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Bondo molding fish

Discussion in 'Molding and Casting' started by Beltonbanger, Jun 22, 2017.

  1. I have tried several times and keep cooking my fish. Can you cool the bondo down when it kicks or am I just using too much hardener? Any help would be appreciated.
  2. JHardman

    JHardman Active Member

    Most of the time you can expect to cook the fish by molding with bondo. You may be able to reduce the effects of the thermal damage by using less hardner but it will still heat some. pouring a thin detail layer of bondo and resin and letting that kick completely before building it up in thin layers may help some. I have been able to skin mount a few warm water species this way.I have never have had any success salvaging any trout this way however. If I am pouring a bondo mold I just expect to work up the reproduction and sacrifice the skin. If I want both I will always pour a silicone mold, I have heard of folks having great success with alginate and it won't harm the skin, it just hasn't ever worked for me. If you must use Bondo for the Mold then I would pour it thin, reduce the hardener and try to only pour when it is cool out, early mornings ect. The resin won't set near as fast as your are used to but it will still set and it won't build as much heat.

  3. Cory

    Cory Keep an eye on quality!

    As JHardman said, the "secret" is in the first pour of the fish. Keep it thin and kick it light! I have waited up to an hour before being able to add layers to the first side of the fish. You can kick it just a bit harder on the second side of the fish, but be careful if you are wanting to salvage the fish for a skin mount. The problem i find with bondo is the fact that it will remove scales when demolding, hence, making a skin mount fish tougher, depending on the damage.
  4. Thanks!!! This is great info!
  5. srholmes30

    srholmes30 Living each and every day

    Thank's great info
  6. JL

    JL Taxidermist for 64 years

    Never could save the fish skin molded with Bondo. Pour a half mold with Alginate and make the half repro with Bondo then repeat the process , or use silicone and a mother mold.