Fit gauge for shelf board hooks - 8 free test clips (5, 6, 8, 16, 18, 19, 20, 25), no supports

What it is

A test clip to try before you print the hook: done in a few minutes, it shows which size fits your surface.

This is the free fit gauge for every hook in the range that mounts on a shelf board: 8 test clips, one per size step, each with its number raised on the face. Print the one you think fits (a few minutes), try it on your own surface, then pick the hook with the same number. Free, no strings attached.

Fit

Number on the clip Fits

5 5.55 mm slot for 5 mm glass shelf

6 6.55 mm slot for 6 mm glass shelf

8 8.55 mm slot for 8 mm glass shelf

16 16.60 mm slot with clamp lip for 16 mm shelf

18 18.60 mm slot with clamp lip for 18 mm shelf

19 19.60 mm slot with clamp lip for 19 mm shelf

20 20.60 mm slot with clamp lip for 20 mm shelf

25 25.60 mm slot with clamp lip for 25 mm shelf

Pushes onto the front edge of a shelf board and clamps; the hook hangs in front.

Dimensions (measured on the CAD solid)

Clip Overall W × D × H

5 18.8 × 48.5 × 18.0 mm

6 18.8 × 48.5 × 18.0 mm

8 18.8 × 48.5 × 18.0 mm

16 18.8 × 48.5 × 21.6 mm

18 18.8 × 48.5 × 23.6 mm

19 18.8 × 48.5 × 24.6 mm

20 18.8 × 48.5 × 25.6 mm

25 18.8 × 48.5 × 30.6 mm

Printing

PETG or ASA, 0.2 mm layers, 4 perimeters, 25 % infill. PLA works indoors but creeps under a steady load - do not use it for anything that hangs.

No supports. Every overhang was measured against 45 degrees in the orientation the file is saved in: 0.0 % of the surface stands steeper, which is nothing. Drop the file on the bed as it comes and print.

In the download

A ZIP with every clip as STL, 3MF and STEP, the dimensioned drawing as PDF, and a README with the number-to-fit table.

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