eric they are not pure aluminum they are some alloy
i baked them at 550 for 1.5 hrs the last time i tried it and they still came out like you had sand under
the powdercoat
the big right side cover came out ok but the 2 small left side ones were almost as bad as the first time
so they have been baked 3 times 400 for 1hr no go 450 1.5 hrs no go then the last time 550 i hr
i think its the alloy
the powder is bonded ok just keeps pitting the finish on the full cure of 400 degrees for 20 mins part temp
i have never had this with aluminum
i baked them at 550 for 1.5 hrs the last time i tried it and they still came out like you had sand under
the powdercoat
the big right side cover came out ok but the 2 small left side ones were almost as bad as the first time
so they have been baked 3 times 400 for 1hr no go 450 1.5 hrs no go then the last time 550 i hr
i think its the alloy
the powder is bonded ok just keeps pitting the finish on the full cure of 400 degrees for 20 mins part temp
i have never had this with aluminum