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andersonmc 09-18-2013 12:05 PM

wet sanding question
So I have my boat winterized and all disasembled for my big winter project. I'm planning on wet sanding the complete boat inside and out. My question is which paper to start with. At the beginning of the season I used 3m Imperial compound with my Makita and had good results except for the upper rail. Its hard for me to really get the buffer in between the lip above the rail. My boat is all white with a black stripe. Should I start with a 1500 and work down if it dosn't cut it? And what tricks do you do to get in the tight spots with the rotary?

My rear transom is a different story its definately going to need a good wet sand since I buffed on it for a very long time and still couldn't get it real shiny. I think I'll start with a 1000 grit and work up from their. I plan on going 1000 1200 1500 2000? Is that good? Then plan on 3m imperial and then polish with Finesse it.

I wet sanded my fenders last night as a test. My big question is how much preasure do I apply and for how long? I saw a decent amount of white gel coming off. I had medium preasure on paper and went in different directions each grit. The last thing I want to do is take too much gel off and damage it. I realize you always start out with the most least aggressive application but any other tips would really help. Thanks

billr 09-18-2013 02:23 PM

I started with 1000, then 2000 with good results.

maxpower220 09-18-2013 03:04 PM

Are you sure that you need to wet sand everything. It takes a lot of time. A "good" heavy compound will take down a lot of oxidation and marking. Probably as important is to get a few good pads. I recently did my boat and the pad were @ $28 a piece, but there were noticeably better than the pads that came with the polisher.

If you do need to wet sand, start with the least abrasive that you can and work down if you need more. I would start at 1500, if you need to wet sand. Also, buy plenty of it because those fine grits clog quickly.

H2ORidr 09-18-2013 03:31 PM

Ditto what Maxpower220 said. Getting the right polisher and pad can make a HUGE difference. I work near the polishing and finishing group and they use nothing larger than 3" pads on good quality industrial polishers. They use three (or more) different pads. One is a "heavy" cut, one is "medium" and one is a polishing pad.

Here is a video that we pass around at work because the guy knows his stuff.

andersonmc 09-18-2013 04:59 PM

What pads do you guys suggest? I feel mine has worn out and is not as effective.

MC25 09-18-2013 05:03 PM

post some pics of your boat to see if it truly needs to be wetsanded.

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