seeking a high gloss shine |
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Swatkinz
Platinum Member Joined: December-03-2003 Location: Lexington, SC Status: Offline Points: 1307 |
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Posted: March-16-2013 at 6:37pm |
Hey guys,
I've spent the day working on my gelcoat. Arms feel like jelly. Decided to replace my decals and when I pulled off the old ones, there was significant oxidation "ghosting" in the gel. Rubbing compound wouldn't even make a dent in removing it so I started wetsanding. So far, I've made a pass with 600, 1000, 1500, 2000 and 3000 grit paper. I then applied a West Marine marine polish (by hand). While the gel is free of oxidation and the ghosting is 99% gone (good enough for me), the gel still duller than I'd like. I want the gel to pop. Really want a mirror finish. Other wetsanding threads reference the 3M products and some mention an orbital buffer. Are the 3M products that much better? Is the buffer a necessity to getting the shine I want? |
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Steve
2011 Sport/Air 200 Excalibur 343 2017 Boatmate Tandem Axle Trailer Former CC owner (77, 80, 95, 88, all SNs) Former Malibu owner (07, 09) |
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SNobsessed
Grand Poobah Joined: October-21-2007 Location: IA Status: Offline Points: 7102 |
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I would use a rotary buffer. The surface speed is what creates the heat to make the polish work. the orbital doesn't move fast enough.
I use a wool pad, mainly because i have about 4 of them. Others prefer a foam pad. |
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“Beer is proof that God loves us and wants us to be happy.”
Ben Franklin |
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Gary S
Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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Some 3M products recommend the foam pad and since I didn't have any at all I got their waffle pads.
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tbeard
Senior Member Joined: April-26-2012 Location: Fort Worth TX Status: Offline Points: 379 |
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I just went through the process. You have to do all the steps...We wet sanded as you did, buffed 3 X with 3M heavy duty, 3X with Med 3M and then with Finess. Then clean with alcohol and apply decals. Let cure in sun a few days then wax.
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Thanks.......Tom
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audiodude
Senior Member Joined: November-19-2012 Location: Badin Lake Status: Offline Points: 308 |
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I used Presta Ultra Cutting Creme, then Presta Chroma and waxed with collinite 885 fleet wax. Used wool pad for the cutting creme, foam pad for Chroma with a rotary buffer and hand waxed. The boat looks pretty good but I know wet sanding is in my future.
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2000 Ski Nautique 1989 Correct Craft 2001
In the words of Milton Berle: "You can lead a man to Congress but you can't make him think" |
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Waternut
Senior Member Joined: July-11-2012 Location: Macon, GA Status: Offline Points: 292 |
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I'm sure some people will not like this answer but here goes anyway...
Gelcoat has always been an nuisance for me. If you don't stay on top of it, it gets powdery. So the only option was to buff it at least once a year. If it gets too far, I was wet sanding and buffing. When that's done, then it's time to clean the inside of the boat thanks to all the splatter. I gave up about 1.5 years ago. Sanded the hull once and painted it. The paint has held up great, I've barely even touched it, and it still looks shiney and new... This is despite having left it uncovered all summer long where it never see's shade. |
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TX Foilhead
Grand Poobah Joined: February-01-2009 Location: Kingsland TX Status: Offline Points: 2076 |
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You were doing something wrong if it didn't stay looking good after a wetsanding and polishing. Either you didn't go far enough with the sanding, or you didn't take care of it afterwards.
The 3M stuff with their matching pads is pretty foolproof and works much quicker than trying to do it with wool pads. I wetsanded my blue stripe last year and its amazing what just getting rid of the orange peal does for the shine. New stripes coming this year so I'll get the orange peal out of silver cloud below the rub rail this year. |
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TRBenj
Grand Poobah Joined: June-29-2005 Location: NWCT Status: Offline Points: 21184 |
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Short answer: you're not going to restore the shine by hand, you need a machine. An orbital might get you there since you sanded so far up (normally you'd only have to go to 1000-1200 if using a real aggressive compound and a rotary buffer)... But that's tbd. A rotary is much more aggressive, which is a plus when working on gel... It's much harder an thicker than paint. The 3m products are very good and will produce proven results that are detailed in the common questions forum. There are other ways to skin a cat, but you may be on your own in figuring out how to get what you want using products that we aren't familiar with. |
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Morfoot
Grand Poobah Joined: February-06-2004 Location: South Lanier Status: Offline Points: 5320 |
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I know the factory uses 3M stuff and non rotary buffers I should have taken a picture of the container they were using for a final buff but figured I'd remember what it was. Needless to say I didn't. I'm pretty sure Tom nailed it when he said Finese. Sounds familiar and you know how they look right out of the factory.
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"Morfoot; He can ski. He can wakeboard.He can cook chicken.He can create his own self-named beverage, & can also apparently fly. A man of many talents."72 Mustang "Kermit",88 SN Miss Scarlett, 99 SN "Sherman"
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Gary S
Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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There is no short cut thats for sure.I tried everything before too
like using rubbing compound. Wasn't until I started sanding from 220 in spots to 2000 then using 3m 05973 rubbing compound and 05996 Perfect II,which I learned of here,that anything "took". |
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M3Fan
Grand Poobah Joined: October-22-2005 Location: United States Status: Offline Points: 3185 |
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Rotary with 3 levels of 3M compounds:
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2000 SN GT40 w/99 Graphics/Gel
2016 SN 200 OB 5.3L DI https://forum.fifteenoff.com |
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KRoundy
Platinum Member Joined: August-23-2010 Location: Lake Stevens Status: Offline Points: 1702 |
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WOW!!!! That's on black, which reflects well, but that is incredible. |
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Previous: 1993 Electric Blue/Charcoal Ski Nautique
Current: 2016 Ski Nautique 200 Open Bow |
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Swatkinz
Platinum Member Joined: December-03-2003 Location: Lexington, SC Status: Offline Points: 1307 |
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Joel,
That's what's I'm looking for. Thanks for the help, guys. |
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Steve
2011 Sport/Air 200 Excalibur 343 2017 Boatmate Tandem Axle Trailer Former CC owner (77, 80, 95, 88, all SNs) Former Malibu owner (07, 09) |
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TRBenj
Grand Poobah Joined: June-29-2005 Location: NWCT Status: Offline Points: 21184 |
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Steve, FYI, Joel followed the suggestions I gave him on the products/pads/etc that I detailed in the for common questions forum. I know several people who have used this recipe and turned out some amazing results. Check out pictures of Brad's (Barracuda) '86 or the Hart's boats... theyve got it down to a science!
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Swatkinz
Platinum Member Joined: December-03-2003 Location: Lexington, SC Status: Offline Points: 1307 |
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All,
If you complete your wetsanding with 2000 or 3000 grit paper like I did, does going over it with the 3M super duty compound not undo what you did with the fine paper? Hard to argue with results but dang that 3M SD is some gritty stuff |
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Steve
2011 Sport/Air 200 Excalibur 343 2017 Boatmate Tandem Axle Trailer Former CC owner (77, 80, 95, 88, all SNs) Former Malibu owner (07, 09) |
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TRBenj
Grand Poobah Joined: June-29-2005 Location: NWCT Status: Offline Points: 21184 |
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If youre sure that you got all of the scratches from previous rounds with the 2000 or 3000, then start with the middle step instead (medium grade compound) and see how it looks afterwards. If you dont see any larger scratches left, then proceed to the Finesse-It II.
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Donald80SN
Grand Poobah Joined: January-12-2009 Location: Denver, NC Status: Offline Points: 3896 |
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Steve,
Stop sanding and check those stringers by taking some deep core samples. There could be problems down under. Donald |
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Air206
Grand Poobah Joined: September-28-2008 Location: Roanoke, VA Status: Offline Points: 3000 |
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Now Donald, be nice.... you know you gotta hide the rot inside by keeping it shiny outside! Isn't that what we all do? Even sometimes with our boats.... |
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Donald80SN
Grand Poobah Joined: January-12-2009 Location: Denver, NC Status: Offline Points: 3896 |
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Steve K,
Water could be coming in from inside the boat and going through the glass, resin and gel from the inside and causing the dull finish. Just trying to help. Donald |
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iplan
Senior Member Joined: April-19-2010 Location: Lake Murry SC Status: Offline Points: 201 |
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This is an amazing transformation... Should give everyone hope that their gelcoat is incapable of being salvaged... |
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85 Ski Nautique 2001.
Stringer replacement job completed July 3 2014. Exterior painted June 2015. The Trailer is next. |
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Hollywood
Moderator Group Joined: February-04-2004 Location: Twin Lakes, WI Status: Offline Points: 13514 |
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Holding the buffer up is far easier on the arms than sanding. Super Duty removes 1000 grit scratches. Two passes of 1000 or maybe a 1200 to be safe but no reason to go past that unless you are seeking an upper body workout.
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iplan
Senior Member Joined: April-19-2010 Location: Lake Murry SC Status: Offline Points: 201 |
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Hollywood ~~~ Would like to see a picture or link to the buffer your recommending if you get a chance. |
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85 Ski Nautique 2001.
Stringer replacement job completed July 3 2014. Exterior painted June 2015. The Trailer is next. |
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Hollywood
Moderator Group Joined: February-04-2004 Location: Twin Lakes, WI Status: Offline Points: 13514 |
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Google image "rotary buffer"
I like the makitas |
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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I like the Milwaukee. Mine hasn't let me down yet. |
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DrCC
Grand Poobah Joined: April-12-2004 Location: at home Status: Offline Points: 2867 |
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I like the Milwaukee, BUT it's a tad fast and a tad heavy.
I think the ideal speed is 1200 to 1500 rpm's my Milw. is 1700. I agree with H/W over 1000 gt. is a waste, let the compound do it. |
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Al, Maybe you bought the cheapest Milwaukee? The one I linked And the one I have is: Operating Speed (RPM): 0 - 1,750 Yes, it is on the heavy side but that's due to it's HD construction. |
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DrCC
Grand Poobah Joined: April-12-2004 Location: at home Status: Offline Points: 2867 |
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And, It probably should be noted that four 60.00 machines Does Not equal one 240.00 machine.
Porter-Cable also makes a real good machine. |
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DrCC
Grand Poobah Joined: April-12-2004 Location: at home Status: Offline Points: 2867 |
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Pete, I bought my Milwaukee probably before the variable speed was available. I've had it since the early to mid '80's, back then it was 180.00 So, it's really great to see the costs have not gone up that much. That's a lot of long lasting machine for 219.00
edit: and I didn't know that last line rhymed until now. I'm thinking: tag line. ________________ That's a lot of long lasting machine for 219.00 |
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Al,
I don't know how you missed the variable speed. I bought mine in 85 to buff the varnish out on my Atom. It was the first bright job I buffed and knew I needed the real low speed. At least on a horizontal surface, they aren't that heavy! |
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62 wood
Grand Poobah Joined: February-19-2005 Location: NW IL Status: Offline Points: 4527 |
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I use a Sioux Air buffer A lot lighter, but you need a good air compressor..
btw, I did some "horse trading" to get mine. There are also some less expensive ones out there that work fine as well. . |
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