The Shop > Finishing

Powder coating - cheap alternative

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AdeV:

--- Quote from: dickda1 on April 18, 2011, 01:32:33 AM ---
San Francisco has had some pretty good earthquakes in the 35 years I have lived here.


--- End quote ---

I can see how that might bugger up the surface finish...

Powder coating Q: Do you powdercoat all surfaces in 1 go, and if so, how do you hold/suspend the item in your oven?

dickda1:
I thread wires or paper clips through holes in the parts and suspend inside the oven.  The assembly you see was completely taken apart and sprayed in separate pieces.  Precision surfaces inside the hub were masked off to prevent powder coating.  The hub was supported from the inside during spraying and in the oven.
I have never tried to finish various parts of an item in separate operations - you get one go as far as I know.  The coating does not come off easily even with paint remover so getting it right the first time is important.

AdeV:
Ta, interesting stuff. One more question - if you wanted an entire part powdercoated, would suspending it on wire work? Surely the bit where the wire touches the part, doesn't get coated? How do you get the wire off without damaging the coating?

Just curious... I'd like to have a crack at powder coating myself one day, when I have a part that justifies it...

dickda1:
I have never completely coated a part.  For my projects, there have always existed a through hole for a roll pin or surface that did not require coating. Going to shut up now since there are people out there who I am sure know this better than I. ::)

Dick

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