Desks
Last Modified Oct 4, 2022

Much of what I need in a desk is pretty simple. There's the usual critical criteria: size. I've been using a huge Middle Atlantic desk for about 20 years. It has 8U of rack space, is 84" wide and about 40" total depth. The overbridge is huge. This desk is intended as an edit center in a studio (audio or video). Functionally, I've been very happy with it. The price for one today is pretty absurd: $4200.

However, it's ugly in living space. I also don't need it in the den, since I've consolidated my audio gear to a 1U audio device, a 1U equalizer and a 1U Behringer Composer PRO XL. The equalizer and the Composer PRO XL are only used for microphones, which most of the time are ModMic Uni headphone-mounted microphones (for audio calls and meetings). These devices are being relocated to a bookshelf unit I created to sit atop two identical desks.

I still need desk depth and width. I use a 38" monitor, and I do have small speakers. I also like having somewhere to stash my keyboard and trackpad, which I don't have with the Middle Atlantic ELUR. In other words, I need an overbridge.

Durability is important to me. I don't want a fragile finish on the top that would be marred by cup rings, etc. But I also don't want laminate. My choice here is marble-look porcelain. It's manmade (unlike real stone), it's very durable, it's impervious to moisture, and essentially stainproof and scratchproof (PEI rating of 5). Despite being manmade, it feels much more natural to me than laminate. The porcelain will be trimmed by hardwood.

I also need reasonable strength. There are times when I have a beefy watercooled workstation on my desk (such as the Threadripper machine in my office right now). And since I want to be able to slide it a bit when cleaning the den, it can't be flimsy.

Speaking of sliding around, the den floor is porcelain. It will tolerate considerable abuse. But I don't want the abuse the porcelain would exert on bare wood, so I've used black acetal for the feet. It's dense, strong and slippery. It's also really easy to machine with woodworking tools.

I work alone. Hence I can't build something I can't move from the garage or basement to the den. I need to be able to remove the top from the base and also disassemble the base itself.

Below are some screenshots from my design in SketchUp. There's a scary variety of joinery here, and most of it is of the novice variety. Pocket hole screws and dowels for permanent attachments. The feet are bolted into the bottom of the legs via threaded inserts. The rear of the base is attached to the sides of the base via locating pins and leaded bronze flanged bearings to align it and dowel nuts and bolts to fasten it. The base is very strong, and all solid oak.

There are countersunk vertical holes in the crossmembers that will allow me to use bolts and threaded inserts to attach the top. That's why there are larger gaps between some of the stiles (so I can use a ratchet on the bolts). There are 4 of these in the rear crossmember and 2 in each of the side crossmembers.

There are some pass-through holes in the top rear crossmember. I don't really have immediate plans for them, but it's good to have spots to hold up cables.

In x-ray, you can see the various bits of joinery.


Desks to-do

Overbridges

Second Overbridge

Task Done?

Right leg assembly
Cut two 6.5" long 2x4 pieces for legs.
Cut two 7.5" long 1x2 pieces for stringers.
Cut two 2.25" long 1x2 pieces for stiles.
Mark the 4 dowel holes in each of the 2.25" long 1x2 pieces (8 holes).
Drill the 4 dowel holes in each of the 2.25" long 1x2 pieces (8 holes).
Mark the 4 dowel holes in each of the 7.5" long 1x2 pieces (8 holes).
Drill the 4 dowel holes in each of the 7.5" long 1x2 pieces (8 holes).
Route the 4 long edges of the 2.25" long 1x2 pieces.
Route the 2 long edges of one of the 7.5" long 1x2 pieces (opposite the dowel holes).
Assemble the side panel with dowels and glue.
Mark the front right leg dowel holes.
Drill the front right leg dowel holes.
Mark the rear right leg dowel holes.
Drill the rear right leg dowel holes.
Assemble the right leg assembly with dowels and glue.

Left leg assembly
Cut two 6.5" long 2x4 pieces for legs.
Cut two 7.5" long 1x2 pieces for stringers.
Cut two 2.25" long 1x2 pieces for stiles.
Mark the 4 dowel holes in each of the 2.25" long 1x2 pieces (8 holes).
Drill the 4 dowel holes in each of the 2.25" long 1x2 pieces (8 holes).
Mark the 4 dowel holes in each of the 7.5" long 1x2 pieces (8 holes).
Drill the 4 dowel holes in each of the 7.5" long 1x2 pieces (8 holes).
Route the 4 long edges of the 2.25" long 1x2 pieces.
Route the 2 long edges of one of the 7.5" long 1x2 pieces (opposite the dowel holes).
Assemble the side panel with dowels and glue.
Mark the front left leg dowel holes.
Drill the front left leg dowel holes.
Route 3 long edges of the front left leg.
Mark the rear left leg dowel holes.
Drill the rear left leg dowel holes.
Route 3 long edges of the rear left leg.
Assemble the left leg assembly with dowels and glue.

Rear panel and shelf assembly
Cut six 2.25" long 1x2 pieces.
Cut two 7.5" long 1x2 pieces.
Cut one 24" long 1x2 piece.
Cut 12.25" x 24" shelf from 3/4" edge-glued oak.
Mark the 4 dowel holes in each of the 2.25" long 1x2 pieces (24 holes).
Drill the 4 dowel holes in each of the 2.25" long 1x2 pieces (24 holes).
Mark for the 12 dowel holes in the 24" long 1x2.
Drill the 12 dowel holes in the 24" long 1x2.
Route 4 edges of 4 of the 2.25" long 1x2 pieces.
Route 2 edges of the remaining two 2.25" long 1x2 pieces.
Route two long edges of the 24" long 1x2 piece (opposite the dowel holes).
Mark and drill the pocket holes in the 12.25" x 24" shelf.
Mark and drill the dowel holes in the 7.5" long 1x2 rear pieces (12 holes).
Mark and drill the pocket holes in the rear 1x2 pieces.
Attach the 24" 1x2 to the rear of the shelf with Titebond III and pocket hole screws.
Install the 2.25" 1x2s in the rear 1x2 with dowels and glue.
Attach the rear 7.5" 1x2s to the 2.25" 1x2s with dowels and glue.

Final base assembly
Attach the rear panel and shelf to the right leg assembly with Titebond III and pocket hole screws.
Attach the rear panel and shelf to the left leg assembly with Titebond III and pocket hole screws.
Plug the pocket holes.

Finishing the base
Cut/sand the pocket hole plugs flush.
Sand the entire base.
Seal the entire base with SealCoat 50/50 with denatured alcohol.
Lightly sand the entire base.
Stain the entire base.
Seal the entire base with dewaxed shellac.
Sand the entire base with 400 grit.
Wipe on 6 coats of polyurethane, sand as needed between coats.

Top assembly
Cut 14.5" x 46.5" piece of 3/4" oak plywood.
Cut 11" x 43" piece of 3/8" plywood.
Cut 10.75" x 42.875" piece of porcelain.
Cut 1x3s for the top border.
Mark and drill holes for 1/4" dowels in top border end pieces.
Using dowel markers, mark the location of dowel holes in top border front and back pieces.
Drill dowel holes in top border front and back pieces.
Assemble top border with dowels and glue. Clamp for a few hours.
Align the 3/4" oak plywood on the oak border frame. Clamp in place and drill countersink and pilot holes for screws.
Glue and screw the oak plywood to the oak border frame.
Align the 3/4" oak plywood on the base. Trace the base outline on the bottom of the plywood.
Measure and cut solid oak pieces to cover edge of 3/4" oak plywood, ripped a little wide.
Attach solid oak pieces to cover edge of 3/4" oak plywood with glue and pin nails.
Trim the oak trim pieces flush with the border frame using flush-cut bit in router.
Route the top frame with 3/16" roundover bit.
Sand the top frame.
Pre-drill countersink holes in 3/8 plywood (38 holes).
Glue and screw the 3/8" plywood to the 3/4" oak plywood.
Seal the top frame and 3/8" plywood with SealCoat.
Drill pilot holes from the underside for #9 construction screws that will be used to hold the top to the base, using a drill guide.
Stain the underside of the top.
Lightly sand the top frame.
Stain the top frame.
Spray the top frame with a coat of dewaxed shellac.
Lightly sand the top frame.
Wipe 3 coats of polyurethane on top frame, lightly sand with 400 grit or scotchbrite between coats as needed.
Wipe 3 more coats of polyurethane on top frame, lightly sand with 400 grit between coats as needed.

Attach top to base
Position top on base, carefully align. Clamp in place.
Using the holes I drilled in the top as guides, drill pilot holes in the base for screws (6 holes).
Remove top from base, chisel any swarf from surfaces around holes.
Apply bead of Loctite PL Premium to top of base.
Place top on base and install screws.
Clamp base to top.
A couple of hours later, clean up any adhesive that squeezed out of joints.

Install porcelain
Mist the plywood with water using spray bottle, then blot dry with microfiber. SikaBond adhesive is a moisture-cure urethane, and given the large area being covered, it will take a very long time to cure if no moisture is present.
Dispense SikaBond onto 3/8" plywood. Spread with V-notched spreader. This will probably take more than one 29 oz. cartridges but less than two.
Lay porcelain insert in top. Using scrap 2x6, tap level with dead blow hammer.
Allow several days for SikaBond to cure.
Grout between the porcelain insert and the frame.

Desk parts

Note that I did not include pocket hole screws, pocket hole plugs or other wood screws in the parts list. While they're not free, I think of them as consumables (like glue).

Desk parts by Category

wood

porcelain

hardware

Totals by Category


Desk parts by Vendor

www.menards.com

www.flooranddecor.com

www.mcmaster.com

Totals by Vendor


Desk parts by Date

January 23, 2021

November 14, 2021

November 22, 2021

December 16, 2021

December 19, 2021

January 15, 2022

Someday

Totals by Date


Den Diary