Re: Sand for blastung aluminum wheels
You need to glass bead them with fine or meduim grade grit. Then hand sand with 220grit sand paper till they are very smooth thats if you want to have a very bright chrome finish using a top coat such as Super chrome base, also spray at least 18" away to allow the fine dust get to the part. If you spray close it will make the chrome powder darker.
*Make sure you fully cure the chrome at a high temp like 425f for 30mins. Also outgass them first at about 450f for around 30-40mins. You will need to top coat anything chrome powder coated with clear powder.
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