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Magnetic building board

Old 09-17-2014, 04:08 AM
  #1  
Abuelo
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Default Magnetic building board

I decided I needed a better building surface than I had been using, a drafting board from high school. Got the idea of a magnetic one from the forum and tracked down the pieces.

The metal surface is from Home Depot, 24" x 36", for $9.34. I cut the plywood base from scrap Baltic birch I had, very slightly oversize, about 1/8", so there would not be any sharp metal edges. As the plywood was slightly warped knew i would need a base of some sort. I found at a Habitat for Humanities ReStore a surplus drawer, about 22" x 36" x 2" high, for $2.00.

I added two drawer interior supports so the plywood would have more contact, glued them all together with Titebond and used finishing nails to pull the plywood level. Once all was setup, nails countersunk and the plywood sanded, I used about half of a pint can of contact cement to attach the metal to the plywood.

The magnets are from Harbor Freight, the four red are welding magnets and provide right angle support and the dark gray ones are for general construction. The latter are 2 for 98Ę but right now are on sale at half price.

The ply and metal is larger than the drawer. I wanted an overhang so I would have a way could easily clamp to the surface. Typically, I clamp a metal yardstick down and build against it when I need something straight, like a wing. Right now I'm building the Murgatroid's wing there.

Photos attached. An easy and quick project with the total cost about $20.
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Old 09-17-2014, 05:54 AM
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great idea and not very expensive to boot.....I like it...
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Old 09-18-2014, 10:03 PM
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Here is a photo of the board in use.

The plan is clamped down with waxed paper over and a metal yardstick serving as a hard straight edge for the wing. Magnets and clamps hold everything else.

The pop can shown has a concave base that works perfect for holding a small amount of glue or for mixing epoxy. Very handy and readily available.
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Old 09-18-2014, 10:34 PM
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I have always wanted a new magnet building table and soon i will build one . The harbor freight magnets look good so i will check them out . Thanks abuelo , joe
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Old 09-18-2014, 10:36 PM
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I do believe I need to visit Home Depot today. My wifes in a good mood so 30-40 dollars isn't going to upset her much.....lol

And I already have an assortment of right angle magnets from HF and a good base to contact the sheet metal down to.

Need to pick up some of those domino shaped magnets and some contact adhesive while out and about also....

Don
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Old 09-18-2014, 10:59 PM
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I have a steel guy i use to supply my beams for the houses i build so i will have to get a sheet bigger than most but it wont be hard to find a large piece . The magnets were the hard part to get a deal on . joe
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Old 09-18-2014, 11:22 PM
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Originally Posted by road king 97 View Post
I have a steel guy i use to supply my beams for the houses i build so i will have to get a sheet bigger than most but it wont be hard to find a large piece . The magnets were the hard part to get a deal on . joe
If anyone is looking for high powered magnets, they are available. Not cheap though.

http://www.kjmagnetics.com/products.asp?cat=11

Also, the American Science and Surplus center has a whole selection of magnets. Here is one of them:
http://www.sciplus.com/p/BAR-MAGNETS_51248
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Old 09-19-2014, 12:12 AM
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Joe,
When I saw the picture of you working on your plane, I realized, you are much younger and shorter than I would have guessed.

As long as we keep working on model airplanes, we never really grow up.
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Old 09-19-2014, 01:04 AM
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Originally Posted by kyleservicetech View Post
If anyone is looking for high powered magnets, they are available. Not cheap though.

http://www.kjmagnetics.com/products.asp?cat=11
Keep in mind magnet prices from K&J are usually for a pack of 10 (or more) so their prices (for me) are extremely good and their service even better. I've been using them for the past few years and they absolutely ROCK!

I have one of the original Eldon J. Lind "Magic Magnet" building boards and wouldn't part with it for the world. I also have boxes of the magnets and accessory hold downs. I do think I need to hit Harbor Freight and grab some of those welding magnets listed in the OP post. They'll work quite well on my board.

Joe
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Old 09-19-2014, 01:12 AM
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Originally Posted by Wildflyer View Post
Joe,
When I saw the picture of you working on your plane, I realized, you are much younger and shorter than I would have guessed.

As long as we keep working on model airplanes, we never really grow up.
He is 11 now and trained to cut parts out and sand them There was a reason for starting him out young ,i cant afford a lazer cutter ! joe
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Old 09-19-2014, 02:08 AM
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Originally Posted by Turbojoe View Post
Keep in mind magnet prices from K&J are usually for a pack of 10 (or more) so their prices (for me) are extremely good and their service even better. I've been using them for the past few years and they absolutely ROCK!
I've got a hand full of Cobalt magnets from work that will lift some 500 pounds on a one inch thick steel block. Those things can really hurt you. Got one of my fingers mixed in with one, and it didn't stop bleeding for 8 hours.
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Old 09-19-2014, 02:26 AM
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Originally Posted by kyleservicetech View Post
I've got a hand full of Cobalt magnets from work that will lift some 500 pounds on a one inch thick steel block. Those things can really hurt you. Got one of my fingers mixed in with one, and it didn't stop bleeding for 8 hours.
Ouch! Yeah, some of the magnets available now should maybe be listed as weapons!

Joe
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Old 09-19-2014, 06:24 AM
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Originally Posted by Turbojoe View Post
Ouch! Yeah, some of the magnets available now should maybe be listed as weapons!

Joe
Yeah, they make you sign a waiver before ordering this magnet that can lift 1000 pounds.
http://www.kjmagnetics.com/proddetai...d=BZX0Z0Y0-N52
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Old 09-19-2014, 01:02 PM
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Originally Posted by Turbojoe View Post
Keep in mind magnet prices from K&J are usually for a pack of 10 (or more)......
Joe

Joe,

Where did you find this information on their website?

Don
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Old 09-19-2014, 05:20 PM
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Originally Posted by DEG View Post
Joe,

Where did you find this information on their website?

Don
http://www.kjmagnetics.com/products.asp?cat=10 This was the last page I ordered from. I probably should have said most of the smaller sizes were in 10 packs.

Joe
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Old 09-19-2014, 06:13 PM
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Thanks Joe.....makes a big difference in price....If you know off hand, what is the pulling power of the magnets you use?
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Old 09-19-2014, 06:30 PM
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http://www.kjmagnetics.com/proddetail.asp?prod=D403 is what I use for hatches. All the specs are on this page. I have yet to find these in an LHS for under $1.25 each.

I ordered a bunch of those tiny magnets a while back for my daughter. She made a really cool activity board for my grandson with them.

Joe
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Old 09-19-2014, 07:53 PM
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Originally Posted by Turbojoe View Post
http://www.kjmagnetics.com/proddetail.asp?prod=D403 is what I use for hatches. All the specs are on this page. I have yet to find these in an LHS for under $1.25 each.

I ordered a bunch of those tiny magnets a while back for my daughter. She made a really cool activity board for my grandson with them.

Joe
FYI, just be aware that some small kids have swallowed those tiny magnets. Two of them can result in emergency surgery

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Old 09-19-2014, 08:14 PM
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Originally Posted by kyleservicetech View Post
FYI, just be aware that some small kids have swallowed those tiny magnets. Two of
them can result in emergency surgery
My daughter is not a typical parent. When she has activities with her son she is actually THERE with him. She doesn't toss him a toy and say go away while I watch TV. I wish I had taken pictures of what she made for him. The magnets are truly captive. He's almost 4 now and smarter than 99% of the college kids I deal with on a daily basis. He knows better than to ingest non food items. Sometimes I wonder about these kids on campus......

Joe
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Old 09-19-2014, 08:25 PM
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I had saved this site long ago but i have a couple more saved also .http://www.easybuiltmodels.com/b04.htm and this one too .http://www.magnetsource.com/airfieldmodels/ As far as the kids eating stuff ! Mine are all grown and gone only the 11 year old home still and its peace and quite here except for my dogs barking , lol joe
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Old 01-03-2019, 12:53 AM
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Bringing back an OLD thread. I still LOVE my Eldon J. Lind magnetic building board. The magnets however leave a LOT to be desired. The two side plates on every one of them, even the new ones I bought from Tower Hobbies before they were discontinued are poorly glued. Not a single one is square. I'd like to throw them all in the trash and have a fixture adapter that uses neodymium magnets. My daughter bought a 3D printer and it stays at my house. I'm doing my best to learn CAD so I can produce R/C related items in addition to what she wants. I'm having little luck designing parts so far. Just wondering if anyone has seen or maybe even designed a 3D printed neodymium replacement adapter for the garbage magnets that are supplied with the E.J. Lind board.

Joe
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Old 01-03-2019, 01:34 AM
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Originally Posted by Turbojoe View Post
Bringing back an OLD thread. I still LOVE my Eldon J. Lind magnetic building board. The magnets however leave a LOT to be desired. The two side plates on every one of them, even the new ones I bought from Tower Hobbies before they were discontinued are poorly glued. Not a single one is square. I'd like to throw them all in the trash and have a fixture adapter that uses neodymium magnets. My daughter bought a 3D printer and it stays at my house. I'm doing my best to learn CAD so I can produce R/C related items in addition to what she wants. I'm having little luck designing parts so far. Just wondering if anyone has seen or maybe even designed a 3D printed neodymium replacement adapter for the garbage magnets that are supplied with the E.J. Lind board.

Joe
Check out tinkercad on the internet. This is a fairly easy to use CAD program for 3D printers, and its FREE! (I'm also a beginner with 3D printing, and am currently printing a faceplate for my BattIR project listed in RCGroups under DIY Electronics. That is a complex panel that holds an LCD display, Arduino Nano, couple of switches, supports for power resistors and battery holder. Next, check out Ideamaker, another free program that takes the Tinktercad files, and translates it to the files used by your 3D printer.

Last, check out this web page for a magnet supplier that carries just about anything you might need for your project.

https://www.kjmagnetics.com/neomaginfo.asp
https://www.kjmagnetics.com/products.asp?cat=1
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Old 01-03-2019, 01:47 AM
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I started playing with Tinkercad yesterday. Minimal success so far but will hopefully improve soon. I've ordered from KJ Magnetics many times in the past and they rock! I'm getting good at 3D printing. Just hoping someone has already created the neodymium adapters I'm looking for.

Joe
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