Keyed Heart Gears Keychain

by cymon, published

Keyed Heart Gears Keychain by cymon Jun 30, 2012


Tired of getting your finger caught in the workings of CrazyJaw's excellent Micro Gear Heart Keychain? I know I was. It's a great thing keep around to show people how cool 3D printed stuff is but it's a bit hard to use. That's why I modified the design and added a key and a place to hold it while you turn. The effect is... effective.

**UPDATE** Added plates and half plates for the shorter pins. Apparently I was using the longer pins. They worked for me, but were admittedly a bit loose.

**UPDATE 2** The new "8" piece (the one at the bottom) did not have enough taken off the bottom so the key would "pop" as it went pass making the turning stiff. If you have already printed one a few cuts with a blade will fix it. If you haven't use the V1.2 files.

Key added and keyless plate for people who want to print the key at 100% infill.

Recent Comments

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Pins do not fit and it is unbelievably frustrating. I can not figure out how to change filament diameter on a makerbot replicator 2.

Resolved using these settings with slic3r

#Layers and perimeters#
Turn off Detect thin walls
Turn off Extra perimeters if needed
Turn on External Perimeters first
Infill before perimeters
#Filament Settings#
Extrusion Multiplier .9

I have the same issue, I also checked and double checked with a micrometer the size of the filament and made sure the appropriate setting was configured in slic3r. Any other possibilities?

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Print a set of pins at 100% infill. (If you have dual extruders you can use the half set and use /thing:24195 to double your output.)

Print the parts with a lower infill if you'd like. You can print the whole set at once using the full plate or just print the new bits to modify your existing Micro Heart Gears Keychain.


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blairmcahill on Feb 14, 2014 said:

Pins do not fit and it is unbelievably frustrating. I can not figure out how to change filament diameter on a makerbot replicator 2.

biamigueis on Dec 24, 2012 said:

is anyone having problems with pins not going in even using a hammer? They just look way too big for the holes :S

cymon on Dec 24, 2012 said:

Gather around kids, it's time for the filament diameter song: http://www.youtube.com/watch?v...

taifoid on Aug 4, 2012 said:

Hi Cymon,

Nice work with the key and handle, great ideas. I've had an accident with mine and unfortunately the key is now in two bits instead of one. I realise my mistake now, as I only printed the plate at 20% infill to save plastic. Whilst the gears are fine at 20%, the key wasn't and I need to print a
nother. It'd be awesome if I could either grab a source file, or if you could pop up a plate with just the key so it can be printed separately at a higher infill by plastic misers like myself (づ。◕‿‿◕。)づ

Keep it awesome!

cymon on Aug 4, 2012 said:

I do it 20% infill and it works fine, but yeah, I can break that off for you, no problem.

I use Blender which imports STLs just fine and exports them just fine and doesn't do a real good job of saving history so basically the STLs are the source. But I'll get your key up quickly.

taifoid on Aug 4, 2012 said:

http://www.thingiverse.com/thi... Here's google sketchup file of the key by itself. I managed to import an stl into sketchup, but not the other way round. Any ideas about how to export stl's?

MacGyver on Jul 20, 2012 said:

This is next on my list to print. Looks like a really cool mod!