Wednesday, May 18, 2016

Wax on, Wax off

I wish the title were referring to actual wax.  Nope, still doing body finishing work.  Spray paint on, sand off most.  Fiberglass and epoxy on, sand off most.  Now glazing putty on, sand off. most  I have more than a few more rounds of sanding to go and spray paint to go.  It's going to pay off though when the parts releases easily from the mold and doesn't need much of any finishing work.

Wax on (glazing)



Wax off (sanding)


Much more sanding to do.

4 comments:

Alan said...

Hey Dan, Sweet seat mold. How was the test coupon? My experience making composite seats in kayaks or canoes is that they always end up more flexible than I thought they'd be and I end up adding local reinforcement but yours looks to have a lot more egg-shellyness going on so I suspect with the soric core and extra Glass on the edges it'll be pretty solid. So...test flight next week right? Lol

Alan said...

Btw, here's a totally different solution, aluminum bomber seat. You'd just need to buy a beading machine, tig welder, fancy riveting tool and probably some other very necessary additions to the average garage workshop. :) https://youtu.be/2PNl7QwURPs

burnt said...

Hey Alan!
The test coupon was 1.4oz + three 6oz + 2mm Soric XF + two 6oz. It feels nice for a 2.5in square. I can tell where the all-bias layers are unbalanced on the coupon, so I made sure to balance the cloth on the actual seat layup (which was bias + 0-90 + Soric + 0-90 + bias). On your comment about always feeling flimsy, most layups I make up off the cuff feel the same way, erring on the side of not enough thickness. Given that, I beefed up and balanced my layup figuring I'll make another if it's crazy overkill, and at least be able to use this one in the meantime.
I came across that exact beading tutorial video once a while ago! Great lessons. If I had a welder, so many of the Goat joints would have been welded instead of bolted :-) Probably would save 10 or more pounds of bolt weight too... should have weighed the box of bolts before putting them all into the plane because it was WAY heavier than expected.
Weird to make something this large. Hard to consider how many boats you have built...
Dan

burnt said...

Alan,
After letting the seat cure for a week and mounting it today, I think you'd have great luck with the Soric and balanced 18oz layup. The Soric is great stuff even using it inappropriately in a wet layup rather than a resin infusion. That additional thickness comes in one quick layer, and with a boat, you're not as concerned with the additional weight. I'll stick by the suggestion to balance the layup, which you can do with just two layers.
Dan

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