keychain-making experience from a simple hobby to a professional-grade endeavor.
Let’s start with the foundation: mixing cups. These are not just any ordinary containers; they are your primary vessels for combining silicone components. Opt for clear, graduated cups made from polypropylene or similar non-reactive materials. The transparency allows you to monitor the mixing process closely, ensuring that parts A and B of your silicone are blended thoroughly without streaks or unmixed portions. For a DIY silicone keychain project, especially one mimicking leather textures, achieving a homogeneous mixture is critical to avoid curing issues or inconsistencies in the final appearance. Disposable cups are convenient for quick clean-up, but reusable ones with measurement markings offer both eco-friendliness and accuracy.
Next, stir sticks might seem rudimentary, but their role cannot be overstated. Wooden or plastic sticks are ideal for manually combining your silicone components. For smaller batches, such as those typical for keychain molds, a slow, deliberate stirring motion helps minimize air bubbles—a common nuisance that can mar the surface of your design. If you’re feeling adventurous, consider using a palette knife for spreading and texturing, especially if you’re aiming to replicate the grained look of leather. Remember, patience during mixing pays off in a flawless, bubble-free finish that looks professionally crafted.
Precision is paramount in silicone work, and that’s where a digital scale comes into play. Unlike volume measurements, weighing your silicone parts ensures exact ratios, which is crucial for proper curing. A small, accurate scale capable of measuring to 0.1 grams is perfect for DIY silicone keychain projects, as even minor deviations can lead to tacky or improperly set silicone. For example, if your silicone requires a 1:1 ratio by weight, the scale eliminates guesswork and guarantees that your mixture will harden as intended, resulting in a durable, leather-like keychain that stands the test of time.
Beyond these basics, several other tools can enhance your crafting process. Silicone molds are, of course, central to shaping your keychains. Choose molds with intricate designs if you’re going for a detailed leather texture, or create custom molds for a unique touch. Release agents or mold sprays can prevent sticking and make demolding effortless, preserving the fine details of your design. For adding color, silicone pigments and mica powders offer a spectrum of possibilities—think rich browns and blacks for that authentic leather appearance, or metallic accents for a touch of elegance.
Don’t overlook disposable gloves and work surface protection. Silicone can be messy, and protecting your hands and workspace ensures a safe and enjoyable experience. Additionally, a heat gun or torch is invaluable for popping surface bubbles after pouring the silicone into molds, giving your keychains a smooth, professional finish.
Finally, consider investing in a vacuum chamber if you plan to scale up your projects. While not strictly necessary for beginners, it removes trapped air from the silicone, resulting in crystal-clear or perfectly solid pieces—ideal for high-detail designs like leather-look keychains.
Equipping yourself with these essential tools not only streamlines your workflow but also unlocks endless creative potential. As you dive into your DIY silicone keychain project, remember that each tool plays a part in transforming raw materials into wearable art. Embrace the process, experiment with techniques, and let your craftsmanship shine through every piece you create.
1. Creating and Using Pattern Templates for Unique Shapes:** How to design and implement **Pattern Templates** for your **DIY silicone keychain**
1. Creating and Using Pattern Templates for Unique Shapes
Crafting your own DIY silicone keychain begins with the heart of creativity: the pattern template. This foundational step transforms your vision into a tangible, wearable piece of art. Whether you’re aiming for geometric precision, whimsical silhouettes, or personalized motifs, designing and implementing pattern templates allows you to create keychains that are as unique as you are. Let’s dive into the process of bringing your imaginative shapes to life.
Designing Your Pattern Template
The first step in creating a standout DIY silicone keychain is sketching your design. Start by brainstorming shapes that resonate with your style or purpose—think animals, celestial bodies, abstract forms, or even custom initials. For beginners, simplicity is key; opt for designs with clean lines and minimal intricate details, which are easier to cast and demold. If you’re feeling adventurous, layered or multi-part designs can add depth and complexity to your finished piece.
Once you have a sketch, transfer it onto a sturdy material to serve as your template. Cardstock, acetate sheets, or even thin plastic are excellent choices because they hold their shape and can withstand repeated use. For precision, consider using digital tools: graphic design software like Adobe Illustrator or free alternatives such as Inkscape allow you to create and refine your design before printing it. This is especially useful for symmetrical patterns or designs requiring exact measurements.
When finalizing your template, keep in mind the practical aspects of silicone casting. Avoid overly thin sections—those narrow connectors or tiny protrusions might not hold up well during demolding. A good rule of thumb is to ensure that no part of your design is thinner than 1/8 of an inch to maintain structural integrity. Additionally, think about how the keychain will function: include a small hole or loop in your template for the keyring attachment, typically placed near the top of the design.
Implementing the Template in Silicone Crafting
With your pattern template ready, it’s time to move into the hands-on phase. Place your template on a smooth, non-stick surface such as a silicone mat or parchment paper. This will be the base for creating a mold boundary. Using mold putty or a pre-made mold frame, secure the edges around your template to form a reservoir for pouring the silicone.
Next, mix your silicone according to the manufacturer’s instructions. For a leather-look finish, consider using two-part silicone compounds that can be tinted with compatible pigments. Earth tones like browns, blacks, or tans can mimic the appearance of leather, while metallic additives can create accents resembling stitching or hardware. Pour the silicone slowly over the template, ensuring it fills every contour without trapping air bubbles. A toothpick or small tool can help nudge the silicone into intricate areas.
After pouring, allow the silicone to cure fully. This can take anywhere from a few hours to a day, depending on the product used. Once cured, gently demold your keychain by carefully peeling away the template and any mold boundaries. If you encounter resistance, flex the silicone slightly—it’s naturally pliable, which makes releasing detailed shapes easier than with rigid materials.
Inspiring Creative Possibilities
The true joy of using pattern templates lies in the endless customization options. For instance, create a series of nature-inspired keychains—leaf shapes, feathers, or shells—using organic, flowing lines that capture the beauty of the outdoors. Or, design templates that tell a story: a constellation pattern for astronomy lovers or a miniature book shape for bibliophiles. Personalization elevates the DIY silicone keychain from a simple accessory to a meaningful keepsake or gift.
Don’t hesitate to experiment with mixed materials. Embedding elements like glitter, dried flowers, or even small charms into the silicone before it cures can add texture and visual interest. For a leather-like effect, try impressing textures into the surface using tools or stamps after pouring the silicone but before it sets. This technique can replicate the grain of leather, enhancing the rustic charm of your creation.
Remember, pattern templates are not just functional—they’re a gateway to innovation. As you grow more confident, challenge yourself with multi-part templates that allow for layered designs or interchangeable components. The process is forgiving; silicone is durable and easy to work with, making it ideal for both beginners and seasoned crafters.
By mastering the art of pattern templates, you unlock the potential to produce DIY silicone keychains that are limited only by your imagination. Each shape you create becomes a testament to your creativity, ready to be carried with pride or shared with others. So gather your materials, sketch your ideas, and embark on a crafting journey that blends practicality with artistic expression.
2. Choosing Your Silicone: Types and Properties for a Leather Look:** A guide to **Silicone Molding** materials, focusing on **Silicone Hardness** and flexibility
2. Choosing Your Silicone: Types and Properties for a Leather Look
When it comes to crafting your own DIY silicone keychain with a realistic leather appearance, the choice of silicone is not just a step—it’s the foundation of your entire project. The right silicone can mimic the supple texture, subtle flexibility, and refined finish of genuine leather, elevating your creation from a simple trinket to a personalized work of art. In this guide, we’ll explore the world of silicone molding materials, focusing on two critical properties: hardness and flexibility. Understanding these elements will empower you to select the perfect silicone for achieving that coveted leather-like aesthetic.
Silicone molding compounds come in various formulations, but for crafting keychains with a leather look, platinum-cure silicone is often the top choice. Known for its high clarity, low shrinkage, and excellent tear resistance, platinum silicone allows for intricate detailing—essential when replicating the grain and stitch patterns typical of leather goods. Unlike tin-cure silicones, which can be less durable and may inhibit certain pigments, platinum silicone offers a user-friendly experience with minimal odor and superior results, making it ideal for home crafters diving into their first DIY silicone keychain.
One of the most defining characteristics of silicone—and your key to mimicking leather—is its hardness, measured on the Shore scale. For a leather-like feel, aim for a silicone with a Shore A hardness between 10 and 30. Softer silicones (around Shore A 10-20) emulate the pliability of well-worn leather, perfect for keychains that feel gentle to the touch and bend easily in your hand. Medium hardness options (Shore A 20-30) provide a firmer structure, reminiscent of structured leather accessories like cardholders or minimalist key fobs. By experimenting within this range, you can customize your DIY silicone keychain to match everything from a buttery-soft wallet to a rugged, textured bag charm.
Flexibility goes hand-in-hand with hardness, influencing how your keychain moves and feels in daily use. Leather is prized for its ability to flex without cracking, and your silicone should do the same. Look for silicones with high elongation rates (often 300% to 700%), which ensure that your keychain can withstand bending and stretching—just like real leather. This property is especially important for functional items like keychains, which are frequently tugged, tossed, and attached to bags. A flexible silicone not only enhances durability but also contributes to the authentic tactile experience, making your creation both beautiful and practical.
Color and finish play pivotal roles in selling the leather illusion. Many silicones can be tinted with specialized pigments; for a classic leather look, consider earthy tones like browns, blacks, tans, or even bold hues like oxblood. To achieve depth and variation—similar to leather’s natural patina—you can layer colors or use marbling techniques. Adding a matte finish silicone or applying a light dusting of cornstarch after demolding can reduce shine and enhance that genuine, textured leather appearance. Don’t hesitate to get creative: mix in metallic pigments for faux-stitching details or use a grained mold to replicate crocodile or ostrich textures.
Practicality is key for any DIY enthusiast. When selecting silicone, also consider factors like pot life (the time you have to work with the mixed silicone) and cure time. For home projects, opt for silicones with a pot life of 30 minutes or more, giving you ample time to pour and detail your mold. Cure times can vary from a few hours to a day—plan accordingly to avoid impatience disrupting your creative flow. Always follow manufacturer instructions for mixing ratios and curing conditions to ensure optimal results.
Remember, the magic of creating a DIY silicone keychain lies in experimentation. Start with small batches to test hardness and color combinations before committing to a larger project. Whether you’re aiming for a vintage-inspired key fob or a modern, minimalist design, the right silicone will bring your vision to life with the elegance and durability of leather. Embrace the process, and let your creativity unfold—one pour at a time.
2. Color Theory for Leather Looks: Mixing Pigments Authentically:** Using **Color Pigments** and alcohol inks to achieve realistic browns, tans, and antiquing effects
2. Color Theory for Leather Looks: Mixing Pigments Authentically
Creating a convincing leather-look silicone keychain is an art that hinges on your mastery of color. The rich, organic tones of genuine leather—ranging from warm chestnut browns to sun-kissed tans and deep, antiqued finishes—can be authentically replicated with the right pigments and a thoughtful approach to mixing. By using color pigments and alcohol inks, you can achieve remarkably realistic effects that elevate your DIY silicone keychain from a simple craft to a miniature masterpiece.
At the heart of this process is understanding the foundational colors that mimic leather’s natural variations. Leather is rarely a flat, uniform shade; it possesses depth, highlights, and subtle imperfections that tell a story of use and age. To replicate this, start with a base of earthy tones. Browns and tans are your primary palette, but don’t shy away from incorporating hints of red, yellow, or even black to create complexity. For example, a classic saddle brown can be achieved by mixing a rich brown pigment with a touch of burnt sienna or ochre. If you’re aiming for a lighter tan, begin with a creamy beige base and gradually add small amounts of yellow ochre and raw sienna until you reach the desired warmth.
Alcohol inks are particularly effective for this application due to their fluidity and transparency. They allow you to build layers of color, much like glazing in painting, which is essential for achieving depth. When working with silicone, which has a slightly translucent quality, these inks interact beautifully with the material, creating a sense of dimension. To start, mix your pigments or inks with a silicone-compatible medium if necessary, ensuring even dispersion. Apply your base color first—this will serve as the foundational tone of your leather-look keychain. Once set, use a drier brush or a fine applicator to add darker shades along edges or creases, mimicking the natural wear of leather. For instance, a dab of dark brown or black ink applied sparingly along the raised areas of your keychain mold can create stunning antiquing effects, suggesting years of cherished use.
Antiquing is where the magic truly happens. This technique involves accentuating the recessed areas of your design to simulate age and patina. After applying your base layer, use a slightly darker shade—such as a espresso brown or charcoal gray—mixed with a blending solution to keep it workable. Gently dab this into the grooves and textured parts of your silicone keychain. The alcohol ink will settle into these areas, creating shadow and depth. Then, with a clean, soft cloth or a cotton swab, lightly wipe away the excess from the raised surfaces. This contrast between the highlighted tops and shaded crevices is what gives your piece an authentic, time-worn appearance. Imagine crafting a keychain that looks like a well-loved vintage wallet; the subtle gradients and darkened edges tell a visual story that captivates the eye.
Experimentation is key to unlocking creative possibilities. Don’t hesitate to mix custom colors—for example, combining a mahogany alcohol ink with a drop of gold metallic pigment can yield a luxurious, cognac-like finish perfect for an elegant accessory. Similarly, adding a whisper of green to a brown mixture can replicate the olive undertones sometimes found in rustic leathers. Always test your mixes on a small sample of silicone first to observe how the colors cure and interact with the material. This practice not only refines your technique but also sparks inspiration for unique designs.
Remember, the goal is to evoke the tactile and visual qualities of leather through color. By layering tones, playing with transparency, and embracing imperfections, you transform a simple DIY silicone keychain into a wearable work of art. Whether you’re aiming for a sleek modern look or a rustic, hand-tooled appearance, the principles of color theory empower you to create with confidence and creativity. So gather your pigments, embrace the process, and let each mix of ink bring your leather-inspired vision to life.
3. Safety First: Working with Non-Toxic Components and Proper Ventilation:** Highlighting the importance of **Non-Toxic Components** and safe **Home Crafting** practices
3. Safety First: Working with Non-Toxic Components and Proper Ventilation
Crafting your own DIY silicone keychain is an immensely rewarding experience, blending creativity with tangible results. However, as with any hands-on project, the joy of creation must be paired with a mindful approach to safety. This is especially true when working with materials like silicone, which, while versatile and forgiving, requires attention to the components you choose and the environment in which you work. Emphasizing non-toxic materials and proper ventilation isn’t just a precaution—it’s an essential part of ensuring that your crafting journey remains enjoyable, sustainable, and, above all, safe.
Let’s start with the heart of the matter: non-toxic components. When selecting silicone for your keychain project, opt for food-grade or skin-safe silicone formulations. These are specifically designed to be free from harmful chemicals such as phthalates, BPA, and solvents that could off-gas or cause irritation. Using non-toxic silicone not only protects you during the crafting process but also ensures that the finished product—whether you’re making it for yourself, a friend, or even a child—is safe for everyday handling. Imagine crafting a beautiful, leather-look keychain that not only looks professional but also carries the peace of mind that comes with knowing it’s made from body-safe materials. Brands like Smooth-On or Alumilite offer excellent options that are widely available and perfect for home use.
Beyond the silicone itself, consider the additives you might incorporate, such as colorants or texturing agents. Always choose pigments and additives labeled as non-toxic and suitable for silicone. For instance, mica powders or silicone-specific dyes are excellent choices that provide vibrant colors without compromising safety. Avoid using acrylic paints or other non-compatible substances, which can react poorly with silicone and release undesirable fumes. By prioritizing non-toxic components, you’re not just protecting your health; you’re also elevating the quality and durability of your DIY silicone keychain.
Equally important is the environment in which you craft. Proper ventilation is a non-negotiable aspect of safe home crafting, particularly when working with materials that may release odors or vapors during mixing and curing. Even with non-toxic silicone, the process can involve compounds that, while safe once cured, are best not inhaled in concentrated forms. Set up your workspace in a well-ventilated area—near an open window, under a kitchen vent, or even outdoors if weather permits. This simple step significantly reduces any potential exposure to airborne particles and ensures you’re breathing easy while you bring your creative visions to life.
Consider this scenario: you’re mixing silicone and adding a custom color to achieve that perfect leather-like hue. Without adequate airflow, the scent of the components might become overwhelming, detracting from the fun and potentially causing headaches or discomfort. By contrast, a breezy, airy space keeps the atmosphere fresh and allows you to focus entirely on the artistry of your project. If working indoors, using a small fan to circulate air can make a noticeable difference. Remember, crafting should feel invigorating, not stifling.
Another practical insight involves personal protective equipment (PPE). While non-toxic silicone is generally safe to handle, wearing disposable gloves can prevent skin contact with uncured material, which might cause mild irritation for those with sensitivities. Safety glasses are also advisable when mixing or pouring, to protect your eyes from accidental splashes. These small precautions seamlessly integrate into your workflow and empower you to craft with confidence.
Moreover, think about the long-term benefits of adopting these safety practices. By establishing a routine that emphasizes non-toxic materials and proper ventilation, you’re not only safeguarding your well-being but also setting a foundation for more ambitious projects. Perhaps today it’s a DIY silicone keychain; tomorrow, it could be custom molds or wearable art. Each safe choice you make builds toward a sustainable and fulfilling crafting habit.
Inspiring creativity goes hand-in-hand with responsibility. As you experiment with textures, colors, and designs for your leather-look silicone keychain, let safety be the silent partner that enables your innovation to flourish. Share your creations proudly, knowing they are crafted with care from start to finish—both in artistry and in well-being. Your home crafting space can become a sanctuary of imagination, where every project is as safe as it is beautiful.
4. Sourcing Quality Craft Supplies: From Pigments to Keychain Rings:** Where to find **Color Pigments**, **Keychain Rings**, **Attachment Clips**, and other **Craft Supplies**
4. Sourcing Quality Craft Supplies: From Pigments to Keychain Rings
Embarking on your DIY silicone keychain journey is an exciting adventure, but the magic truly begins with sourcing the right materials. The quality of your supplies can elevate your creation from a simple trinket to a professional-looking accessory. Whether you’re aiming for vibrant hues, durable hardware, or unique textures, knowing where to find the best components is key. Let’s explore where to source everything from pigments to keychain rings, ensuring your project is both beautiful and built to last.
Color Pigments: The Heart of Your Design
Color is often the first thing that catches the eye, and for silicone keychains, pigments are essential for achieving that custom look. When selecting pigments, opt for those specifically designed for silicone or resin crafts, as they blend smoothly and maintain vibrancy without compromising the material’s integrity. You can find high-quality pigments at specialized online retailers like Amazon, Etsy, or dedicated craft stores such as Blick Art Materials or Michaels. For a more unique palette, consider mica powders, which offer shimmering effects, or liquid dyes for transparent, jewel-like finishes. Brands like Let’s Resin or Art ‘N Glow are popular choices, offering a spectrum of colors to inspire your creativity. Imagine crafting a sunset-inspired keychain with gradients of orange, pink, and gold—these pigments make it possible.
Keychain Rings and Attachment Clips: The Functional Foundation
A keychain isn’t complete without its hardware, and sourcing sturdy rings and clips ensures your creation is both functional and durable. Look for split rings or lobster clasps made from materials like stainless steel or zinc alloy, which resist rust and wear over time. These can be found at craft supply stores such as Joann or Hobby Lobby, or online marketplaces like eBay and AliExpress for bulk purchases at affordable prices. For a touch of elegance, consider decorative options like engraved rings or colored clips, which add personality to your DIY silicone keychain. Remember, the right attachment not only secures your keychain but also complements its design—think of a sleek silver clip for a modern look or a rustic bronze ring for a vintage vibe.
Other Essential Craft Supplies
Beyond pigments and hardware, several other supplies play a crucial role in your crafting process. Silicone molding putty or two-part silicone rubber is the base material for creating your keychain; brands like Smooth-On or Alumilite offer user-friendly options for beginners. Mixing cups, stir sticks, and molds are also vital—silicone molds come in countless shapes, from geometric patterns to custom designs, available on Etsy or specialty sites like The Crafter’s Workshop. Don’t forget release agents to ensure easy demolding, and tools like toothpicks or silicone spatulas for detailed work. For those adding extra flair, glitter, embeds (like dried flowers or beads), and sealants can be sourced from the same retailers, allowing you to personalize every aspect of your creation.
Where to Shop: Balancing Quality and Convenience
When sourcing supplies, balance quality with accessibility. Local craft stores offer the advantage of seeing materials in person, which is great for comparing colors and textures. Online platforms, however, provide a wider selection and often better prices, especially for bulk orders. For eco-conscious crafters, consider sustainable options like biodegradable pigments or recycled metal hardware from retailers specializing in green crafts. Additionally, don’t overlook community resources like craft fairs or online forums, where fellow enthusiasts share tips and sources for rare finds. By exploring these avenues, you’ll not only gather top-notch materials but also connect with a community that fuels your inspiration.
Inspiring Creative Possibilities
Sourcing quality supplies is more than a practical step—it’s an invitation to experiment and innovate. With the right pigments, you can mimic the rich tones of leather or create marbled effects that dazzle the eye. Sturdy rings and clips ensure your keychain withstands daily use, while unique molds let you craft shapes that reflect your personality, from minimalist circles to intricate animals. Imagine gifting a handmade keychain with a friend’s favorite color combo or creating a series for seasonal themes. The possibilities are endless, and by investing in quality materials, you’re setting the stage for creations that are as durable as they are delightful.
In the end, the joy of crafting your own DIY silicone keychain lies in the details—the vibrant pigments, the reliable hardware, and the little touches that make it uniquely yours. So, dive into sourcing with curiosity and confidence, and watch as your vision comes to life, one supply at a time.
Frequently Asked Questions (FAQs)
What are the absolute essential crafting tools I need to start making a DIY silicone keychain?
You can begin with a surprisingly simple kit. The absolute essentials include:
Mixing cups and stir sticks for preparing your silicone.
A digital scale for precise measurements to ensure proper curing.
Your chosen silicone molding material and color pigments.
A pattern template (which you can make from cardstock) and a mold or mold-making supplies.
How do I achieve a realistic leather look with color pigments?
The key is in layering and texture. Start by mixing a base color using brown color pigments. Before the silicone fully sets, you can use a toothpick or a small tool to gently score a texture resembling leather grain. For an authentic aged effect, lightly dab a darker pigment or alcohol ink onto the surface and gently wipe it away, allowing it to settle into the textured grooves.
Is silicone keychain making safe for home crafting?
Yes, when you follow proper safety protocols. Always choose non-toxic components labeled as skin-safe or platinum-cure silicone, which typically have low VOCs. The most critical rule is to work in a well-ventilated area to avoid inhaling any fumes during the mixing and pouring stages. Wearing gloves is also recommended to protect your skin.
Where is the best place to source quality craft supplies like keychain rings and pigments?
Specialized online retailers, craft stores, and e-commerce platforms like Etsy, Amazon, and AliExpress are excellent sources. Look for sellers with high ratings and reviews specifically for craft supplies like keychain rings, attachment clips, and silicone color pigments to ensure you’re getting quality components that will hold up over time.
Can I use any type of silicone for this project, or is a specific silicone hardness required?
Silicone hardness (measured in Shore A) is crucial for the final feel and durability of your DIY silicone keychain. A medium hardness, around Shore A 20-30, is often ideal as it provides a slight flexibility that mimics leather without being too floppy or too rigid. Always check the product specifications before purchasing your silicone molding compound.
How do I create a custom pattern template for a unique shape?
Designing your pattern template is a simple process. Sketch your desired shape on paper or design it digitally. Print it out or trace it onto a sturdy material like cardstock or acetate. Carefully cut out the shape—this negative space becomes your template. You then place it on your mold surface and pour silicone around it or use it to trace onto other mold-making materials.
My silicone didn’t cure properly. What went wrong?
Improper curing is usually due to incorrect ratios of the two-part silicone components. Always measure parts A and B by weight using a digital scale, not by volume, for absolute accuracy. Contamination from other chemicals (like sulfur, which can inhibit platinum-cure silicone) or not mixing the parts thoroughly for the full recommended time can also prevent proper curing.
How durable are homemade silicone keychains?
When made correctly with quality materials, a DIY silicone keychain is extremely durable. They are water-resistant, flexible (resistant to cracking), and can withstand daily wear and tear. The longevity depends on the silicone hardness you choose and the quality of the keychain rings and attachment clips you use to assemble the final product.