Powdercoat RPF1's - Pics added Pg 2
Apr 21, 2010, 11:30 AM
#16
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I've heard of this, mostly with glass beads though. Is it that the powder doesn't adhere well or is it merely a cosmetic thing where you see little bumps and what not? I used a medium grade sand that was slightly larger than 1.5 mils. I talked to a sandblasting place and they suggest that range for aluminum.
Apr 24, 2010, 05:09 AM
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Wheels look great man!
Sand blasting does not embed anything, it actually makes for a perfect surface when powder coating.
Bingo. They are exactly right in what they recommended for you.....
Depending on the thickness that is already on there, you can't add more coats of powder coat without getting "too" thick. Not only this but you don't know how the old coating was prepped........if it wasn't prepped properly you'll have a big mess down the road.
Find a place that does soda blasting. If you sand blast it depending on what grade its is, can inbed into the wheels and make for a bad surface for the powder and will not bake on very good. DO NOT bake it at 900* whatever you do that will weaken the wheels for sure. GL
I've heard of this, mostly with glass beads though. Is it that the powder doesn't adhere well or is it merely a cosmetic thing where you see little bumps and what not? I used a medium grade sand that was slightly larger than 1.5 mils. I talked to a sandblasting place and they suggest that range for aluminum.
Depending on the thickness that is already on there, you can't add more coats of powder coat without getting "too" thick. Not only this but you don't know how the old coating was prepped........if it wasn't prepped properly you'll have a big mess down the road.
Last edited by ct78155; Apr 24, 2010 at 05:13 AM.
Apr 25, 2010, 09:52 PM
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They look good man
[QUOTE=ct78155;8235822]Wheels look great man!
Sand blasting does not embed anything, it actually makes for a perfect surface when powder coating.
It will if you use to high of a grit, but thats what I was told from people that powder coat for a living. What do I know
[QUOTE=ct78155;8235822]Wheels look great man!
Sand blasting does not embed anything, it actually makes for a perfect surface when powder coating.
It will if you use to high of a grit, but thats what I was told from people that powder coat for a living. What do I know
Apr 26, 2010, 04:21 AM
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They came out really nice looking. For the record you NEVER want to bake a forged aluminum wheel at that temp. Even 450 for more than a half hour can weaken them structurally. I always sandblast clean as much as I can get off then wash, wipe down with acetone and apply powder. You cant bake that stuff off but you can apply over a lightly blasted coat of old powder if it's in good condition by heating the part up to 150 degrees then applying a new coat while it's still hot. It's not ideal but it will work. There is also several brands of powder remover that work very well.
Last edited by colonelfox; Apr 26, 2010 at 04:24 AM.
