Compact Counter for DnD or MtG

I made a proliferation deck in MtG so I found myself needing a lot of counters. I tried out a bunch of designs I found online, but I wasn't happy with any of them, they were either too large, or had 3d printed gear axles that easily broke when at a small size. So I decided to design my own counter. 

This counter is small 1" x 1.3" x 0.7". It has flaps that act like springs to keep the wheel centered on a number so it can be easily seen through the top of the frame which gives it a nice tactile feel to turning the numbers. It also automatically progresses the tens wheel by one when the ones wheel makes a full rotation, doing this only as the 9 rolls over to 0. It uses extra filament for the axles of the wheels and the internal gears, as well as using filament as rivets to hold it together. no glue necessary. Although for best long term operation the small gears should be glued or melted into the inter shaft, otherwise you might lose the automatic tens progression and have to manually rotate it. I think the numbers show up easily enough, (probably easier if you were to use white or a light color) but if you want extra contrast, you can easily paint the surfaces of the wheels and wipe away the paint so the paint only stays in the indented numbers.

Print 1 of each part, except 2 of the 7 tooth gears and 4 flaps (probably 5 cause you will likely lose one) 

How to assemble:

First if you are like me and have an old Ender 3, you might want to take a file to any holes that have smaller diameters from elephants foot effects.

Then you want to attach the two small internal gears to the lower (non centered) hole in the center post on either side using some filament. You want those two gears to have their teeth line up. This is where you might want to add a dab of glue or melt the shaft to the two gears, but allow it to rotate on the center post. (you can even use the nozzle of your 3d printer to do this, just set the temperature of the nozzle to 210 C and lightly push the gear against it where the shaft is and hold for a second.

Put the wheels on either side of the center post with the 7 tooth gears on the inside of the wheels and then press the center post (long side) into the frame. Then push a filament through the center hole of all of them; the frame, wheels and center post. once you push the filament through it all, test how well it rotates and then clip the protruding filament.

push the flaps into the 4 slots in the base until each of them is firmly seated. be careful not to bend them. 

put the assembled frame onto the base making sure the center post seats. place it on its side and push extra filament into the two holes at the bottom. I find this is easiest done by sticking the filament into the hole and clipping it so only 1/8" protrudes and then pushing that in with a hard object. Flip it over and rivet the other two holes. Then you are done. Enjoy.