Den window bench
Last Modified Jan 13, 2024

At the end of 2023, I finally got around to building a window bench for the den. It's been in my plan for over a year, but I kept debating built-in versus smaller and movable. I eventually chose the latter.

When I build something like this, which is essentially a utility piece versus a decorative piece, I tend toward overkill on strength. If I'm going to put time into it, I want it to be built to last. I used oak 4x4s and oak 2x4s for the base. The top is 1 3/8" thick oak butcherblock (a countertop slab), 24"x60". All overkill, but it's stout and substantial. One of the goals was to be able to take a catnap on it, or accomodate a large dog. It should never move without intent.

The wall for the center window of the den is 63" wide. With the 3/4" trim on the top, the bench is 61 1/2" inches wide and 25 1/2" deep. Its total height is 19 5/8", which puts it almost exactly the height of the window sill. I'd have gone a little shorter, but the bench will traverse the only HVAC register in the room. I want a reasonable amount of space for the register air flow, whether assisted later by a fan or not. The left side has 8U of rack space for Middle Atlantic TD drawers, and possibly a fan panel.

Like a chair or desk, it's going to get a lot of wear and tear. Preventing that wear and tear mostly means rounded edges where it's expected to be bumped by vacuums, feet, knees, etc. For a sitting bench, it's pretty much the whole thing. So I've kept the design minimalist; all edges are just getting roundovers. The finish is shellac sanding sealer, then General Finishes Colonial Maple gel stain, then a sealing coat of wax-free shellac, then multiple coats of wipe-on polyurethane (3 to 5 gloss coats, 2 satin coats).

Given how heavy it is fully assembled, I designed it such that it can be disaasembled into three pieces: the top, the right leg assembly, and the left rack assembly (4 legs, 7 stretchers glued together as one piece). The top has threaded inserts installed in the bottom for 5/16"-18 bolts, 8 on total. Each of the 4 top stretchers has a pair of countersunk holes for 3" long bolts to thread into the inserts in the top. This is the same as I used for the desks, though a different top material (hence different inserts intended for hardwood).

The second element to the weight is the feet. I don't want a huge point load, and I want something slippery on the porcelain floor so the bench can be moved despite its mass. In some applications I'd use UHMW, but here I need more dimensional stability and ease of machining. So like the desks, I used black acetal. It's much more expensive than UHMW, but here it's the right material. I've been thrilled with it on the desk feet, and the desk feet are bearing a lot more weight.


Den Diary