Lars L Posted April 6, 2009 Share Posted April 6, 2009 I bought myself a winchbumper a few years ago, and as expected, the coating has started to flake off and letting rust creep in. Is there any cunning way to get the coating off other than a gasburner and elbow grease? Quote Link to comment Share on other sites More sharing options...
bishbosh Posted April 6, 2009 Share Posted April 6, 2009 Flap wheel in a grinder? Wire wheel in a grinder? Quote Link to comment Share on other sites More sharing options...
rtbarton Posted April 6, 2009 Share Posted April 6, 2009 It's a sod to shift. Mechanical means are very laborious if they work at all. If it's good quality gritblasting won't touch it, although something like a bumper should be able to withstand fairly serious blasting. You're really looking at a chemical means: Look here Chemicals Ltd Cirrus If it's flaking it's more likely to be a plastic or nylon coating rather than powder. Quote Link to comment Share on other sites More sharing options...
jacks906 Posted April 6, 2009 Share Posted April 6, 2009 what are the plans with the bumper if you were geting it galv's after it may be worth asking the galvers they may be able do it otherwise there are some very strong paint removers that work, a mate got me a tin once i'll see if can get the name, removed the power coat also melted my boots sole and made the cement on the garage floor go funny dave Quote Link to comment Share on other sites More sharing options...
markt Posted April 6, 2009 Share Posted April 6, 2009 just done the same on my bumper, Shot blasted then galvanised which will hopefully keep the rust away for a while longer Quote Link to comment Share on other sites More sharing options...
Lars L Posted April 6, 2009 Author Share Posted April 6, 2009 I've tried with a paint remover I have at hand. It makes the surface a bit softer so it can be scraped off with a knife, but it will most probably have to be repeted a zillion times before reaching the steel. The bumper is made by a company with "Four" in its company name... No complaints otherwise. Quote Link to comment Share on other sites More sharing options...
hoarebag Posted April 6, 2009 Share Posted April 6, 2009 Buid a large bonfire and put it on the top. Quote Link to comment Share on other sites More sharing options...
ciderman Posted April 6, 2009 Share Posted April 6, 2009 Shot blast is going to be the easiest option , Espesialy if you get someone else to do it , If your going down the mechanical removal or blowtorch route make sure you have some breathing apperatus as that **** gives of some nasty toxic fumes . Quote Link to comment Share on other sites More sharing options...
rtbarton Posted April 6, 2009 Share Posted April 6, 2009 Shot blast is going to be the easiest option , Espesialy if you get someone else to do it , If your going down the mechanical removal or blowtorch route make sure you have some breathing apperatus as that **** gives of some nasty toxic fumes . I do gritblasting for a living and I've never been able to shift it. Some poor quality powder coating will eventually move. I'm seriously considering installing a stripping bath for powder coating and so on. Quote Link to comment Share on other sites More sharing options...
muddy Posted April 6, 2009 Share Posted April 6, 2009 Get a decent fire going, let it die down and chuck it on top. Quote Link to comment Share on other sites More sharing options...
Turbocharger Posted April 6, 2009 Share Posted April 6, 2009 I've used the bonfire method before with success... I looked at the flap wheel and all the nooks and crannies and decided burning was the favourite option. Quote Link to comment Share on other sites More sharing options...
Lars L Posted April 6, 2009 Author Share Posted April 6, 2009 Well, I had a go this afternnon with the blowtorch and a wood chisel. Outside and it was a little windy, so I still feel OK. Most of the coating on the visual surfaces is gone and some sanding will probably deal with the remains. Then I took the bumper off to find lots of loose coating with plenty of rust on the hidden parts. I think handing the thing over to a galvanizer would be the best option... The rear bumper on my Disco is showing similar signs at its ends... Quote Link to comment Share on other sites More sharing options...
integerspin Posted April 6, 2009 Share Posted April 6, 2009 Grit blasting removes it really easy. I used to do the blasting for a powder coaters and they usually removed coating with nitromors. They bought 5 gallon cans of methylene chloride[nitromors] and the parts were immersed in it for 24 hours or so and the powder washed off. Quote Link to comment Share on other sites More sharing options...
rtbarton Posted April 6, 2009 Share Posted April 6, 2009 Grit blasting removes it really easy.I used to do the blasting for a powder coaters and they usually removed coating with nitromors. They bought 5 gallon cans of methylene chloride[nitromors] and the parts were immersed in it for 24 hours or so and the powder washed off. Not proper powder coating it won't! at least not some of the stuff I've had in. Glass grit, J-Blast, Sand, chilled iron, won't even mark it. Quote Link to comment Share on other sites More sharing options...
integerspin Posted April 6, 2009 Share Posted April 6, 2009 We didn't have any problem removing it with chilled iron, the problem was we destroyed the sheet metal parts doing it. Try methylene chloride, you get it from chemical supply places, in 1989 it was about a tenner for 5 gallons. stick it in a tank/sink and put a few inches of water on top of it to prevent it evaporting. Great way to clean cylinder heads in. I think the powder coated stuff was left for 24 hours before being pressure washed. Quote Link to comment Share on other sites More sharing options...
rtbarton Posted April 6, 2009 Share Posted April 6, 2009 ........, the problem was we destroyed the sheet metal parts doing it.......... You're not supposed to remove the metal from the coating, that's cheating Quote Link to comment Share on other sites More sharing options...
ciderman Posted April 6, 2009 Share Posted April 6, 2009 Not proper powder coating it won't! at least not some of the stuff I've had in. Glass grit, J-Blast, Sand, chilled iron, won't even mark it. I guess it depends on how well the powder coating is applied , I blasted the powder coating off my Mach 5`s with Jblast and it took about a whole bag to do each wheel .I had a small nozzle fitted though . Quote Link to comment Share on other sites More sharing options...
JST Posted April 6, 2009 Share Posted April 6, 2009 rub it along a tree that seems to work well at getting it off cages! Quote Link to comment Share on other sites More sharing options...
ciderman Posted April 6, 2009 Share Posted April 6, 2009 rub it along a tree that seems to work well at getting it off cages! Only at your events James , Plastic coated trees here in Somerset /Devon Something like square peg ,round hole Quote Link to comment Share on other sites More sharing options...
Lars L Posted April 7, 2009 Author Share Posted April 7, 2009 I have now had a good night's sleep... Since I am a dedicated DIYer, handing the bumper over to someone else is cheating . The plan now is to brush the loose rust off the rear side and treat it with a couple of coats of Owatrol followed by paint. The visible side will be sanded smooth, primered with zinkspray and then painted. But first I will cut the brackets off and drill some new holes that will put the bumper back an inch or so. B) Quote Link to comment Share on other sites More sharing options...
tuko Posted April 7, 2009 Share Posted April 7, 2009 Which winch will you be using Lars? Quote Link to comment Share on other sites More sharing options...
Lars L Posted April 7, 2009 Author Share Posted April 7, 2009 The same as before. MileMarker hydraulic. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.