1973 20 SF changes/improvements and a question - Page 2

Blue197320 · #1 11-28-2006, 05:52 PM

im using polyester resin. i got some micro balloons to make a fairing compound. workin out good so far. my sander crapped out.

would a strait line sander be the best choice? was going to get a belt sander with a fine belt and take down the rough stuff and finish with a 1/3 sheet sander. i will keep up with the pics.

Blue197320 · #2 12-05-2006, 10:30 PM

i have made some progress since last post. these were the hardest holes ive ever drilled (3/4").

then i filled it in with resin.

and drilled it out to 9/16" to keep a barrier around that wood.

i have to plug my bilge thru hull for some previous owner rigs.

now they are on.

that gives me a bone.. looks very sexy. i like to see things come together. now im going to let the 5200 dry and cut it with a razor blade and scrape the drips off.

any comments guys??

Blue197320 · #3 12-27-2006, 06:29 PM

how comes i keep getting lillte "pin" holes in the microballoon/resin mixture i used for fairing compound? what do i do to fix it? its driving me nuts!

Bryan A. · #4 12-27-2006, 06:41 PM

It's from the air in the mixture. You could try mixing slower although I have found that doesn't help much. Or use a high build primer after the fairing is complete. I'm sure others will chime in with recomendations.
You could also use a premade fairing compound. I have seen others use Quik Fair by System three, it is packed under a vacuum so no bubbles, but I have not used it myself so I do not have first hand experience.

Hope that helps, Good Luck. Pin holes suck.

Bryan A. · #5 12-27-2006, 06:44 PM

I have also rolled on a thin coat of epoxy on after the fairing is done to fill some of the pinholes but is a bitch to sand afterwards, wetsanding a must. Heat from a gun will also burst some of the bubbles. It works OK on small parts but for a large area I would go the surfacing primer route.

Blue197320 · #6 12-27-2006, 07:36 PM

bryan,
thanks for the reply. i am going to try to high build primer method first because thats the stage of the rebuild im in. thanks again..

strick · #7 12-28-2006, 12:48 AM

I think you need to add more filler and less microballoons to the mixture. You may have to put several coats of sanding primer over it to get rid of the pin holes. System 3 quick fair is the only way to go in my opinion. Once you have tried it you wont want to use anything else. It dries fast and is as smooth as butter.

strick