Thinning Bondo

Over time body fillers can become hard and difficult to work with, or you may want to thin out your filler to apply a skim coat over a large area. Mark Simpson explains why many body fillers get firm over time and how thinning bondo can return it to a more workable condition.

3 Responses to “Thinning Bondo”

1. nomo0401 January 10th, 2020

   ?acetone?

   Reply

2. Thomas Kiser August 31st, 2017

   Does this also work on body putty also?

   Reply

   • Customer Service September 6th, 2017

     Hello Thomas,

     This method will work on some “2-Part Putties” that use a hardener. but it will not work on “air-dry” autobody putty.

     Thanks,
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