So, since I don't have a vacuum press or a large steam box, I had to build a clamping jig to assist in creating the bent lamination sides for the enclosure. And since it's a build thread, I'm gonna include how I made the jig.
So, to begin, the curvature of the sides is an arc created by an 8ft diameter circle. So I needed a jig over 4ft long, and configured to have exactly 48" between the centers.
Once that was done, I needed to cobble together a setup that would position my blank appropriately to successfully route the curve.
Curve routed. This will be the template for the top/bottom of the enclosure + a primary component of the clamping jig.
For the clamping jig, I need several of these curves to create a base on which the plywood can be lain. So, rough sized blanks were cut on the table saw, with the majority of the waste removed via jigsaw (the bandsaw is next on the equipment purchase list). Then, my handy template tape, careful alignment, and some time spent on the router table.
Next, I needed a series of clamping cauls, so I planed some 2x2's to give me consistent thickness and flat faces. To avoid moisture imbalance, all sides were planed. I then rounded over the edges and drilled three sets of holes in each caul for threading.
And now, how it all comes together. Tie down straps will be used to apply sufficient clamping force across the arrangement of cauls to ensure a solid, void-free glue bond between each ply.
Next steps are to cut the luan to rough size and glue up the side laminations.