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Aging brass before clear coat?
eligius1427 -
Friday, April 18, 2008 - 12:14pm
brass | finishing Hi all, I got the last of my parts in for the brass panels and am putting the final polish on certain areas that needed it. I noticed that the areas I had polished a few weeks ago were a slightly darker and richer color than the freshly polished area. I don't mind the richer color, I was just wondering if I should let the piece sit for a week or two, so the touched up areas will be the same color/shade as the non-touched up areas? I'd rather not have to go over the whole thing again. Also is there a buffing compound that can be applied by hand, soft towel, and elbow grease? I've purchased many different bobs and wheels and there are some spots I still can't get to very well. Jake Thanks Rich, is the "white
eligius1427 -
Saturday, April 19, 2008 - 10:17am
Thanks Rich, is the "white diamond compound" your talking about the same as the "white compound" bar that comes in the sets with black, brown, green, ect? Do I just rub it on a felt rag and then start polishing? For some reason I thought these bars needed heat from the spinning wheel to work properly(I'm not exactly sure why I thought that). I had already talked to an automotive store but didn't know how aggressive their compounds were. There were labeled by terms like final polish. Does anybody know about what grit the white compound might be and is there a liquid/paste alternative? Jake » reply The buffing compounds in
Rich Waugh -
Sunday, April 20, 2008 - 2:02am
The buffing compounds in sticks are just grit plus was/grease/binder, etc. They work fine cold, often better that way, actually. Typically, hand rubbing compound is faster cutting (coarser) than machine rubbing compound, and the final polish stuff is the finest of the lot, having only polishing, as opposed to cutting, particles in it. Cutting compounds, such as pumice, emery, tripoli, white diamond, etc, are sharp little particles of abrasive that abrade away the surface of the work. Polishing compounds such as rouge are typically composed not of sharp grains, but of tiny platelets of material that "burnish" the surface of the work. Aggressiveness of various compounds is all relative. Pumice is highly aggressive on paint, moderate on soft metals, and does nothing to hard metals like carbides. Hope this helps. » reply Thanks for your help Rich,
eligius1427 -
Sunday, April 20, 2008 - 4:07pm
Thanks for your help Rich, that answers a lot of questions. Jake » reply |
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Jake, I'd think it would be
Jake,
I'd think it would be a good idea to have it all one color before you shoot a clear coat.
You can hand buff with White Diamond and some felt just fine. If you need to do a bit faster cutting, try some automotive hand rubbing compound, followed by machine rubbing compound (finer cut), and finished up with the White Diamond.