DIY adjustable height desk: By John Streeton Stile


First I reveiwed the stand-up desk industry:

Desk Capacity Height Image
Linak not sure not sure
biomorph level2 EL2 260 lbs 26-53"
MultiTable 130 lbs 27-47
Ergonomic Dual Surface 500 lbs 26-40"
GeekDesk Max 335 lbs 23-49"
Steelcase Series 5 220 lbs 25-52"
NextDesk Tara 315 lbs 24-50"
UpDesk 300 lbs 26-42"
Anthro Elevate II 150 lbs 28-47"
Human Solution UpLift 900 335 lbs 24-50"
Humanscale Float 130 lbs 27-47”

My desk is inspired by the designs of Biomorph I really like their style, but $1700 is out of my price range. They would not sell just a desk top, so I reverse engineered the whole thing. In the end, I found plywood, tools, materials, and legs for about $1000, and can create more for less.

AreaDetails
Reference:
Biomorph uses furniture grade blond Maple plywood.
Edges are bullnosed and chamfered reveal facing the user.
Finish is a baked-on catalyzed clear lacquer, semi-matte, non-glare finish
Thickness is 3/4" or 1".
Legs use linear actuators, sometimes from Linak.
Shape: 72" x 35"-31"

      
Design:


1. Notches at the top and sides are used for cable runs and mounting lamps, allowing the desk to press against the wall.
2. The 5 holes along the top are for 1" round tube rig, used for mounting monitor, lamp, and speaker.
3. The keyboard platform slides under the main surface on tracks, and can be tilted and elivated..
Link to construction photos
      
Wood:
I wanted a 4x8 Sheet of maple blond, 3/4" or 1", A1, bookmatched, plain-sliced, Veneer Core
MacBeth Hard Wood in Berkeley only carries Appleply Maple, 3/4", C3, rotary cut for $111.90.
They will order A1 if I buy 10 sheets.
I bought it, but would not do it again.
Moore Newton in San Leandro is who I would use next time. 
      
Edge:
First draw lines and arch. For the arc I had to be creative:
  
  
Next cut the straight edges with a circular saw.
  
Next use jigsaw to cut the notches and arcs.
  
Next clean up edges with a straight router bit.
  
Next round all edges with the quarter round bit on both sides.
  
Last, cut the chamfer edge along the arc, leaving the reveal face up.
  

3 router bits and 2HP router
Left:45 degree Chamfer Bit, 1/4" shank
Center:1/4" Straight Bit, 1/4" shank
Right:5/8" Corner Round, 1/4" shank

      
Finish:
This step took the most time and effort.
2 gallons Sherwin Williams Pre-cat CAB Acrylic Lacquer CC-F23 (Dull Rubbed Effect, Part Number T75F18)
Benefit: durable, water white, less toxic off-gassing

small air compressoer and Harbor Freight Central Pneumatic Paint Spray Gun:
   Siphon Tube:   1/4"
   Operating PSI: 20-55
   Nozzle Size:   0x082"
   Nozzle Type:   Exterminal Mix  
   Cup Capacity:  1 Qt
   Weight:        2.71 lbs
My Painting Booth:


I followed the advice from http://www.woodcentral.com/russ/finish11.shtml

  1. Sand:
    stages: 60, 80>100, 120, 150, 180, 220, 250, 280, 320, and stop at 400.
    Vaccumme up all the dust at each grit change.
    Work out imperfections at 60 grit.
    
  2. Brush on a sealer layer
       coat of either Deft
        -or- 
       coat of 70/30 lacquer/thinner 
        -or- 
       light linseed oil on a cloth
     Let it sit for no more than a few seconds, 
     Wipe it all off with a paper towel. 
     Until the wood surface is smooth and dry. 
     
  3. Let sit for several days, 
     Some wood will start to stand after a few days, and the surface becomes rough.
     Sand lightly with 600-grit 
  4. Spray Gun:
     Adjust compressor air-regulator to 30PSI.
     Fill up the spray gun with lacquer that has been thinned to no more than about 30% thinner
     Practice on scrap to find correct balance viscosity and air pressure. 
     Up to 50/50 mixture of thinner can be used.
     if orange peal, reduce pressure.
     if bulshing, add retarding-thinner.
     avoid runs "fisheye" but don't try to fix it.
     Brush: 
       1" diameter pony-hair mop brush available from Craft Supplies for about $15.00, 
       1" wide badger-hair brush from Woodcraft is another good brush for about the same price. 
       Clean the brush with thinner after using, 
       wrap it in a piece of grocery-bag paper to keep the dust away. 
       Soak it in thinner again before using. 
        Sherwin Williams CAB Acrylic or similar lacquer, thin it with 25% "retarding thinner."
       Or, use clear Deft® straight from the can. 
  5. Apply a wet coat.
     Wait three minutes and shoot another wet coat. 
     Wait three minutes and shoot another wet coat. 
     Wait at least 2-hours
     
  6. Repeat step 5 three more times (total of 9 coats).
  7. Thin the lacquer to 2/1 ratio of thinner to lacquer.
     Apply a wet coat.
     Wait three minutes and shoot another wet coat. 
     Wait at least 2 days.
     I brush painted one last really think coat 1:2 lacquer to thinner.
     A lot of lacquer did not end up on the desk due to my spray technique(2 gallons should have made a thicker finish).
     
  8. Buff lightly to remove dust, bugs, over-spray, runs, etc. 
  9. Wet sand with 400, 600, ... to 1000, 1500, and 2000, all lubricated with mineral spirits. 
     
 10. Polish with 4F Pumice that is lubricated with mineral spirits.  
 11. Polish the surface with Rottenstone, lubricated with mineral spirits. 
 12. Polish one more time with Rottenstone. 
 NOTE1: The use of mineral spirits reduced the the degassing smell by half.
 NOTE2: Origninal directions called for 0000 steel wool, but I did not use it.
Legs:

Linak Deskline Lifting Column Linear Actuator
I found the parts on ebay ($546 + $139 shipping)
Distance between legs: 54"
Height 25.5" to 41.5"
Part Price Image
Lifting column$129.00 x2
Control box$155.00 x1
Desk Control Remote$45.00 x1
Crossbar + wire tray$70.00 x1
Control cable to leg$9.00 x2
Keyboard Arm:
Gemini Arm Slide Kit (Model 2421-22Tg - $238)
Gemini Arm (Model# 3420-27 or Model# 3420-31)
Hole Grommits: 1" Black Desk Grommet
Attach legs to top:
      1/4-20 threaded inserts
      20x for the legs
      16x keyboard tray
      
      
      If I make another desk, I will used these Brass Slot drive threaded inserts
      
Chairs
Researching Sit Stand Chairs, Stools, Ball Chairs, Drafting Chairs
- Capisco Chair kinda expensive
- Humanscale but need back support
- Ergon 3 Drafting Chair
- Office Master WS15 Sit to Stand Work Stool
- Herman Miller is just a ridiculous cost.
Diffrient World  Humanscale
Berkeley Outlet is awesome when they have stuff, but not the days I went.
 181.61 - Safco Metro Drafting Chair (heigh range 23" to 33") 
 116.97 - Boss Drafting Chair in Blue - B1690-BE (heigh range 26"-31") 
 186.88 - Safco Vue Extended Height Mesh Chair Item#: HN-SPC730 (heigh range 23" to 33") 
 199.00 - EUROTECH Apollo Mesh Back Drafting Stool (heigh range 22-1/2-30")
Finaly: from Craigslist, a $50.00  Harwick Ergonomic Adjustable Drafting Chair Model 6058C-D

The back is higher than I'd like, but it is a cushy chair.  Might look for a stiffer one.
If I where to get a chari today, it would be the Safco Metro Model 3442BL
      
Standing Mat WellnessMats Original Anti-Fatigue Floor Mat
Power Belkin BV112234-10 3996 Joule 12 Outlet Surge Protector with 10ft Cord
mounted under desk
Speakers Klipsch ProMedia GMX
Lamp Zbar
Network Mounted a Cisco SG100D-05-NA 5 Port Gigabit Switch under the desk
Rigging
 
Using Aluminum schedule 40 pipe (od of 1.05).
5x Hollaender 45-5 Square Floor Flange Aluminum Magnesium 3/4" IPS (1.09" ID) 

2x Hollaender 30C-5 Nu-Rail Adj. Swivel Aluminum Magnesium 3/4" IPS (1.09" ID) 

4x Hollaender 5E-5 Tee-E Aluminum Magnesium 3/4" IPS (1.09" ID) 

2x Aluminum 6061-T6 Pipe Schedule 40 3/4" Nominal, 0.824" ID, 1.05" OD, 0.11" Wall, 72" Length 
Pole Mount Double Arm Bracket for LCD Monitor VESA 75/100 Works w/Speaker Stands

Mounted under to keep the surface uncluttered

Current