Author Topic: Fun with magnets  (Read 2195 times)

0 Members and 1 Guest are viewing this topic.

Offline Edward A Reno III

  • Posts: 3033
Fun with magnets
« on: May 19, 2017, 07:17 AM »
So I'm finishing up the set of base cabinets for an entertainment center I was commissioned to build, and just wanted to share the solution I cam up with for the center unit, which will house the flat screen TV lift mechanism.

The specs called for a faux double door front panel that was easily removable so that the lift mechanism/TV could be installed, but the hardware for making it removable had to be hidden and couldn't project far into the cavity where the lift would be.

I had never tried this before, but I decided to go with magnets.

Although it wasn't completely necessary (since the edge of the carcasse would be hidden by the panel), I decided to get tricky and embed one set of magnets in the hardwood edge banding on the front edge of the case.  This involved doing a double line of white oak edging strips, the first one more or less the exact thickness of the magnets (around 1/8" thick), and the second basically the same size -- thin enough to allow the magnetic action to work through the wood and a bit extra to allow me to waste away a bit with the jointer plane to make the edge straight and smooth.

I drilled through holes in the first strip in which the magnets would sit -- the magnets where 12mm diameter, so I made the center point 5/16" from the inside of the case -- and then laid that strip with some glue on the edge along with the magnets:

263543-0

Covered it with the second strip of edging and glued it up as per normal.  In total I embedded 12 of these magnets around the edge of the 47" x 30 1/2" case.  Here's a side view of the open case without the panel -- the inner panel is 1/2" ply that gets screwed in and behind which are going to be all the cords and stuff:

263545-1

Here you can see the position of some of the magnets when I did the set-up for the panel, laying the magnets over the top of the wood so I could double check their position and orientation of their magnetic poles:

263547-2

The removable panel was made out of a solid white oak frame with 1/2" white oak ply inset from the back into a rabbet.  I drilled the corresponding holes in the back of the panel and secured the facing set of magnets with CA glue.  The holding power of the magnets was enough to prevent lateral movement, but the panel was still slipping down so I also installed some 1/4" cleats/stops at the bottom that would stop the panel from falling:

263549-3

Viewed from the top the cleats are thin enough such that they won't interfere with the lift mechanism:

263551-4

The combination of magnets and cleats makes the panel super secure once installed, but easily removable just by pulling it from the top off the edge.  The panel is short of the top of the case by 7/8" since the horizontal surface/counter-top is going to have a 3/4" overhang (+ 1/8" reveal/clearance):

263553-5

263555-6

263557-7

263559-8

Problem solved.

 


« Last Edit: May 19, 2017, 07:26 AM by Edward A Reno III »
Kapex KS 120 w/UG Cart and Extensions • CXS Set • T18+3 w/Centrotec Installer's Set • PDC 18/4 • TS 75 • TSC 55 • HKC 55 w/250, 420 and 670 FSK rails • Carvex 420 w/Accessory Kit • Domino 500 Set • Domino 700 XL • OF 2200 w/Base Accessory Kit • OF 1400 • OF 1010 • MFK 700 EQ Set • LR 32 • MFS 400 w/2000, 1000, and 700 extensions • Rotex 90 • Rotex 150 • LS 130 • ETS-EC 150/5 • ETS 150/3 • Pro 5 LTD • RTS 400 • RAS 115.04 • DX 93 • HL 850 • CT 26 w/Long-Life Bag • CT Sys w/Long-Life Bag • MFT/3

Festool USA does not pre-approve the contents of this website nor endorse the application or use of any Festool product in any way other than in the manner described in the Festool Instruction Manual. To reduce the risk of serious injury and/or damage to your Festool product, always read, understand and follow all warnings and instructions in your Festool product's Instruction Manual. Although Festool strives for accuracy in the website material, the website may contain inaccuracies. Festool makes no representations about the accuracy, reliability, completeness or timeliness of the material on this website or about the results to be obtained from using the website. Festool and its affiliates cannot be responsible for improper postings or your reliance on the website's material. Your use of any material contained on this website is entirely at your own risk. The content contained on this site is provided for informational purposes only and does not constitute professional advice.


Offline neilc

  • Posts: 2081
Re: Fun with magnets
« Reply #1 on: May 19, 2017, 08:06 AM »
Great idea, Edward!

Offline HarveyWildes

  • Posts: 439
Re: Fun with magnets
« Reply #2 on: May 19, 2017, 09:25 AM »
Very cool.

I did a small toolbox for marking knives that has a magnet to keep the lid on.  It's not for carrying around, but I hardly ever get it out of the drawer - usually just open the top, grab a knife, and put the top back on.  It's easy to get multiple levels of tools in the drawer that way.  With that experience in mind, nice job of precisely locating the magnets!


Offline mike_aa

  • Posts: 946
Re: Fun with magnets
« Reply #3 on: May 19, 2017, 12:08 PM »
@Edward A Reno III  Edward,

Thanks for sharing a really brilliant idea!  That is some "out of the box" thinking!  I have an application coming up where I could put this to use. 

Not sure where you sourced your magnets, but in the past I've had good luck ordering from:

http://www.cmsmagnetics.com/

I also found another source with a lot of fun info:  http://www.kjmagnetics.com/

Thanks, Mike A.

Offline Edward A Reno III

  • Posts: 3033
Re: Fun with magnets
« Reply #4 on: May 19, 2017, 04:39 PM »
Thanks -- I just checked my original Amazon order and it turns out it was provided by CMS Magnetics as well.


@Edward A Reno III  Edward,

Thanks for sharing a really brilliant idea!  That is some "out of the box" thinking!  I have an application coming up where I could put this to use. 

Not sure where you sourced your magnets, but in the past I've had good luck ordering from:

http://www.cmsmagnetics.com/

I also found another source with a lot of fun info:  http://www.kjmagnetics.com/

Thanks, Mike A.
Kapex KS 120 w/UG Cart and Extensions • CXS Set • T18+3 w/Centrotec Installer's Set • PDC 18/4 • TS 75 • TSC 55 • HKC 55 w/250, 420 and 670 FSK rails • Carvex 420 w/Accessory Kit • Domino 500 Set • Domino 700 XL • OF 2200 w/Base Accessory Kit • OF 1400 • OF 1010 • MFK 700 EQ Set • LR 32 • MFS 400 w/2000, 1000, and 700 extensions • Rotex 90 • Rotex 150 • LS 130 • ETS-EC 150/5 • ETS 150/3 • Pro 5 LTD • RTS 400 • RAS 115.04 • DX 93 • HL 850 • CT 26 w/Long-Life Bag • CT Sys w/Long-Life Bag • MFT/3

Offline Edward A Reno III

  • Posts: 3033
Re: Fun with magnets
« Reply #5 on: May 21, 2017, 04:14 PM »
Just delivered the cabinets to the designer and got a big thumbs up for the magnets.
Kapex KS 120 w/UG Cart and Extensions • CXS Set • T18+3 w/Centrotec Installer's Set • PDC 18/4 • TS 75 • TSC 55 • HKC 55 w/250, 420 and 670 FSK rails • Carvex 420 w/Accessory Kit • Domino 500 Set • Domino 700 XL • OF 2200 w/Base Accessory Kit • OF 1400 • OF 1010 • MFK 700 EQ Set • LR 32 • MFS 400 w/2000, 1000, and 700 extensions • Rotex 90 • Rotex 150 • LS 130 • ETS-EC 150/5 • ETS 150/3 • Pro 5 LTD • RTS 400 • RAS 115.04 • DX 93 • HL 850 • CT 26 w/Long-Life Bag • CT Sys w/Long-Life Bag • MFT/3