Wrong DA?

plumkrazee70 said

thanks everyone for the replies. I'm going to be using SPI epoxy primer and it specifically states that needs to be bare metal.

I guess I was expecting more progress with 80. Ill try 40 and then hit with 80 after I get close.

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well if I were in your shoes I'd use a paint stripper my god don't use 40 grit take your time and don't turn the heat up on the grinder you will warp the metal and be in a pickle. paint stripper is nasty **** but if you keep your fingers out of it and have plenty of air movement in your work area you'll do fine. you can't rush it, it takes time. trust me been there