12/29/2022
I finished this Sewing Desk project recently. It had to go up a tight staircase to the third floor, so it had to break down flat and use KD hardware (Knock-Down, think IKEA). Getting the melamine and top up those stairs was a real workout--good thing I had help!
What you can't see are the back folding shelf, six casters, and the four toggle-clamp hold-downs. A 16'-inch-wide shelf runs along the entire back length of the desk and folds up and locks into position for more surface for quilting and layout. The casters allow the desk to be rolled away from the wall so the shelf can be folded up. The hold-downs toggle down to keep the desk from moving.
For stability and heft, I made the top from a solid-core interior door slab, and painted it with white appliance (epoxy) paint for durability and sheen.
The sewing machine is raised and lowered using a hydraulic lift, adjusted for three positions: all the way up, to interface with the attachment you see in the Cubby Closeup below; with the top surface of the swingarm flush with the top of the desk; and all the way down. In the mid-position, a plastic insert mates with the machine; it had to be cut down to fit the contours of the machine, and a 1/4'-deep "cup" was routed out to make the plastic insert flush with the desktop. This cup was extended to accommodate a lid that fills in the hole in the desktop when the machine is all the way down; when not in use, the lid fits under the desk and rests on the top-most center-shelf. The pedal control can rest on the lower center-shelf when not in use or when the desk is being rolled back and forth.