First time powder coating, wheel defects

Posted: February 19, 2011 By: sixt5

Home Forums Powder Coating First time powder coating, wheel defects

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    sixt5

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    first time firing up my home made oven (4 tall x 8 long x 3.5ft wide) and i powder coated an aluminum wheel and a flat piece of 22ga steel.

    let me first state my temperature gun (from lowes) is very inacurrate and not consistant

    sanded the clean wheel with a rough scotch brite
    clean with de-natured alcohol
    pre heated the wheel to about 350
    shot with columbia’s low gloss black using eastwood dual voltage gun

    problem 1: i didnt feel like the powder was sticking to the wheel that good. i had to almost force it on in some areas. i had a good clean ground hooked through the valve stem hole.

    once shot, stuck into oven
    part temp up to 360ish (guessing cause of gun)
    20 minute bake
    let cool

    i knew going into this that powder around the beads were going to be iffy cause its hard to clean with a scotch brite. i have a sand blast cabinent ready and i guess i could use chemical stripper if needed. this was a test piece so no worry. Some areas looked great to me, while others not.

    pics:
    dust visable is on top of the powder from transporting. didnt wipe before pics

    IMG_4352.jpg
    IMG_4353.jpg
    IMG_4351.jpg
    IMG_4350.jpg

    small piece that was in the oven same time and temp as the wheel (roughly 4inch x 10 inch)
    IMG_4354.jpg

    ideas?

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