I am working on a mold for my boat resulting from a recent failure, although I am unsure of the proper material to use. The part is exposed to automatic transmission fluid. Pressures on the abutting gasket are around 200psi. Part is quite small; diamater of a nickel and about 1" deep.
Last Edit: Aug 5, 2018 13:14:40 GMT -5 by marjorie
Thanks for the response Brian. The part is white plastic. I am currently 4 hours into the 15 minute curing of the silicone caulk the part is sitting inside at the moment. At this rate I should be able to pull the part middle of the week. Will inspect the part closely to look for any markings indicating the material type as soon as the silicone sets.
The parts is still sitting in the silicone from a tube and is very tacky to the touch....ugh. The Youtube video mentioned 15 minutes. Ordered some proper mold making material. The only thing I can see with one side sticking out is a "1".
UPDATE: Decided it would be easier to remove the part from the silicone now and clean it off.
Post by carol - Alumilite Corp on Aug 9, 2018 9:23:27 GMT -5
I think that would be wise at this point to get a different silicone mold making material. There are Hobby Stores around you locally perhaps that carry the silicone where you could get it today. Please make sure your part is good and cleaned off!!! Remember silicone will bond to another silicone so any residue of silicone on your master could have your mold making material adhere to it, leaving you with a mold that may not produce and nice smooth finish for your replicas.
Please call if you like and I can see if we have anyone local to you so you can purchase it possibly today!