Magnetic PCB Holder

by sneakypoo, published

Magnetic PCB Holder by sneakypoo Dec 28, 2012


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13812Views 3377Downloads Found in Electronics


Here's a simple PCB holder for soldering or just holding them steady to stare at longingly. I don't judge.

A couple of neodymium magnets holds it in place quite firmly on a metallic surface. This was designed for two magnets 12.7mm12.7mm6.3mm which is what I happened to have in my junk drawer. But of course you can substitute smaller ones or let me know and I can make the hole bigger/smaller.

The little lever (or flipper that I called it for some reason...) is simply used to more easily dislodge the thing after you stick it down. Neodymium magnets are pretty darn strong.


After printing cut a piece of 3mm filament to a suitable length, thread a flipper onto it and jam it into the bottom of the thing. Since filament diameter can vary quite a bit it'll either fit loosely or tightly, or not at all (it's designed for 2.9mm). I'll leave it to you to figure out how to deal with that, glue and or substituting the filament for something else comes to mind.

Glue the magnets in place using epoxy to make sure they really stay in there. Super glue might work but in my experience the "super" part seems misspelled...

If your magnets are too small you can make up for it by putting a fair bit of epoxy in the cavity, then put your magnets on top of some oily plastic (you know the kind that no glue seems to stick to, blister packs usually works), and finally squish the holder down onto it and let it sit overnight. That should fill out the voids and still leave your magnets clean on the underside.

Then, after you're done, you will take pictures of your print to make up for not sending me all of your money (throwing money at the screen does NOT count) :P

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Hi. I don't know if you are still updating, but i have 10 mm diameter, 2 mm thick cylinder magnets. Can you make magnet holes for mines?

I could, but looking at the list of CAD programs you use, I think you could do this very easily on your own with the files I provided ;)

I am just learning them as an old man :) I am planning to use your design in my class. That's why i asked you could do. It can take much time for me to do lol

This is a really smart and straightforward design. Did you base it on a commercially available product, or come up with the design yourself? I really like this!

I honestly don't remember, it's been so long since I made it. I didn't just copy an existing product, I know that much (or I should say, I didn't knowingly copy an existing product), but I probably saw something that had features I liked and then improved on it.

I did however copy a different design for holding PCBs that I prefer now, the PCBite, but I don't want to post it since it's a straight up copy.

I get that. I've been working on a model to house lenses from a popular glasses brand and don't want to run into issues there.

I'll have to make a couple of sets of these, I could use them for a lot of things including just holding things to metal surfaces at work, and maybe movable cable management. Wish I knew how to modify existing designs (STLs that is)

STEPs added, that should help. For STLs, I've found Designspark Mechanical to be pretty good at doing small changes.

Thanks! I'll make sure to check out Designspark Mechanical too. Best of luck on your future designs :)

Comments deleted.

I was wondering, what did you use as a base plate for this, is it galvanized steel? did you just buy sheet metal from a metal supplier and cut it or bought it as-is somewhere?

I honestly don't know what it is. I found a random piece of metal in the garbage room that I salvaged.

Thanks. probably going to salvage something as well...

Hi i got two big black magnet which are strong:-)
The dimensions are 40mmx25mmx10mm.
Can you pleae make a version so the magnet fits in? I dont have solidworks program.

I gave it a shot. I had to widen the part quite a bit and offset the hole to the side since your magnets are considerably bigger than the ones I used. Hope it works for you (and if it does, please post a pic :) ).

thanx :-) you also got the mirrored one? sure i post it when its done,

Now I do hehe. Forgot that one (used to flipping stuff in the slicer).

tomorrow i going to print them

This is really great! What design software did you use?

Thanks :) I used SolidWorks for these.

I wondered if you might have! You can kind of read that in the features. Or maybe it's my imagination.

Would you be willing to share the native SolidWorks files? I have a thought about using taulman's new nylon 618 for these, which might enable the flippers to be incorporated such that it's all a single block with a torsion strip connecting them... if that makes sense? I'd also like to use different magnets and embed them in the bottom using the Sailfish Pause at ZPos feature.


Sorry, this completely fell out of my head. Uploaded now though. Also, share with the class when you're done :)

Oh and don't make fun of how I designed it ;)

Awesome, thanks so much! I'll definitely share what I come up with. And I wouldn't dream of criticizing your design process. I just finished working on a project whose feature tree, after all the different tweaks and feature-adds and modifications, looked like the efforts of a madman. But it worked, and the prototypes were done on time, and the customer is happy. When it's time to move forward, sure, maybe then I'll go back and remodel from scratch. But in development you just have to do what's fastest in the moment.