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3D printed RFID jigs for ST Engineering

A small RFID jig for ST Engineering, a lever that tips under weight, taken through three revisions, then printed 133 times with a laser-cut black EVA base grid and tool plate.

Client
ST Engineering
What it is
A small RFID jig, a lever that tips under weight
What we did
Three design revisions, test prints, 133 printed jigs and laser cutting
What the client got
133 jigs, a black EVA base grid and a top tool plate
Start a prototype (opens WhatsApp) Send a brief
RFID jigs printed in PLA
133
Design revisions, from a boxed see-saw to a flat lever
3
Long in the final revision, 35 mm wide and 12.2 mm tall
70 mm
Wide base grid, 510 mm deep, seven rows of 19 cells
695 mm

What we brought

  1. What we can do

    Smaller with each revision

    The first jig was a see-saw lever inside a case. By the third revision it was a 70 by 35 mm base with a flat lever on a pin, with a weight sensitivity of 1 g or less as the aim.

  2. How we look after you

    Tried in print before the run

    Each of the first two rounds came with a test print in PLA, so the lever could be tried in the hand before we printed 133.

  3. What you get

    Printed parts and cut foam from one studio

    We also drew and laser-cut the black EVA base grid and the top tool plate, so the jigs, the grid and the tool plate all came from one place.

The build

How we built it

5 steps, from the brief to the finished piece. Pick a step to jump to it.

The brief

Step 1 of 5

What it does
A lever that tips down under weight
Our scope
Design for manufacture over three revisions, test prints, 133 printed jigs, laser cutting

At Additive Inn, our 3D printing studio in Singapore, we designed and made an RFID jig for ST Engineering. It is a small lever that pivots like a see-saw and tips down under weight. Once the design was settled we printed 133 of them, and laser-cut a black EVA base grid and a top tool plate.

Three revisions

Step 2 of 5

We took the jig through three revisions. The second round asked for a smaller actuator, with a weight sensitivity of 1 g or less as the aim.

  1. Revision 0

    A case, a lever and a base. The lever sits on a sloped base inside the case and pivots like a see-saw, tipping down under weight.

    Render

  2. Revision 1

    Much smaller, 76 by 31 mm: an orange lever with a domed end pivots inside a slim case, with the RFID tag shown in place.

    Render

  3. Revision 2

    A low base 70 by 35 mm with a flat orange lever on a pin across it: 10 mm tall, and 12.2 mm with the lever.

    Render +1 more

Printed and laser cut

Step 3 of 5

We made a test print in PLA with each of the first two rounds. Then we printed 133 jigs in PLA in our studio, and laser-cut a base grid and a top tool plate from black EVA foam to our drawings.

RenderThe base grid, rendered.
DrawingThe base grid, 695 by 510 mm.
DrawingA tool plate sheet, a pocket for each tool.
DrawingA second tool plate sheet.

The grid and the tool plate

Step 4 of 5

In the final design the lever sits on a pin across the printed base. The base grid is cut with 133 cells, seven rows of 19, the same number as the jigs we printed, and the top tool plate has a pocket shaped to each tool.

The final build

Step 5 of 5

ST Engineering received 133 printed RFID jigs, the black EVA base grid and the top tool plate.

RenderTwo views of the final jig.

More product development

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