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mustangboiler
02-20-2012, 11:53 AM
I just purchased a 91 Prostar 190 and it has some damange to the fiberglass. Nothing extreme, just some chips. Was wondering what the best way to go about fixing that and what is the best product out there.

Thanks

mikeg205
02-20-2012, 12:23 PM
Fiberglass work or gel coat work? I used http://www.overtons.com/modperl/product/details.cgi?pdesc=White-Gel-Coat-With-Wax-Quart&i=81446&str=gel+coat&merchID=4005... but it was for a small repair. Another good resource... I was able to add more hardner to thin the gel coat and shoot thru an air brush with a fat nozzle. Good thing about gel - it dries the same color as when its wet so if you can match color before adding hardener.

http://www.jamestowndistributors.com has a bunch of supplies too.

Jerseydave
02-20-2012, 07:42 PM
Ok, no more tips or advice for you until you post some pics of your prostar my friend! :D

Oh yeah, welcome to teamtalk! :cool:

east tx skier
02-21-2012, 10:06 AM
Where are you located? If it's a major repair, maybe someone can recommend a good shop near you.

Welcome!

mustangboiler
02-23-2012, 11:48 AM
Mgorczak, Its going to need both. Thanks for the sites, I will look into it.

JerseryDave, thats for the warm welcoming. I posted a picture of it!

I am in Indianapolis so if anyone knows of someone, that would be great.

mustangboiler
02-23-2012, 11:50 AM
here it is!

rjracin240
02-23-2012, 12:02 PM
Very nice boat!

mustangboiler
02-23-2012, 12:04 PM
Thanks....just have to patch up a fiberglass spot and reupholster the back seat and itll be perfect. Got it for a steal too!

mikeg205
02-23-2012, 12:40 PM
here it is!

where's damage pic?

mustangboiler
02-23-2012, 03:40 PM
here is the damage i am looking to repair.

mikeg205
02-23-2012, 05:42 PM
Has the glass been compromised or just the gelcoat?

TRBenj
02-24-2012, 08:02 AM
Can you get to the back side of that area? Cleaning it up and reinforcing it with a few layers of glass would improve your chances of preventing cracks in the repaired gel.

east tx skier
02-24-2012, 09:29 AM
I think he might be able to get to the back side of that area without removing the gas tank. But it'll be a tight squeeze.

mikeg205
02-24-2012, 09:53 AM
my .02....

reinforce the glass... fix the gel yourself... match as good as you can and get a great decal to cover it.

wrobins1
02-24-2012, 09:58 AM
Fiberglass work or gel coat work? I used http://www.overtons.com/modperl/product/details.cgi?pdesc=White-Gel-Coat-With-Wax-Quart&i=81446&str=gel+coat&merchID=4005... but it was for a small repair. Another good resource... I was able to add more hardner to thin the gel coat and shoot thru an air brush with a fat nozzle. Good thing about gel - it dries the same color as when its wet so if you can match color before adding hardener.

http://www.jamestowndistributors.com has a bunch of supplies too.

What is the advantage of the "wax" in the overtons gel coat?

mikeg205
02-24-2012, 10:12 AM
What is the advantage of the "wax" in the overtons gel coat?

It's one of the ingredients needed for application...its not wax like your thinking when polishing your boat or car. If you buy gel without wax you have to add it. The wax helps it harden. you can get without wax then it has to be covered with wax to cure.

I'm a big do-it-your-selfer - so this was the easiest to use. I did not even modify color since gouge was only 1/8 thick. You can also order colorants. Good thing about gel you can match the color before you add the MEKP. Gel cures the same color wet as dry.

You'll need to grind out all the radiating cracks - a dremel tools will do.


My gel repair was a gouge in the hull which I got from the trailer, my gaff, had the trailer a tad too deep. The repair is 2 seasons old, sat in water for a week...still looking great.

mustangboiler
02-24-2012, 02:34 PM
You'll need to grind out all the radiating cracks - a dremel tools will do.


you're referring to the spider cracks around it?

Tomi
02-24-2012, 04:25 PM
If it is anything like mine, you will find that the structure is sandwiched so that you will end up having to remove a lot more than what it looks like. But still no brainer. Remove glass, repair, fill, sand and gelcoat. Simple to do.

You may wish to get the gelcoat color right. Spectrum is so expensive that I would not pay for it. Get good quality gelcoat and sand lightly before choosing the color to remove any gloss and other color distortions to get the actual color right. I ended up buying two different whites and mixed until the color was right.

mikeg205
02-24-2012, 04:37 PM
You'll need to grind out all the radiating cracks - a dremel tools will do.


you're referring to the spider cracks around it?

yes...that's what I am referring to.

On the gel coat tape off everything that you don't want new gel on... I was able to cut the gel with MEKP more to shoot thru an air brush.

mikeg205
02-24-2012, 04:41 PM
23 bucks for teeny bottle... I should have opened a little gel coat store at sell for 20...

http://www.iboats.com/Mastercraft-Gel-Coat/dm/cart_id.673459453--session_id.125166486--view_id.823549

Jeff d
02-24-2012, 05:25 PM
23 bucks for teeny bottle... I should have opened a little gel coat store at sell for 20...

http://www.iboats.com/Mastercraft-Gel-Coat/dm/cart_id.673459453--session_id.125166486--view_id.823549

This might be a stupid question but how do you know what the name of the color of your gel is? Do you have to contact MC with the HIN? Mine's an off white, black and tan '00 Maristar 230. I'm looking for the off white gel.

Tomi
02-25-2012, 01:36 AM
You can get the color names from a dealer who presumably checks it from MC. Anyway these MC gelcoats to my understanding are made by Spectrum (http://www.spectrumcolor.com/ProductDesc.aspx?code=F503902Q&type=4&eq=&desc=F503902Q&key=it). But their price is about $105 per quart when at least I paid for my top grade marine gelcoat less than $20 per quart. RAL colors are available but matching can be a pain if trying for exact match like I did. I ended up having to buy 2 and mix. Glacier white was the white on my boat. I used 4 parts of RAL 9010 + 1 part RAL 9003. I may be wrong but I think that pretty much gives the same color as RAL9016 (Traffic White). It was a perfect color match.

Spectrum also had some $100 handling fee but that could be only since I needed international shipping. The international shipping would have been $120 on top of that so for me this was easy decision :D

mikeg205
02-25-2012, 11:14 AM
This might be a stupid question but how do you know what the name of the color of your gel is? Do you have to contact MC with the HIN? Mine's an off white, black and tan '00 Maristar 230. I'm looking for the off white gel.

You also might be abel to email mastercraft directly with the Hull ID. They are very helpful. They made new trailer sticker for me - for free - great to work with. The little bottle are for small repairs. You'll need to work with a larger quantity so it will take a bit more work. It takes years of experience to get paint and gel to match perfect - especially in different light conditions. My advice is - fix it - get close in color and go have fun!

mustangboiler
02-25-2012, 01:37 PM
ok, after doing some research i am going to fix this myself. if anyone has any advice (what gelcoat to buy, tips/tricks, etc..) i would appreciate it.....


Come on warm weather!

mikeg205
02-25-2012, 01:51 PM
Here's the pigments

http://www.jamestowndistributors.com/userportal/show_product.do?pid=2078

I would used the gel coat with wax...

Here's something that might get close to color..

http://www.jamestowndistributors.com/userportal/show_product.do?pid=1522&familyName=Colored+Air+Dry+Gelcoats or get white and match it yourself.

First you'll need to remove all the damage... I am sure you wont be able to get the fuel filler hose off so order one from www.skidim.com

http://www.autogeek.net/ has all sorts of buffers and polishers to do the removing of bad gel.


The first thing I would do is remove (drain first of course) the gas tank and remove. then you could see what's going on underneath. Then decide how much of the are you are going to fix - This should be a 2 weekend project - IMHO.

I fixed the gouge in my hull in a weekend. Spent more time cleaning up my tools.

Take pictures... along the way before and after...

Good luck...