I made this box for steam bending the canoe parts. It's 8 feet long by 1 foot square. The ends are 3/4" plywood and the sides are foil faced 1" insulation board. I'm hoping the board is good for 212 F. Eight feet long is long enough to steam the gunwales one end at a time.
I cut 4 stem blanks to bend and made a compression strap from nylon webbing and scrap lumber. I idea behind the compression strap is to force the outer part of the bent wood to be the neutral bend axis and the rest of the cross section to be in compression. The wood will break if it is in tension during the bending process.
I cut the blank for the replacement thwart using the good one as a pattern. Once I get the profile smoothed up, I'll round off the edges with the router and finish shaping it on the spindle sander.
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