Uploaded by brickintheyard on Jul 16, 2009
Here's a quick quide to making brush on molds with 74-30 urethane rubber. 7430 is a great general purpose rubber that is great for casting plaster, wax, or Gel-10 silicone. You can thicken 74-30 rubber with Cab-o-sil or PolyFiber for brush-on mold applications.
These molds were made over TexClay positives. Texclay is a meltable clay that may be poured directly into alginate to produce a sculptable positive.
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@Eidejak 6-8 lbs.
brickintheyard 9 months ago
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How many pounds would you estimate it would take to make a half inch thick clay cast of the head and shoulders? Thank you for the videos, they have been really helpful.
Eidejak 9 months ago
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@peaceINDIAnPAK These head molds took about 3-4 lbs of rubber each. Our store is in Dallas Tx.
brickintheyard 10 months ago
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how much would that weigh? and where is ur store?
peaceINDIAnPAK 10 months ago
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Hi bity! LOVE your products! just wondering: I want to make a 2 piece mold with 74-30, what would I use as a separator?
artnouveauiswar 6 months ago
@artnouveauiswar Thanks! Use 2300 Spray Release.
brickintheyard 6 months ago
the poly 74/75 x catalyst is not on your online store and how much would it cost to order it if you have it
melissa19947 7 months ago
@melissa19947 It is ~$14 for a 4oz bottle. Call our store to order it. There is a lot of stuff that we carry in our physical store that is not available online.
brickintheyard 7 months ago
how do you release nsp chavant clay from 74 30
melissa19947 8 months ago
@melissa19947 A light spray of 2300 mold release.
brickintheyard 8 months ago