my local machine shop bakes them in an oven used by most machine shops to bake grease and grime dry and then after cooling puts them in a bead blaster which knocks off" all" of the dried grease and grime of completely , leaving a nice clean metal finish with no residue or sandblasted finish. a set usually runs about $100.00 .

Last edited by Little Detroit; 04/28/19 09:23 AM.