|
|
Post by jeffery on Dec 9, 2006 12:46:14 GMT -5
Can an XS brake caliper withstand the powdercoating process? I painted mine with a rattle can but the slightest amount of brake fluid on the caliper spells trouble for the paint. Was considering powdercoating it but thought the powdercoater had said he couldn't do it. I think they blast them first.
Jeffery
|
|
|
|
Post by joebob1999 on Dec 10, 2006 10:54:33 GMT -5
They are very easy to powder coat. You have to work on getting an even coat. It's hard to get powder down in grooves and holes. First I file off the casting lines to make a cleaner looking part (minimizes chipping along the seam also) then bead blast the caliper (glass beads). You'll have to tape off where the banjo bolt goes (leaving bear aluminum where the copper washer seats), the bleed screw and seal off the bore for the piston. I just use regular masking tape. You will have to carefully remove the tape before you bake the piece. I will fold the tape back on its self to make a tab that I can grab with pliers and peel back. Here are some parts I've done...calipers included. You can see the masked area on the back of the points housing on the right, just used a gasket as a template to make a paper stencil to cover that area. Spayed the powder and lifted it off, it left a very clean surface.  |
|
|
|
Post by 82bobber on Dec 11, 2006 5:54:42 GMT -5
NICE PARTS!
|
|
|
|
Post by hooktool on Dec 11, 2006 22:43:09 GMT -5
JoeBob,
What color silver/chrome is that. Any clear coat? What brands?
Thanks,
John
|
|
kzjim
Full Member
Posts: 117
|
Post by kzjim on Dec 12, 2006 10:19:02 GMT -5
Nice work....!!
Turn off the power, discharge and up the air pressure a bit to get in the tight spaces...
|
|
|
|
Post by jeffery on Dec 12, 2006 10:52:06 GMT -5
Hey Joebob, nice lookin parts. Are you in the powdercoating business?
Jeffery
|
|
|
|
Post by ShakerNorm on Dec 12, 2006 14:26:31 GMT -5
Damn - now I can't wait to get my garage wired for 220 - so I can use my old oven to do all the powdercoating I've been wanting to do  Damn - they look good, Joebob! Hope all my parts look that good when I'm done....  |
|
|
|
Post by spyug on Dec 12, 2006 14:51:35 GMT -5
Don't want to hijack the thread but I/m wondering if you can powder coat plastic?
The reason I ask is in the photo there is a dipstick that has been done and the handle ( on mine)is either plastic or Bakelite or something other than metal.
I am no electrical expert but I think I heard or read that some plastics can have electrostatic properties ( which would attract the paint). Am I right?
If the paint/powder could be laid down the problem would be to cure it, wouldn't it? I think 450 F is going to melt any plastic I know of. Can the paint cure at lower temps or is there some special paint/powder used?
I'd be interested in knowing more.
Cheers,
Spyug.
|
|
|
|
Post by joebob1999 on Dec 14, 2006 22:39:48 GMT -5
I bought the powder off eBay, not sure of the brand. That particular dip stick is aluminum with a steel "stick". Just powder coated the top part. Most parts I bake in a toaster oven. You can check out the "$20 Powder Coat oven" thread for some more info. I don't get a perfect finish but from 3 feet away it looks pretty good. And if anyone is going to comment on an imperfection at that range, they are close enough to smack over the head... I've seen plastic done before but I'm sure it was a special type. None of these parts have clear coat. Just "Chrome" and Gloss Black. Here is a better shot of the caliper and fork mount.  FYI...I found a source of stainless steel brake caliper pistons. The chrome steel ones were junk and MikesXS was out of chrome steel replacements. The stainless ones are actually for a 70's Honda GL1000. Check out www.oldwings.com/services.html#caliperStainless is on the left.  |
|
