[Chevelle-list] Electric or pneumatic grinder?

[George Spatta]

Hi all,   I'm getting ready to start cleaning the interior metal on my '66 and was wondering what kind of grinder (electric or pneumatic) and discs work good for taking off almost 40 years of crud? All the metal is rust free so I just need to get it clean for the POR15 or DP90 (haven't decided which way to go with that yet!) I have an industrial size air compressor  but haven't seen a lot of pneumatic grinders that look like they are big enough to do the job efficiently. I was hoping to find a pneumatic grinder smaller and lighter than most of the 4 1/2" electric ones I've used before. The 3M bristle discs look like they would work well, has anyone used those?   All opinions & recommendations are appreciated!   Thanks!   George [EMAIL PROTECTED] TC# 1921 ACES# 5880