Pegboard Hook Pack with Snap-In Cradles + Fit-Test Coupon (parametric, 1/4 in and 1/8 in boards)

A pegboard hook pack built around one idea: measure first, then print. Print the small two-peg fit-test coupon and try it in your board, adjust the clearance if needed, then print the hooks with the same settings.

The snap-in cradle is sized from the diameter you enter (a handle, dowel, file, level, extension wand or rod). Its opening is slightly narrower than the item, so it is designed to click in and sit in the cradle rather than rest on a bare hook. Use two cradles to store a long item horizontally along the board.

The pack also includes a J-hook with a lip and an angled peg. Hole spacing, hole size and board thickness are parameters, with defaults for 1 in (25.4 mm) spacing, 1/4 in holes and 1/4 in board; set 4.8 mm holes and 3.2 mm board for thinner 1/8 in hardboard. The upper peg is angled upward behind the board and the lower peg is designed to stop the hook rotating (insert it tilted, then swing it down).

Prints lying on its side: every shape is a straight extrusion, so no supports are needed.

Safety – please read. These hooks have not been load-tested and have no load rating. They are designed for light hand tools and accessories. Don't hang heavy, sharp or powered tools over a place where they could fall on someone, and don't use them for anything where a falling item could cause harm. Check that each hook sits fully in the board before hanging anything, and check hooks for cracks from time to time.

Notes and limits:

• Not load-tested and has no load rating; for light hand tools and accessories (see Safety).

• Peg fit depends on your printer and board; print the fit-test coupon first.

• The snap opening is set by snap_frac (0.85 = opening is 85% of the item diameter); how firm it feels depends on material and printer, so test with one cradle first.

• The cradle is designed for items lying parallel to the board (horizontally), not hanging vertically.

• Pegs are octagonal and sized to pass the hole at the peg angle; boards with very different holes or thickness need the parameters changed.

• Pegs sit flush with one side of the hook, so the hook is slightly off-centre from the holes.

• For round-hole pegboard only (1/4 in or 1/8 in boards); not for slotted wall-board systems.

• Previews are OpenSCAD renders, not photos of real prints.

Included files: snap-cradle-22mm, snap-cradle-32mm, j-hook-50mm, angled-peg-75mm and fit-test-coupon STLs, plus pegboard-snap-cradle-hook-pack.scad (OpenSCAD source with a Customizer panel) and preview renders.

How to customize: install the free OpenSCAD (openscad.org), open the .scad, choose Window > Customizer, change the values, then press F6 (Render) and Export STL.

Print settings: PETG (preferred, tougher and slightly flexible for the snap cradle) or PLA for light items; layer height 0.2 mm; 4 perimeters/walls; 100% infill for the hooks; no supports; orientation as exported (lying on its side, wide face on the bed). If the coupon is tight, raise peg_clearance by 0.1 mm; if it is loose, lower it.

Parametric OpenSCAD design by Maker Hollow Studio. The files were checked automatically (watertight, correct size, prints without supports) but have not yet been test-printed. Preview images are OpenSCAD renders.

Licence: Creative Commons Attribution 4.0 International (CC BY 4.0). You may print, remix, share and sell prints and remixes, including commercially, as long as you give attribution (credit Maker Hollow Studio and link to this design).