Author Topic: Poweder coat guys - here's a quickie  (Read 781 times)

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Offline greenjeans

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Poweder coat guys - here's a quickie
« on: July 26, 2018, 07:00:57 AM »
I have an "oil in frame" frame that I want to powdercoat.    Good idea or bad ?
I've run a little solvent through the frame and hit it with compressed air.   This thing has been sitting for months at all different angles and I still get a drip here and there.
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Offline pjlogue

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Re: Poweder coat guys - here's a quickie
« Reply #1 on: July 26, 2018, 07:56:24 AM »
You can try washing the oil out with acetone or kerosene.  I would give it 3 rinses with either.  Fill the tube(s) and let it set for a couple of hours then drain for each "rinse"   If the tubes are open at both ends blow air through to dry otherwise let it sit in the sun for a couple of days to really dry out before coating it and baking. 

-P.

Offline lrutt

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Re: Poweder coat guys - here's a quickie
« Reply #2 on: July 26, 2018, 11:44:55 AM »
If they sand blast the frame before coating. Be VERY CAREFULL NOT TO GET SAND IN THAT OIL RESEVOIR. Or you will be screwed.  Why not just paint it?
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Offline calj737

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Re: Poweder coat guys - here's a quickie
« Reply #3 on: July 26, 2018, 01:48:09 PM »
Most quality powder cost shops bake the frames, sometimes first to remove paint and rust. If they bake it first it should not be a problem.
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Offline MikeSimon

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Re: Poweder coat guys - here's a quickie
« Reply #4 on: July 26, 2018, 04:56:56 PM »
The issue is the oil that sits deep in the pores of the metal. It will seep out when the powder is baked and compromise the coating. It is a challenge to get rid of it. baking before may help in some cases. We had apparently completely dry frames being messed up from the grease in the steering head.
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Offline greenjeans

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Re: Poweder coat guys - here's a quickie
« Reply #5 on: July 27, 2018, 06:42:51 AM »
Was going to paint it, but got an offer that's hard to refuse...free
Was just concerned about the oil.  Kerosene fumes not worth worrying about when heated?
Yep, I'm the kid that figured out how to put things back together...eventually.

Offline cb650

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Re: Poweder coat guys - here's a quickie
« Reply #6 on: July 27, 2018, 11:55:13 AM »
prebake     then another cleanup.
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