The Scarfing Jig

The main problem with the scarfing jig, admittedly, was the weight of the saw. When this was combined with the low level at which it was attached to the lofting table, the result was unavoidable bumps. I actually had to be on my knees to use the jig. So the scarf joints were less than perfect.

 
The jig holds the ply under a batten while the saw is passed across it at an angle determined by the manufacture of the jig.

The smoothness of the cut depends on the rigidity of the saw.

Here, some unevenness is seen in the scarf.

The joint is strong enough, but there is exposed epoxy ruining a continuous texture.

Possible solutions include a lighter saw, but the reach of a 235 mm. blade is needed to cut the 9 mm. ply; the jig might be better used on a higher table, instead of the lofting table; and the Gougeon Bros. Scarfer would be a serious contender for an economical alternative. None of this would be a problem in a hull which was destined to be painted, but a clear finish is impossible.

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