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rob935
01-07-2010, 01:22 PM
i have a 93 prostar with a green hull which has faded quite badly , just seen some posts recently which mentioned sanding or wet sanding the hull , what is involved in this process and is it effective ??

FrankSchwab
01-07-2010, 02:50 PM
I restored the finish on my boat last winter. The stern had gotten heavily faded and the dark green was nearly white.

I simply used an circular polisher (http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=92623), some Moderate Gel-coat oxidation remover (http://marinerv.meguiars.com/product/Gel-Coat-Clean/Heavy-Duty-Oxidation-Remover), a lighter polish (http://marinerv.meguiars.com/product/Gel-Coat-Clean/Color-Restorer), and some good fiberglass protectant, and it shone good as new. Took most of a day to do the whole boat.

I'd give the oxidation remover a try before going at it with sandpaper. There are plenty of good threads on here; search for "oxidation", or perhaps "porter cable".

/frank

kiteklan
01-07-2010, 04:15 PM
We did the same with wet sand paper #3000 (with worn out ones which are used).After that hard paste with hand and soft paste with circular polisher.I will recommend to try first the hard paste on a smalll area if you get good result with that,you may not need #3000.
You should be very carefull not to work to long on one spot otherwise you may worn it out.

Check the result.
http://www.mastercraft.com/teamtalk/showthread.php?t=33716

Better to find a friend who is familier with these products otherwise I would do what FrankSchwab recommends and use commercial products.I think there is less risk of destroying the jel coat with those products.

http://www.mastercraft.com/teamtalk/showthread.php?t=33716

Skipper
01-17-2010, 07:29 PM
Wet sanding is usually the last resort. My youngest bought an old SeaDoo that was yellow on bottom. The yellow was horribly faded. I was able to bring it back to life with "Finnesse it III" by 3M at 3500rpms with a sheepskin wheel. One advantage to buffing is that you can do limited buffing one or near stickers. Wet sanding you must mask off the stickers.

I say start with buffing. IF it does not give you the results you want, then try wet sanding. Just remember there is a natural order to things. From wet sanding at the highest grit to successively lower abrasive compounds until you finally get to a very fine polishing compound.

Rotsa wuck.