That’s a nice looking board. I like the fact that you are going without the glass. A thin finish really makes the board look feel more natural. Let us know how well your sealing mixture works out. I used Marine Spar Varnish on my board, and it is holding up nicely. I’m also curious to know how you plan on attaching the fins.
I decided not to glass to keep weight down but also to make it as green as possible. the only non eco friendly thing is the epoxy glue. since ive done this glue up ive sourced a plant based epoxy glue/resin so the next one i make will be 100% plant based.
i had one of TW’s alaias for a while and it was just sealed with linseed oil. it was fine and just needed to be oiled every few weeks. if it got mouldy i just sanded it back a bit and re-oiled.
im applying the linseed at the moment. once ive done a few coats ill be melting and filtering some beeswax and pine resin and painting it on a thin coat. the wood should absord it a bit and there will also be an outer protective layer. i figured i better put a vent/drain plug in just in case i get some water seeping thourgh, but i think its unlikey if i do it right.
regarding the fins im putting future boxes in. Ive chambered where they are going so will need to put some inserts in or use some pour foam to fill the chambers.
great build thead. looks very similar to my first one… i glassed mine as i was not confident in my woodworking skills. but im building 4 more over the next few weeks inc a 9’6" log . i hope to finish them without glass also.