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Ted Mooney, P.E. RET
Pine Beach, NJ
The authoritative public forum
for Metal Finishing since 1989
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Bondo repairs on railing can't take 400°F powder coating
Q. I WORK FOR A RAILING COMPANY AND SOMETIMES WE HAVE TO FIX ALUM. RAILS. AFTER WERE DONE SANDING AND GRINDING, WE APPLY Bondo
⇦ this on
eBay
or
Amazon [affil links]
AND THEN WE RE-POWDER COAT THE RAIL. THE BONDO THAT WE ARE CURRENTLY USING CAN NOT BE USED IN AN OVEN AT 400 DEGREES.. WHAT DO YOU SUGGEST?
THANKS,
ARCHITECTURAL COLUMNS AND RAILING SYSTEMS - WINDSOR MILL, MARYLAND
2005
A. I'm not a professional but I happened to stumble upon your question and it reminded me of a subject on a web site I had been looking at the other day. This other site was discussing what is called "molding", filling in gaps and smoothing out welds on motorcycle frames before powder coating. They had the same problems with Bondo and the heat required to powder coat. They said their best solution to this problem was a product called "Lab-metal ⇦ this on eBay or Amazon [affil links] " that they applied in thin coats and sanded. It is supposed to withstand the heat of powder coating without any problems.
Francis Fields Jr.- Maryland, united states
I have been faced with this problem many times in the past in my coating job shop and as a previous person mentioned, Lab-metal
⇦ this on
eBay
or
Amazon [affil links]
does work well for small defects. I find it a bit tedious. Another option that you may consider is JB Weld
⇦ this on
eBay or
Amazon [affil links]
.
You will need to preheat the item for recoating as it is not electrically conductive. There are other high temp epoxies that may function as well but again preheating is necessary.
- Colwyn, Pennsylvania, U.S.A.
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