First plug. 4th attempt. Need mold help please.

[gofastsandman]

Nice drink holder! Gel must be catalyzed at least 10cc per qt. and fully cured before you skin it or apply a second coat..

It`s a sushi delivery system for Buster.

Thanks Don! Have you used the spray silicone? I`m going to experiment on gel test spots with more coats now.

Cheers,
GFS

[hermco]

Never used spray silicone. Honey wax is good and I use a liquid semi permanent wax system on my molds. Doing tests is a good idea.

[DonV]

Doing tests is a good idea

Hummm......that's a rather interesting concept GFS.

[gofastsandman]

Hummm......that's a rather interesting concept GFS.

Friday morning quarterback.

Not knowing how to swim didn`t stop me from jumping in the deep end of the pool as a young child.

I got my advice from a greatly respected builder and Charlie, who is the man at Glue Products these many years.

Anybody know a good divorce atty. Shoulda` gotten married on SeaCraft Island......%#&*%$.

&%^$#,
GFS

[fg1]

Skip the silicone! Clean it all off and start over with a mold release wax or PVA, but not both. Why 2 coats of tooling gel? One should be enough, you should have 24 mils, cured - that's about the thickness of 2 business cards. But if you have to have 2 coats, wait 5 hours between coats. And be absolutely certain you're using unwaxed gel coat. You shouldn't be having so much trouble.

[gofastsandman]

Skip the silicone! Clean it all off and start over with a mold release wax or PVA, but not both. Why 2 coats of tooling gel? One should be enough, you should have 24 mils, cured - that's about the thickness of 2 business cards. But if you have to have 2 coats, wait 5 hours between coats. And be absolutely certain you're using unwaxed gel coat. You shouldn't be having so much trouble.

So true.
Thanks Dan. I had to break the mold all the way down.
I used unwaxed gel coat. Here`s where I am now...again.





I put the pieces together with 2 part epoxy after scuffing w 60 grit and wiping w acetone. I then faired with patching plaster, not joint compound which has a lot of vinyl in it.

I then painted it with the primer and clear. Wet sanded and buffed w/ perfect it. Clean w/ alcohol, washed w/ soap, then the silicone, gel, and the dreaded second coat of gel. There were areas on the granite which had only one coat of gel and it fell right off. Not so much on the rest. I brushed the gel on and it`s a challenge to get even thickness with no low spots. The boat builder said go w/ 2 and make the second coat hot. I think it would have been fine, IF I had let it gas out properly on the first coat.

I want to get back after it ,but now it`s too cool.

Still %#$@&,
GFS


Sam,
Need more cheerful pics please.

I know the plaster and paint sounds weird, but it worked well.

[fg1]

With the depressions in your part and the high shrinkage of curing polyesters, I think the silicone is too slippery. Even if the first coat of gel is cured enough, the second coat may pull the first coat up when it shrinks (alligatorring). And your part will likely pre-release, leaving voids. Do yourself a big favor and use a normal mold release wax. Any possibility of spraying the gel coat? When you brush gel over some release agents, they can "drag" the release agent into the gel coat, causing trouble later.

[gofastsandman]

With the depressions in your part and the high shrinkage of curing polyesters, I think the silicone is too slippery. Even if the first coat of gel is cured enough, the second coat may pull the first coat up when it shrinks (alligatorring). And your part will likely pre-release, leaving voids. Do yourself a big favor and use a normal mold release wax. Any possibility of spraying the gel coat? When you brush gel over some release agents, they can "drag" the release agent into the gel coat, causing trouble later.

I wondered about pulling with a brush. After your first post, I was going with wax, but I appreciate the extra push. My forehead is flat enough right now. Would you like to shoot it on a Friday so I can watch. Your work on the 21 was restaurant quality!

Thanks all!
GFS
655-5080

[NoBones]

Friday morning quarterback.

Not knowing how to swim didn`t stop me from jumping in the deep end of the pool as a young child.

GFS

I recall freezing water at Ft. Desoto did not detour you..




Lookin' good Sandy.

See ya, Ken

[gofastsandman]

I recall freezing water at Ft. Desoto did not detour you..




Lookin' good Sandy.

See ya, Ken

I recently got a floating prop wrench.

I may have to bring more termites up north to finish off the 27 for good.

On my first skiing trip , family friends loaned my a pair of the black Head standard skis because they " couldn`t be broken". Hmph, childs play I tell ya, childs play.

Proud member of the over 150 stitches club,
GFS