Plywood for mould making

Discussion in 'Materials' started by BigYeet, May 8, 2020.

  1. BigYeet
    Joined: Feb 2020
    Posts: 12
    Likes: 0, Points: 1
    Location: NZ

    BigYeet Big yeet

    I am making a mould for a Moth and I am wondering what thicness plywood to use to go across the bulkheads to make the shape. I have tryied using 3mm ply but it was warping inbtween the bulkheads and not taking the shape of the hull properly. The bulkheads are spaced from 50 - 10cm apart and there is a fair bit of curve in the hull. Any suggestions for wood thicness would be greatly apreciated.
  2. Rumars
    Joined: Mar 2013
    Posts: 1,701
    Likes: 1,002, Points: 113, Legacy Rep: 39
    Location: Germany

    Rumars Senior Member

    Strip plank the mould with some cheap pine screwed to the bulkheads. Whatever thickness is cheapest. Countersink the screws, then you can fair without hitting them, then use bondo for the final finish.
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