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View Full Version : How to get silicon off the gelcoat?


jbrooks86
03-18-2007, 11:35 PM
In the process of reinstalling the strut and there is silicon on the bottom of the boat that looks to be from day one. I tried scaping it off with a plastic puddy knife and got the big stuff, but was curious if anyone had been through this and had good way to get the rest of it and the residue? Thanks

bigmac
03-18-2007, 11:55 PM
In the process of reinstalling the strut and there is silicon on the bottom of the boat that looks to be from day one. I tried scaping it off with a plastic puddy knife and got the big stuff, but was curious if anyone had been through this and had good way to get the rest of it and the residue? Thanks

Solvents won't do it..it's going to take a sharp metal tool. I'd recommend a gouge or a router. X-Acto makes the appropriate blades, or you'd likely find the appropriate tool at a woodworking store.

X-Acto set (http://www.artstuff.net/xacto_woodcarving_knife_sets.htm)...the 3/8 U-gouge tends to work well for this kind of thing...

http://www.artstuff.net/images/xacto%20basic%20woodcarving%20set.gif


Or individual router blades (http://www.artstuff.net/xacto_router_blades.htm)...
http://www.artstuff.net/images/x160.jpghttp://www.artstuff.net/images/x162.jpg

jbrooks86
03-19-2007, 12:02 AM
Thanks Bigmac,

I guess this will be a bit of work to do without gouging the gel on bottom. Any tips other that go slow and careful?

the legend
03-19-2007, 12:17 AM
use a razor blade to get it off, choose the angle of the blade wisely when doing this. Acetone will do the rest with some elbow grease and a saturated rag (acetone)

the legend
03-19-2007, 12:17 AM
it does work, for about ten years now

JimN
03-19-2007, 12:35 AM
Denatured alcohol removes silicone, too.

bigmac
03-19-2007, 07:48 AM
Thanks Bigmac,

I guess this will be a bit of work to do without gouging the gel on bottom. Any tips other that go slow and careful?
The only time I've ever had to do this was after re-sealing the rub rail on my Boston Whaler. I used the small router circle. The routers are broad and flat and can lay against the gelcoat without any of the sharp parts touching it. Once you get it down to a relatively thin film, acetone will work and won't hurt your gelcoat. Or you might also try 3M Adhesive Remover, which you ought to be able to get at most auto parts stores. But you're going to need to get the big globs of the stuff off first and that's going to take something sharp.

jbrooks86
03-19-2007, 11:17 AM
Got it! Thanks guys.