SoCal Jet Boats

Tech Talk => Gelcoat / Paint / Fireberglass Repair => Topic started by: onetool1 on June 08, 2009, 09:19:59 PM

Title: "Crackled" ? fiberglass
Post by: onetool1 on June 08, 2009, 09:19:59 PM
I have been sanding  :P in order to get a nice coat of paint on it and this is what I have run across  ??? it is located on the bough near where the windshield would be on a 72 spectra. Is this repairable? If so how do I go about it.

Thanks in advance for your time
Randy

Its a boat not rice crispies

(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fwww.acme13.com%2Fcrackle.jpg&hash=00c93d25f49b260d07af102ddfbfa81a5330fc21)
Title: Re: "Crackled" ? fiberglass
Post by: GT Jets on June 08, 2009, 09:41:48 PM
You have shrinkage ;D

IMHO you need to get familiar with a grinder to get to some good glass, that will not cover worth a damn. Use some finishing cloth once you have found the good, uncracked fiberglass, then build it back up with cloth and glass (not Bondo). If you get to blocking and using a grater to get it flat while still somewhat soft will save you some time (being that that area looks flat).

I don't know how large that area is, but you may want to have a look see underneath to make sure thee are no issues from below....

the gelcoat shattered and may start to pop off if the damage is under the gel.

Really not difficult, just time consuming...I would think you have about a day of prep there...

Good luck

GT

BTW, welcome to the site ;)
Title: Re: "Crackled" ? fiberglass
Post by: onetool1 on June 09, 2009, 11:37:37 AM
I really appreciate it GT, I am continuing my sanding efforts to see how much of this shrinkage I have to look forward to.

Thanks for the welcome as well.
I am really digging this site. There seems to be alot of cool and helpful people here.

This is my first boat and still have alot to learn. I am looking forward to being able to contribute where I can.

Thanks again
Randy
Title: Re: "Crackled" ? fiberglass
Post by: CHROMEY on June 09, 2009, 05:17:24 PM
welcome aboard.....it does look pretty bad!...what grit were you sanding in the pictures?? just curious...cause its going to take a lot sanding to get below that..
Title: Re: "Crackled" ? fiberglass
Post by: IRRebel on June 11, 2009, 01:19:31 AM
Doesn't look too bad, but Glenn's right, the gelcoat looks to be all that is cracked to me. Probably a very neglected boat left out in the open and never waxed, etc.

A LOT of sanding to get through the gel coat, then a lot of resin and glass fibers (Pull apart some mat) to get it all level again so it don't look like a washboard once you paint it. (See, I'm learning guys!).

If it's flat, yeah use a 2x4 wrapped in sandpaper (I suggest at least 18" long and use random angles) to block it out. If it isn't flat (And I've yet to find a flat surface on a boat), gonna take a lot of touch and feel. I used to just use just my hand on cars years ago on curved surfaces, then rattle can on some cheap, fast dry high gloss paint and see where I needed to smooth it some more, then circle those areas with a Sharpie. Usually took a couple hours on say a quarter panel to get it perfect.

Hope this helps, some, but nows the time to get it right. Proper prep and sanding are 98% of any paint job.

The Moo, while looks cool, is gonna get a complete, proper, redo this winter (In the same scheme, I gotta), but wasn't done right. Can still see the outline of the original striping scheme when in the garage under the fluorescent lights at certain angles. In daylight, looks perfect. I'm picky.

Ray
Title: Re: "Crackled" ? fiberglass
Post by: jet boat performance on June 11, 2009, 07:34:07 AM
Randy as the elements take the toll thats common on a lot of boats  ,  as said a lot of grinding and filling , call my friend John Miller  www.johnmillerboats.com , very knowledgable in restos of this type , he's sure to be of help to you Tom
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