Powder coating

[John MCParticipant @johnmc39344]

I want to fill some imperfections in a number of steel parts before having them powder coated.  My understanding of the process is that the part needs to be electrically conductive so the powder sticks.  Traditional body fillers, Isopon etc., are not conductive.

Also the heat involved, around 200deg C?   I can’t see body fillers liking that!

Is there a special filler available?  I’ve seen something called “Lab Metal”, good for ~170deg C, supposedly good for powder coating.  Conducting.  Very expensive though.

Solder might be a way forward, conducts and good for 300deg C.

Any thoughts?

 

[David Gibbons 1Participant @davidgibbons1]

all of the videos I have seen use car body filler or JB weld epoxy. seems to work for them

 

[duncan webster 1Participant @duncanwebster1]

Most lead/tin solders melt at a lot less than 300C (typically 180) even the lead free stuff is 217C. Comsol is higher, but I’d just ask the power coating man (unless you’re doing it yourself)

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