filling pits

[machone]

I have a set of NEW calipers, bright silver finish (does not burn off). PC'd the inner bracket with lollipop blue & turned out great! Main body has pits in the casting (cast iron) I tried solder, but I can't get it to stick. What can I use to fill these pits? I'm trying to forego the chrome base.
mach

[machone]

Re: filling pits

As an afterthought, I think they're small enough that they won't show dark spots, could I use Liquid Steel or something similar?

[Popeye]

Re: filling pits

Yep, JB Weld works good too..

[Heavykote]

Re: filling pits

I'm having a problem with pitting too! I have a rim and pitted all over. I even used lab metal to the crater area, but you can see the lab metal fill under the chrome powder. I outgassed and it didn't help. What do I do about this?

[tinbender722]

Re: filling pits

JB Weld is good up to about 600 degrees, and it sands fairly easily too.

Leo

[machone]

Re: filling pits

Thanks guys!
I got some stuff from work "P.M.C. Super Quick Set". I'll try JB weld too, see which works best.

[machone]

Re: filling pits

OK, Used the stuff from work, let it set & gave it a light wire wheel to match the texture. Used carb cleaner to clean it,(read that somewhere in here) heated it at 300f to burn it off. I coated it, cured it, & came out with fish eyes. DOH! Lightly sanded it with 200 grit just to smooth the fish eyes, recoated it, cured it, came out GREAT! The only thing was(back to the pits) it did show the dark spots. Not very noticeable, but they're there. SO.... if you have to fill pits when using translucent colors, ya gotta put the base coat on it! As a side note, blasted & cleared an old rotor I had laying around, makes a killer display base! One of these days we'll get a digital camera!
mach

[sswee]

Re: filling pits

Something you might try also is when you use brake wash or any solvent, hang the part in the oven at around 150* for 10 to 15 minutes to make sure all the slovent is out of the pores. I have had brake wash cause fisheye before I started drying in a warm oven.
SS

[pickleboy]

Re: filling pits

Used carb cleaner to clean it,(read that somewhere in here) heated it at 300f to burn it off.

brake clean instead of carb clean. carb clean has tolulyene(spelling?)in it and it leaves a residue that is hard to get off. brake clean works good though. also if you have the safety gear mek works great but it pretty bad stuff.

[machone]

Re: filling pits

sswee, did that, at 300 for about 10 minutes. Think the problem was the Gumout instead of Brakleen (copyrights, of course). I'll stick with the Gumout, don't want "bad stuff" in my basement!
Thanx for the info bothofyas!
mach

[machone]

Re: filling pits

sswee, did that, at 300 for about 10 minutes. Think the problem was the Gumout instead of Brakleen (copyrights, of course). I'll stick with the Gumout, don't want "bad stuff" in my basement!
Thanx for the info bothofyas!
mach

oops, meant brakleen

[finishline]

Re: filling pits

Avoid cleaning parts with carb cleaner. Most carb cleaners contain silicone. Try using brake cleaner instead.