How Custom RTV-2 Silicone Molds Are Made
RTV-2 is the two-part A/B pour after CAD lock: pattern, often a flip, production master, then batch RTV. Mix, vacuum, witness dump. MOQ 20.
Read article -Custom silicone development · RTV mold MOQ from 20 · DFM & prototype support
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A broad DFM guide covering release, undercuts, splits, detail, multi-cavity layout, material selection and prototype validation.
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One-piece vs two-part · Undercuts and split molds · DFM review
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RFQ guide · Low MOQ · Custom vs off-the-shelf · Manufacturer
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RTV-2 is the two-part A/B pour after CAD lock: pattern, often a flip, production master, then batch RTV. Mix, vacuum, witness dump. MOQ 20.
Read article -An SLA print can be an RTV master after wash, UV, and a seal. How inhibition shows up, when the $50 CAD applies, and what to send before we pour platinum.
Read article -Platinum vs tin RTV for resin, craft, wax, and concrete molds: odor, recast life, SLA inhibition, and when tin is the wrong drum. Mix, shrink, MOQ 20.
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For complex resin, run Mold Structure Decision before picking Shore 10A or 30A. Soft peel vs split, plug, or core. Prototype 3–7 days after CAD lock.
Read article -Compensate platinum RTV shrink on the master, typically 0.1–0.3%, then coupon the dump. Do not paste LSR 2–3% onto an RTV cavity. MOQ 20 per design.
Read article -Color in the food is pigment bleed or wash film, not a food-grade color. Platinum path, 21 CFR 177.2600 on the article, and what to send for a recast.
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Shore A is not tear strength. Soft 10A–20A skins with a stiff jacket often outlast a hard cavity. When we would not raise durometer to stop tears.
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STEP, STL, scaled photos, or a physical sample: which file actually prices an RTV mold. Units, pour, grams, split. Simple 3D is $50 when CAD applies.
Read article -A photo without a millimetre datum freezes the wrong size into every cavity. Why we model at $50 when CAD applies before rubber. Support the photos page.
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DFM on an RTV mold is the split, draft, and jacket call before anyone mixes A/B. What we mark, what CAD lock means, and the files that start the 3–7 day
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