The photo above is a Twiggy Mk1 from France

This presentation documents the construction of a modified version of Lock Crowther's famous Twiggy Mk 2 trimaran

Thursday, May 15, 2014

Mainhull frame tops and bottoms dry fitted

bottom and top of frame 6 scarf dry fitted

edge view of of frame 6 scarf dry fitted



  • the scarf joints were dry fitted and the alignment carefully confirmed for each frame
  • 1/4" pilot holes were then drilled through the overlapping portion to make future alignment easy and accurate 
  • just insert 1/4" drill bits or dowels to align, then clamp and let the epoxy cure 
  • only the bottom sections of the mainhull frames will be set up on the strongback, so that hull construction can fit within the 6' - 6" headroom of the shop
  • the top portions of the frames will be scarfed on after the hull is completed up to the gunnel, rolled upright, and moved out of the shop 

Thursday, May 8, 2014

Mainhull frame top section scarfs

here is the scarf on the top section of frame 6

the scarf only extends across the middle portion where the bottom section will overlap