JD SMART KEYCHAIN v1.2

(2024-06-17)

• Small size: 63x30x13mm
• Very fast print: Less than 15 minutes
• Phone stand (tested with a large iPhone 8 Plus and iPhone 12 Pro)
• Cart coin (ø23.24 x 2.3mm; compatible with 1-Euro and Danish 10-krone coins)

I wanted a keychain with multiple purposes, and so I made this combined shopping cart coin and phone stand.

The coin is BLANK, so you can put your own name, logo etc. in any CAD software.

Print Settings

I've supplied a print profile in .3mf which ensures high sturdiness as well as a fast print time of 15 minutes, for those with a BambuLab printer.

The below settings are only recommendations meant for users with something else, fx. Creality, Anycubic etc.
Most older printers will take around 40-60 minutes to print this in an acceptable quality, which makes this a fast print even for older printers.

Resolution (layer height)

0.2

Rafts:

Only if you have bed adhesion issues

Supports:

No

Infill:

25-35% (depends on the pattern you choose)

Notes:

Raft may be needed for the keychain part, as the flanges warp relatively easy on open printers with bad first layer adhesion. To ensure that you avoid warping, just print the keychain on a raft with at least 3mm extra margin.

The 25-35% infill is due to the need for increased tensile strength, as this is a thing that will live in your pockets and probably get bent when you tie your shoes etc.

What's new?

Compared to the older version 1.0, this has improved stability for large phones and a slightly refined shape.