No you don't ,........however, I would strongly suggest 16-24 grit to get the proper "tooth" to adhere to. Remember, DO NOT wipe the surface with any chemical after grinding!! You can blow, brush, or dry wipe. Any chemicals will disolve the fiberous resin hairs and fold over.

Just a couple basics to "try to follow" and have fun!!! :up:

The Dewalt is my favorite with 16 grit. Not much dust. Chunks fly!! :mrgreen:

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Thanks Ron, that's what's so good bout this forum,someone always looking out for the other guy. I did read that somewhere before but forgot all about it till you said something. Quick question about your viper, did you have to grind all the way through the gel coat to clean Fiberglas before you laid your glass to the hull?

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Looking good there. :up: Nice clean work!!!

One thing I noticed that might help. "prime" the wood with resin and let dry before you glass to it. If not, the wood will soak in the resin and pull it away from the fiberglass. You will know this is happening if you see white spots appear after it dries. This also applies to the Balsa. (seals the end grain)
I actually add a "splash" of acetone to allow it to penetrate the wood deeper. You can double the hardner for this part if you want.
Keep the pictures coming. We ALL like pictures. :mrgreen:

Thanks Bill, hope to get some more work done on it as soon as I get back home

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Looks good. You're getting there. Bill :up:

Yes just a light grind to get the fibers on the top.

A question to anyone who has done more glass work than me. Do I need to grind the glass that I already have already laid before I glass anymore, since the last time I worked on it was in August. Patrick

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[quote="YDOC462"]Looking good man!
[/quote]

Yep I agree :up:

Looking good man!

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I made some more progress today, didnt get much done yesterday, had to bring my children to the Circus. Started off by dry tabbing in the inside of the stringers, then dry fitted the core,bedded them in and sealed them up.

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filled all voids around transom with cab-o-sil

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tabbed transom

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Pictures are out of order :thinking: