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Careful measuring is the starting point for successful silicone eraser moulds. Mixing in the correct proportions ensures the silicone sets as expected and your crafted erasers hold perfect detail and durability.
Why Precision Matters in Silicone Mixing
Silicone rubbers, such as “Pure Mould”, are typically mixed in specific ratios, often 1:1 by weight or volume. If these ratios are imprecise, you may encounter issues like incomplete curing, excess stickiness, or moulds that don’t release easily. Especially for small, intricate eraser designs, accurate measurement translates directly to a smooth demoulding process and long-lasting results.
Top Tips for Accurate Measuring
- Use Digital Scales: Measure both components using a reliable digital scale with fine gradations. This is essential for liquid silicones and two-part putties.
- Level Surfaces: Always set mixing containers on a stable, flat surface before weighing or measuring.
- Follow Instructions: Consult your product’s directions—some silicones are mixed by weight, others by volume. Never substitute or estimate.
- Pour Slowly: Add each part gradually to avoid overshooting the ratio. If you over-pour, it’s best to start again rather than attempt to fix the ratio after mixing has begun.
When This Matters Most
Measuring accurately is especially vital for projects with fine detail or for beginners just discovering silicone moulding. Errors at the measuring stage can waste both material and time, and may mean your erasers don’t form properly.
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Taking time to measure with precision not only saves you trouble but helps you create eraser moulds that truly shine. For more guidance on making erasers using silicone, visit our main How to Make Erasers Using Silicone page.