Do a little jig

Well, not exactly dancing in the workshop, but we did make a drilling jig today and got very nice results with the net lashing points on the beam edges. These slots cut in to the long tubes will allow us to loop small lashing line around a skinny rod inside the big tube, creating anchor points for the nets every seven inches along the beams, the float decks, and along the sides of the main hull.

First up was a practice piece to get the depth right. Cut on the left didn’t take enough of a bite…

The drilling jig is simply some hardwood pieces screwed together and carefully drill pressed. It’s enough to get the pilot bit started on the actual work surface, then set the jig aside and finish each cut.


These were cut using a one-inch hole saw (the wood-cutting version burned up quickly – needed to upgrade for metal-cut bits). The outer edges point in, following the circle, so another straight cut is needed next.


Note the little paper pattern in this photo – that got marked on each hole with about 35 degree legs so the lashing line can run out at angles and not rub.

Got both leading edges of the two being-worked beams done. Next is some fine-finish work around these cuts and two of the beams will finally be complete.

And while glue was drying – back to the hatches. Decided to beef up the locking area (it’s also the grab handle) with sturdy aluminum plates. That’s another pound or so added to the boat, but intruder security is the one place we don’t mind taking a small hit on performance wise. It’s a safe house before it’s a race boat.


And the framing for the aft cabin hatch is coming along. Style is matching the main companionway area. This work allows procrastination on the hard dodger design decisions. :)


2 thoughts on “Do a little jig

  1. Well, your down to the time eating and fine work. BTW, what Epoxy brand are you using ? I have been using MASS for two years and love the options and strength rating. I see too that we use the same filler material, shows up well.



    • Epoxy is from Applied Poleramic in Benicia, CA. They do large volumes for the aircraft industry these days. And they supplied the F25C epoxy to Colorado Composites, so at least 80 fboats have been built with it. They’re great to me – as long as I give them a week’s notice, they save some of the good stuff in five gallon buckets at VERY reasonable pricing.


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