The spar dam is an interesting topic when searching what other builders have done. I can see why some used dry wall screws to hold it on. The Paulk workbenches have nice 3/4" peg or clamping holes that could be used for rigging the spar in place and providing extra support to keep the dam from flexing out when doing the lay ups, but all that rigging would probably get in the way. Originally I used about a 4" wide strip but found it easily flexed back. Cutting it down to about 1.5" reduced the amount of flex quite a lot. Box tape is on the trough side of the dam.
Some builders filled the little corner gap with flox to keep the epoxy from running down the side, but I think I'll try a mix of mostly fast and a little slow hardener on the first tape so it will set up more quickly to seal the little crack and hopefully keep much epoxy from running down the side.
You can see where the original dam's edge was from the old bondo spots and how short it is now.
A power outage last night put a damper on doing much. Maybe Wednesday night the top spar will get done. Warmer weather is coming!
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