Fender flare/liner trimming

Ive searched and couldn't find out what tool would be best to trim my stock plastic fender flares and fender liner? Any suggestions? Thanks in advance.

 

I used a dremel or tin snips.

 

The liners are very thin and can easily be trimmed with just a razor knife. The fender flares you want to use a tool you are very confident with and that will leave a nice clean edge. If you want a clean cut I would not use a Drexel. I would suggest covering the area of the flare you are going to cut with masking tape and cutting it with a jig saw or reciprocating air saw. Your best bet to cut plastic cleanly is to use a larger tooth blade IE: not a fine tooth metal blade. A wood blade will cut plastic cleaner if you run the jig saw slow or just feather the trigger. The trick is to keep the blade and the plastic cool so it cuts a nice clean edge so if you run the saw at slow speed it works much better.

 

Thank you for the advice. Got some minor trimming next on my to do list.