Body filler is a necessary part of any classic C10 restoration, but not all fillers are created equal. The old Bondo debate rages on — but what does the pro body shop world actually use and why?
This thread covers polyester vs epoxy fillers, how to properly prep metal before filling, mixing ratios and working time, and finishing techniques. We also discuss the role of filler vs lead and what thickness is too thick.
For surface rust treatment before filler application, the 3M Weld-Thru Coating II is a great choice to protect metal in areas you’re working around welded patches before blocking.
What’s your preferred body filler brand and mixing technique for classic truck restoration?