I wasn't really satisfied with the key holders available so I made some myself in Fusion 360.
No logo's or watermarks, using only 2 screws so it's easy to assemble.
More designs to come, stay tuned! Suggestions or feedback, let me know via the comments!
(The holes for the nuts & bolts are modelled for M3 nuts and bolts)
There are 5 versions :
V1 Rounded Wide
V2 Rounded Small
V3 Hexagon Wide
V4 Hexagon Small
V5 Rounded Compact
Every version has two sides, one with a round recessed hole (part_1) and one with a hexagon recessed hole (part_2).
Note: If you don't want a hexagon recessed hole, you can mirror part_1 (round hole) of any version and use that instead of part_2.
Top and bottom parts are interchangeable, as long as they are mirrored or it won't fit.
Printing & Assembly Instructions :
Scroll down for step-by-step instructions!
UPDATE 25-01-2019 (16:30 CET) :
- Added a Keyring washer, if you want a keyring attached to your key holder you can print MultiKey_Keyring.stl and replace that for a washer.
UPDATE 25-01-2019 (17:45 CET) :
- Fixed some minor mistakes.
UPDATE 25-01-2019 (22:05 CET) :
- Gave the 3mm holes slightly more tollerance.
UPDATE 25-01-2019 (23:10 CET) :
- Gave the middle holes slightly more tollerance, my first print went fine but i noticed it's hard to insert on second print. I gave it more room, should be fixed now.
UPDATE 29-01-2019 (19:55 CET) :
- NEW DESIGN : ROUNDED_COMPACT. I really like this one, it's a small form factor and the keys fit really nicely (if you have "normal" keys).
You can use any settings you see fit, i went for 100% infil for strength.
Supports are probably needed for the holes in the middle. Maybe not, i haven't tried without.
I made it from PLA, you can choose whatever material you see fit.
Choose a version (V1, V2, V3, V4).
Print part_1 and part_2 of that version.
How many keys?
Choose the appropriate MidSpacer file, for example : MultiKey_MidSpacer-3-4-keys.stl if you have 3 or 4 keys.
You probably want washers between the keys (IMPORTANT: If you don't want washers (Or less) or your keys are not the same thickness as mine (2mm) you need to manually adjust the MidSpacer, just calculate the thickness of all your keys and washers (2mm) combined and scale any MidSpacer in the Z direction to the size you need. You can easily do this in any slicer software).
The MidSpacers are made with max amount of washers in mind, so one between each key AND the case.
If you have an uneven amount of keys, you need to fill that empty space up with a washer.
I've done the calculating for you and here are the numbers (assuming your keys are 2mm thick).
1 key - 5 washers
2 keys - 4 washers
3 keys - 7 washers
4 keys - 6 washers
5 keys - 9 washers
6 keys - 8 washers
7 keys - 10 washers
8 keys - 10 washers
If you want, you can replace one washer with a Keyring (MultiKey_Keyring.stl).
Aditional printing info
- All parts should be printed with the flat part down, Cura will import them correctly, i'm not sure about other slicers.
- Print with supports, for the holes in the middle where the mid-spacer goes. Concentric supports seems to be the best option. With 0.3 Z-distance (And support interface) they come out really easily for me.
- I printed the parts with 100% infill, you could probably get away with less if you want.
Any feedback is appreciated, let me know!
These are all the parts you need (You might need more or less washers, depending on how many keys you have)
Put the MidSpacer inside the hole of PART_2 (the part with the hex recessed holes)
Place bolts like shown in the picture in PART_1 (the part with the round recessed holes). Also put in the first two washers.
Add keys and washers, alternating.
You can replace one washer with a keyring if you so desire.
Put both parts together, flip the whole thing over and screw down the bolts.
You're done! No more rattling keys!