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Adjustable Standing Desk

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Project by brentmore posted 02-19-2014 09:59 PM 1148 views 2 times favorited 13 comments Add to Favorites Watch

Between working, watching TV, and driving, we spend something like half of our waking hours sitting down.

My wife’s job requires a lot of computer-based work. A few weeks ago she let me know that she wanted to spend less time sitting, so she took action. The next day I noticed her laptop perched precariously atop a stack of textbooks and empty cardboard boxes. It was a solution – though not very graceful.

Time for a custom solution provided by the engineers and designers at Brentmore Labs (me and Baxter the dog).

http://www.youtube.com/watch?v=D3il2SBxsl8

The legs are lifting columns made by a Danish company called LINAK. The company names comes from the fascinating device in them that’s responsible for all the motion: the linear actuator. Linear actuators can be found in adjustable beds, patient lifts, dental chairs, and lots of heavy duty applications. These particular actuators have a thrust rating of 700 Newtons each, which translares to a lift capacity of over 300lbs. There are also some anti-collision safety feature thanks to some built-in Hall effect sensors. I got the pair on the interwebs.

Sourced separately, but fitting perfectly, are the controller box (which is hidden away behind the stretcher), the lift controls located at the front of the desk and the metal feet.

The pièce de résistance, and part that qualifies this as “woodworking”, is the desktop. I had lots of 8/4 mahogany waiting to be chopped and glued. Unfortunately there were no pieces long enough that could be used for a desk, so I had to figure out how to fit lots of shorter pieces. I ended up using 8 2ft sections arranged in a brick-like pattern. The mahogany planed beautifully and glued securely. The finish is 1 coat of boiled linseed oil, 2 coats of dewaxed shellac and 4 coats of thinned poly.

-- Brent, http://www.brentmorelabs.com





13 comments so far

View CharlesA's profile

CharlesA

1519 posts in 464 days


#1 posted 02-19-2014 10:36 PM

Nice. Which Linak model is that?

-- "Man is the only animal which devours his own, for I can apply no milder term to the general prey of the rich on the poor." ~Thomas Jefferson

View brentmore's profile

brentmore

83 posts in 868 days


#2 posted 02-19-2014 10:42 PM

Hi Charles,

It’s the DL4.

-- Brent, http://www.brentmorelabs.com

View CharlesA's profile

CharlesA

1519 posts in 464 days


#3 posted 02-19-2014 10:46 PM

Two more questions: where did you buy it? (Google is not giving me much). Is the control box required (if not how would it adjust)? Perhaps that control box came with it.

-- "Man is the only animal which devours his own, for I can apply no milder term to the general prey of the rich on the poor." ~Thomas Jefferson

View brentmore's profile

brentmore

83 posts in 868 days


#4 posted 02-19-2014 10:57 PM

Charles,

Linak doesn’t sell directly to consumers – they supply furniture makers like Anthro & Steelcase, and to medical equipment makers for dentist chairs, lifts etc. It was a huge pain to get some, but I ended up finding a bunch on eBay.

They require a controller and you can go two routes. The first is to make a control box using a microcontroller, power supply and relay. Arduino, Beagleboard or Raspberry Pi could work. You could also search for a LINAK branded controller like the CBD4, CBD5, or CBD6, but they are very difficult to find (even tougher than the columns themselves). The arduino method works and it a fun experiment if you like to code, but in the end I got my hands on a matching LINAK controller. It was worth it to have everything in one package.

-- Brent, http://www.brentmorelabs.com

View CharlesA's profile

CharlesA

1519 posts in 464 days


#5 posted 02-19-2014 11:21 PM

Thanks.

-- "Man is the only animal which devours his own, for I can apply no milder term to the general prey of the rich on the poor." ~Thomas Jefferson

View Joe Lyddon's profile

Joe Lyddon

7755 posts in 2719 days


#6 posted 02-19-2014 11:27 PM

Brentmore!

Great looking table!

I have often wondered why pieces couldn’t be staggered & glued like you did for table tops, etc. instead of just for bowling alleys! LOL You have proven that YES, it can be done!

Thank you! It turned out GREAT!

I tried to play your video… It was unavailable… Do you have it still in a Private Mode, vs Public??

Thank you!

COOL solution for the problem!

-- Have Fun! Joe Lyddon - Alta Loma, CA USA - Home: http://www.WoodworkStuff.net ... My Small Gallery: http://www.ncwoodworker.net/pp/showgallery.php?ppuser=1389&cat=500"

View brentmore's profile

brentmore

83 posts in 868 days


#7 posted 02-20-2014 12:24 AM

Hey Joe,

Thanks for the comment! Here’s the link again: http://www.youtube.com/watch?v=D3il2SBxsl8

Not sure what went wrong – it’s not private. Let me know if it still doesn’t work.

-- Brent, http://www.brentmorelabs.com

View Joe Lyddon's profile

Joe Lyddon

7755 posts in 2719 days


#8 posted 02-20-2014 01:24 AM

Worked like a charm!

It’s Magic isn’t it… per your big G R I N !! LOL

Great job!

.

.

Yes… I saw you looking at the control buttons (hidden by the chair) ! LOL

Now, are you going to publish more pictures of the Magic lifting mechanism, etc. ? (big smile)

.

BTW, I think you can edit your original post and correct the clobbered youtube link… :)

What Model# of Device did you use? (there so many to choose from!)

-- Have Fun! Joe Lyddon - Alta Loma, CA USA - Home: http://www.WoodworkStuff.net ... My Small Gallery: http://www.ncwoodworker.net/pp/showgallery.php?ppuser=1389&cat=500"

View Rick's profile

Rick

6454 posts in 1699 days


#9 posted 02-20-2014 06:20 AM

Very Nice Work Indeed Brent! Thanks For Sharing!

Rick

-- COMMON SENSE Is Like Deodorant. The People Who need It Most, Never Use It.

View josh's profile

josh

901 posts in 1236 days


#10 posted 02-20-2014 08:00 PM

This give me idea. I thank you. Table is great.

-- Josh; Former Pennsylvanian, current Coloradan

View brentmore's profile

brentmore

83 posts in 868 days


#11 posted 02-20-2014 08:01 PM

Josh,

No problem – getting ideas is a huge reason why I come to LJ!

-- Brent, http://www.brentmorelabs.com

View swirt's profile

swirt

1945 posts in 1638 days


#12 posted 02-22-2014 04:58 AM

Very nice work. I like what you did with the wood AND the gizmos. I switched to a convertible desk a month or so ago and am very happy with the choice…. Mine is not as high tech as yours so of course so now I have desk envy.

Get your wife a good anti fatigue mat as it can be pretty tough on your feet. I have found it a necessity.

-- Galootish log blog, http://www.timberframe-tools.com

View brentmore's profile

brentmore

83 posts in 868 days


#13 posted 02-27-2014 03:26 AM

Thanks for the recommendation – we went out and picked up a nice anti fatigue mat for her and it’s working great!

-- Brent, http://www.brentmorelabs.com

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