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Author Topic:   Working with 3M 5200
whalerajm posted 02-28-2004 04:11 PM ET (US)   Profile for whalerajm   Send Email to whalerajm  
I took advantage of the 50 degree weather here in NJ today to start filling the 32 old screw and rivet holes in deck of my my 1975 Montauk.

Elected to use 5200 and wood dowels...Drilled out all holes to 3/16 and started "squirting" 5200. I was surprised at how thick it was and how hard to work with it was. It was tough to get it out of the tube and the only way to get it down into the holes was to push it in with my fingers...Leaving a nice mess to be cleaned up around every hole on the non-skid.

Is there a less viscous polyeurothane sealant that's easier to work with than 5200? Can 5200 be heated to thin it out a bit? Is there a secret to working with 5200 I haven't figured out?

HAPPYJIM posted 02-28-2004 04:22 PM ET (US)     Profile for HAPPYJIM  Send Email to HAPPYJIM     
I just used some to fill some 1/2 bolt holes on my work truck. It was not thick at all. I just squeezed right from the tube without the nozzle attached and it worked fine.
Temp was about 50 also.

Is it old?

Jimm posted 02-28-2004 04:25 PM ET (US)     Profile for Jimm    
Uh oh, sounds like you got some old 5200; mine was easy to work with.
whalerajm posted 02-28-2004 05:03 PM ET (US)     Profile for whalerajm  Send Email to whalerajm     
I just bought it from local marina...might have been on the shelf a while, but tube was new and sealed.
overbrook posted 02-29-2004 02:33 AM ET (US)     Profile for overbrook  Send Email to overbrook     
whalerjam- Yeh it was probably ancient-I just had the same problem-mine would'nt come out either,I squeezed so hard the back of the tube blew out.I went bought a tube of lifecaulk and that worked fine,went to walmart and bought another tube of 5200 and that was fine.Guess where I got the first tube of 5200??Yep a marine dealer!Go get a new tube from walmart or order some from someone like boatersworld where they move the stuff a little quicker.Question- did you get it all over your hands too? It took me a week to get it off!!!
whalerajm posted 02-29-2004 08:57 AM ET (US)     Profile for whalerajm  Send Email to whalerajm     
Thanks Guys,

Sounds like the 5200 was old...It was my 1st time using 5200 so I didn't know the product was comprimised.

Overbrook...Yea, my hands are a mess...

Thanks for input...I'm going to wait till next weekend and finish the job with a new tube of 5200...If that tube is bad I'm going the epoxy route.

overbrook posted 02-29-2004 09:23 AM ET (US)     Profile for overbrook  Send Email to overbrook     
Whalerjam- don't let that one bad tube put a bad taste in your mouth 5200 really is great stuff when you get a fresh tube!If your filling holes in the deck I probably would go with epoxy or some fiberglass resin - again check out they have almost everything you will ever need in the way of epoxys,resins,paints,sealants and so on.They are a bit pricey on a few things but for the most part they are in line with everyone else and chances are if you can't find it anywhere else they've probably got it. Tom
jimh posted 02-29-2004 09:29 AM ET (US)     Profile for jimh  Send Email to jimh     
WEST System epoxy would make a great adhesive for producing a water tight bond between wood and laminate.
overbrook posted 02-29-2004 10:28 AM ET (US)     Profile for overbrook  Send Email to overbrook     
Whalerjam- another product to consider for filling old holes is Gitrot -its made for repairing minor damage due to rot of transomes and would probably be great for filling old screw holes and the like as it fills it saturates into the material to fill as well as harden the material around the area. Tom
John O posted 02-29-2004 11:22 AM ET (US)     Profile for John O    
Pick up a box of the disposible rubber gloves while you are at it. They come in either 50 or 100 count. Great and easy way to keep your hands clean and away from many of the nasty products we use on our boats.
whalerajm posted 02-29-2004 02:35 PM ET (US)     Profile for whalerajm  Send Email to whalerajm     
I got impatient...picked up a new tube of 5200 and finished the job...New tube was fine...Just ticked off about all the time I spent yesterday working with the old stuff and cleaning up the mess.

Next stupid (and too late to help me now) question...Does 5200 come in a beige or off-white that's closer to desert tan?

overbrook posted 02-29-2004 07:17 PM ET (US)     Profile for overbrook  Send Email to overbrook     
whalerjam- I know where your coming on the patience thing,I often have to tell myself to calm down for fear of making a mistake or having fixer-upper remorse by jumping into something to quickly. And no white is the only color I have seen in the 5200,4200 and so on, I have seen other products in white,black, beige and clear and so on but none with the reputation of the 5200.You could squirt some out on a piece of cardboard and add paint pigments without comprimising the qaulity but again a messy job. Tom
whalerajm posted 02-29-2004 08:43 PM ET (US)     Profile for whalerajm  Send Email to whalerajm     
Just found a "Tan" version of 5200 on the internet, now that job is done with white...But it does exist...don't know how close a match it is to the desert tan though.
Sal DiMercurio posted 02-29-2004 08:48 PM ET (US)     Profile for Sal DiMercurio  Send Email to Sal DiMercurio     
I've found that keeping 5200 in the fridge, it will stay fresh much longer.
Also, acetone will clean it up very nice.
John O posted 03-01-2004 11:02 AM ET (US)     Profile for John O    
The mahogany 5200 may be darker than Desert Tan. I have seen it in the large cauking gun size tubes. Sal is right about the freezer.
Florida15 posted 03-01-2004 11:48 AM ET (US)     Profile for Florida15  Send Email to Florida15     
What does 5200 look like when it dries ? Does it look like
the fiberglass or more like silicone ? Is this the best stuff for filling screw holes ? Is it best to drill them out first ?
whalerajm posted 03-01-2004 01:42 PM ET (US)     Profile for whalerajm  Send Email to whalerajm     

So far it looks like a silicone adhesive after 2-3 days of curing...It's bright white and really stands out on desert tan...

I just filled 32 holes in my deck...I would recommend drilling them out...I had a bitch of a time getting it down holes I drilled out to 3/16...I added some 5200 to each hole, then pushed in poplar dowel plug and topped off with about 1/2 nch of 5200...I also drilled small counter sink in gelcoat above screw hole to make small well for better seal...I'm thinking about shaving down 5200 a little a trying to cover with a little gelcoat paste, mostly for cosmetic reasons...

Can anyone tell me if Gelcoat can be applied over 5200?

HAPPYJIM posted 03-01-2004 02:14 PM ET (US)     Profile for HAPPYJIM  Send Email to HAPPYJIM     
I just shaved down the 5200 that I filled those 1/2" holes on my work truck. I over filled each hole knowing that I would shave it down later. The center of each piece that I shaved was hollow...I did not expect that so plan on a dimple being there.

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