Silicone question?

[SgtFang]

Does any one know if GI-1000 will bond with silicone caulk from a hardware store? I've got a mold I really need to finish ASAP, but I'm trying not to spend any more than I have to.

Thanks!

-Sarge

 

[TK648]

Does any one know if GI-1000 will bond with silicone caulk from a hardware store? I've got a mold I really need to finish ASAP, but I'm trying not to spend any more than I have to.

Thanks!

-Sarge

If you do not want it to bond to the gi1000 apply a thin film of vaseline
over the area you do not want the silicone caulk to stick too.
I remember reading some where that you can thin vaseline down with acetone

Andrew

 

[robstyle]

you can also thin vasaline down with a simple hair dryer to liquid form. Just open the lid and point the heat in the jar. Works the same with vasaline after its been applied but remember, once you apply it, youll only melt it smooth. Use too much and youll be wiping it off and showering alone afterwards.

 

[Rhett J Martin]

Giggity . . .

 

[SgtFang]

Oh! Actually, I need it "TO" stick together! :lol I got in a hurry making the first post, and forgot to explain the situation. :$

I ran out of catalyst for the silicone while building up the face mold for Vader, and I was wondering if the hardware silicone would bond with the GI-1000 so I could slather it on nice and thick w/o having to order more GI-1000.

Thanks!

-Sarge

 

[Mutant-Enemy]

It's alway's been my experience that store bought silicone "caulking" dries best in thin layers so that if you pile up a bunch of it at one time, the surface will dry but not the inside.
I've never had any trouble getting silicone to stick to silicone though.
As always I'd suggest doing a small test area before really committing to it though.

 

[Zero Cool]

While I haven't specifically tried to bond silicone caulking to GI-1000, I do work with with GI-1000 all the time. My advice would be to order more GI-1000 catalyst and finish the mold properly, although they may bond, im doubtful it would be a strong bond and could lead it to delaminate from the GI-1000 later, as well as taking days to fully cure. Silicone caulking also tends to shrink a lot after curing which could distort future castings and is not the same durometer as GI-1000.

The money you spend to finish the mold the proper way, will most likely save you time, money and the headache/heartache of poor quality casts coming out later.

 

[Mutant-Enemy]

That is a great point. Do it right the first time and you wont be sorry.
I completely spaced on that point of store bought caulking having shrinkage...you definately don't want that!

 

[swgeek]

That is a great point. Do it right the first time and you wont be sorry.

And on a side note,
if anyone wants to thin Vaseline just mix it with baby oil.