bulk up resin

Discussion in 'Materials' started by grp.boat, Jan 9, 2007.

  1. grp.boat
    Joined: Nov 2005
    Posts: 47
    Likes: 0, Points: 6, Legacy Rep: 10
    Location: uk

    grp.boat Junior Member

    what is the best additive to add to resin for bulking it up for sanding?
     
  2. fiberglass jack
    Joined: Dec 2005
    Posts: 463
    Likes: 16, Points: 0, Legacy Rep: 95
    Location: toronto

    fiberglass jack Senior Member

    what is the resin going to be ( above or below water) micro balloons makes the easiest to sand but will sag , to stop this add 10 to 15% cabosil (fumed silaca) this will stiffin the paste add to much and it will be a ***** to sand
     
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