Powder Coating chipping?

[Fireblade]

Surely sounds like undercure to me, as said before. I think prep would cause different types of problems other than chipping off, maybe peeling off but not a chip like in paint. 35 to 45 mins is a long time with a IR lamp, ya sure ya wanna go that long?? If you look at temp and time curve with the Ir lamp, it is much shorter than a oven would be. I would try moving the light closer to up the heat, maybe a bit longer on time, but not that long. Just my opinion.

[DALE]

These guys are right on prep and to me it sounds like under cure.
Yes you can overcure powder, You will notice shade differences from part to part if cure cycles vary alot. The quality will still be there as far as durability though. Differnt powder formulations resist overcure differently.
This is most noticable with light colors.

[non-stick]

once again I concur with you guys in all that you say. I have nothing to offer this post other than a "hope ya learned something from your bretheran.... they all hit the nail on the head,basically". Well done indeed guys. I like the unity and helpfulness you guys share with one another. Small group (but growing) and tight knit. You're all well on your way to being tops in the hobbyist field (if not above!)..... Russ