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casting parts

 
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oldtimer



Joined: 04 Feb 2018
Posts: 3

PostPosted: Sun May 27, 2018 1:34 pm    Post subject: casting parts Reply with quote

I've been using smooth-on silicone to make molds for casting hard to find small parts...

does anyone do casting and what do you use...thanks
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octopusmotor



Joined: 19 Mar 2018
Posts: 20

PostPosted: Sun May 27, 2018 7:23 pm    Post subject: Reply with quote

Smooth-On OOMOO 25 rubber and Smooth-Cast 300 resin are what I use. The "trial size" packages of each are sufficient for what I do, mostly smaller parts I cast every so often. I've used the stuff for over a decade and it's never let me down.

Jodie Peeler
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oldtimer



Joined: 04 Feb 2018
Posts: 3

PostPosted: Sun May 27, 2018 8:38 pm    Post subject: Reply with quote

that's what I've been using but the part b dries out,I live in upstate ny so I can't use it because of the temp
I try and store it the best I can but nothing has worked,any suggestions...

the other thing,I like use 1:1 silicone,much easier for me...
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joe b



Joined: 31 Jan 2018
Posts: 44

PostPosted: Tue Jul 31, 2018 11:00 am    Post subject: Reply with quote

oldtimer wrote:
that's what I've been using but the part b dries out,I live in upstate ny so I can't use it because of the temp
I try and store it the best I can but nothing has worked,any suggestions...

the other thing,I like use 1:1 silicone,much easier for me...


hey oldtimer. i live in north nj. i have the same trouble with the two part mold rubber. i called smooth-on and was told there is nothing to do with temp or humidity. the part b has a very short shelf life having to do with it's chemical makeup. you need to use it right away. 60- 90 daye or so. i have like three containers of the part a blue that are still good. i asked smooth on if the sold the part b separately. they said no.

what 1:1 silicone do you use and for what? the mold or the part

joe
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