Custom 3D Printed Coin Keychains

Custom coin keychains

35 coin keychains for a private client, printed in black and orange, with three discs that swing out of a clip-on case.

Service

Custom Keychains

What they got

35 coin keychains, assembled and ready to clip on

What it is made of

Black and orange PLA+, with a metal clip

How it works

Three discs swing out of the case on one pivot

What we brought

What we can do

From a sketch to a working part

We drew the keychain in pencil, then modelled the case, discs and pivot in 3D for printing.

How we look after you

Moving parts, printed to fit

The three discs turn on one pivot inside a two-part case, so they fold away and fan out.

What you get

A full batch, put together by hand

All 35 were printed, assembled by hand and fitted with a clip and key ring.

The brief

Step 1 of 5

Quantity: 35 keychains
Colours: Black case, orange discs

At Additive Inn, our 3D printing studio in Singapore, we made 35 coin keychains for a private client. The client needed a keychain with discs that fold into a case and swing out, printed in black and orange.

Design and prototyping

Step 2 of 5

The keychain started as pencil sketches: a case on a key ring, with round discs that pivot from one point. We then modelled the case, discs and pivot in 3D, ready for FDM printing.

A hand sketching the keychain in pencil: two round discs joined at a pivot, with small circles drawn beside them — DrawingThe first pencil sketches.

Close-up of the pencil sketch showing the round discs and the pivot ring that joins them — DrawingThe discs and the pivot, drawn out.

Production

Step 3 of 5

Every part was printed on our FDM printers in PLA+: a two-part black case and three orange discs per keychain, each disc with a pivot hole.

The printed parts for one keychain laid out on a wooden table: three orange discs and the two halves of the black case — The parts for one keychain.

Three orange discs and the two black case halves from above, showing the pivot holes and the clip loop — Pivot holes in every part.

The black case halves and orange discs at an angle on a wooden tray, with the pivot pin on one case half — The case halves and the pivot pin.

Build and assembly

Step 4 of 5

Each keychain was put together by hand: the discs went onto the pivot, the case closed around them, and a metal clip and key ring went through the loop.

Hands assembling the keychains at a wooden table, with finished black and orange keychains and pliers spread around — The batch, assembled by hand.

The final build

Step 5 of 5

The client got all 35 keychains, ready to use: the orange discs fold away inside the black case and fan out on their pivot.

The coin keychain hanging from a bottle lid on its metal clip, the orange discs folded away inside the black case — Folded away, on its clip.

Custom coin keychains