OpenForge Cut-Stone OpenLOCK Battery Base

by devonjones, published

OpenForge Cut-Stone OpenLOCK Battery Base by devonjones Feb 22, 2017
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1744Views 339Downloads Found in Toy & Game Accessories


This is an OpenLOCK E (2x2) floor tile that can supply battery power to any or all of it's OpenLOCK ports. Use it with the powered OpenLOCK clips to power other tiles like the torch wall.

OpenForge is now a patron supported project. I use the resources that my patrons give me in order to get the resources to let me create more sophisticated tiles with a greater level of detail. Please, support me, and I’ll deliver an ongoing stream of awesome gaming terrain. You can find more about OpenForge and Masterwork Tools at our:



  • All 3 printed parts
  • Superglue
  • Aluminum foil strip, 3 inches wide
  • Hobby knife and or wire cutters to clip the aluminum foil to length
  • CR2032 battery (see the torch wall for a recommendation of where to get one)

Important Note: At every step you can, test with an LED to make sure all the connections are still working fine. You are going to be super unhappy if you glue the top on and then it stops working because you didn't test.


Take the aluminum foil and fold it along the length until you get the width of the foil down to under 5mm wide

This aluminum strip will be somewhat ridgid (at least compared to the foil). Cut some lengths from this about 2 inches long.

Fold the aluminum to create a contact, and fold it around part 3 in one of the divets. Glue part 3 into part 1

Put the battery in, writing side (larger side) up

Fold the top contact roughly like this

Glue the top down (yes, this means that the battery is glued in, so try not to waste it. They should get ~ 20-30 hours). Prime and paint.

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Aug 2, 2017 - Modified Aug 2, 2017

I am wondering if this holder is small enough. At first glance it appears to be, and is way cheap.

I will let you know i ordered 20 of them.

Good job on this one. Very clever. But... dude, clean that keyboard! ;)

Okay, now THAT's SLICK :)

You have started me on my next terrain project. I love these. One request, there must be a way it can be designed to have the battery replaced. Thanks again DevonJones.

The problem basically is that any sort of door that I've been able to come up with requires a fair amount of precision on the part of the printer. The battery requires pressure to keep the aluminum foil in contact, so any door I create that isn't strong will make the whole thing fail. The logical place for a door would be on the bottom, but the designs I've seen for this stuff are going to be really fragile with 3d printing, or they will add a lot of build complexity (thinking that would need some metal springs to hold a tab shut.

Thus far I haven't found a design for this that really works. The best bet that I've run across is to glue the final top on with hot glue instead of superglue, which makes it reasonably strong, but also reasonably removable.

I'm certainly open to ideas, just thus far I haven't come up with anything that is strong, easy for people to implement and also openable.

What about creating the door on the bottom held in place with magnets? You already have the magnetic bases. What if you put the magnets on the bottom of a base, with a thin bottom, so the magnets would pull it tight?

the door models are pretty thin. but we could maybe add magnets to the door frames, and then you just put a paperclip through the door and have it hinge on the magnets.

The hot glue method has me covered for now. I suppose it is also not a tragedy if a battery base, once out of power, becomes a plain base. I am really looking forward to the community coming up with altars, wall carvings and statues which glow from some orifice and connect with your battery base.

That's basically the conclusion I came to. When it's done, it's still a fully usable floor tile, and printing new ones just means an expanding collection :-)

Could the batteries be slid into a chamber inside the of the tile instead of dropped into place? Leave a slot down the centre to lever the battery out once it dies?

I could give it a shot

Mar 18, 2017 - Modified Mar 18, 2017
trety - in reply to devonjones