Bow-drill palm block with ball-race socket — 3D-printable model preview

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Outdoor & adventure Advanced

Bow-drill palm block with ball-race socket

Cut friction at the top of a bow drill

The palm block of a bow drill, with a cup that takes a 608 skateboard bearing: the spindle top runs in the bearing instead of grinding in a wooden socket, so all your effort goes into the fire end and the ember comes in a fraction of the time.

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Size (Base A): 84 × 58 × 22 mm
Shape: Oval
Walls: 2.4 mm
Volume: 27.3 cm³
Est. weight (PLA): 33.8 g
Parts to print: 1
Category: Outdoor & adventure
Made by: Krypto
Built in: 18 steps

What’s in it

Oval, 84 × 58 × 22 mm, with 2.4 mm walls
2 more bases built on (Bases B–C)
Base B: oval, 84 × 58 mm (stacked)
Base C: round, Ø 30 mm, 8 mm tall (stacked)

How to print it

Press in a 608 bearing (22 x 7 mm).

Prints as shown on its floor, no supports. Stacked parts are fused into one print.

Filament: at most about 33.8 g of PLA printed solid (roughly $0.68 at $20 per kg); normal infill uses less.

To get the files, open it in the generator and choose File › Download STL (one file per part) or Download 3MF (every part on one plate).

Questions

What size is the bow-drill palm block with ball-race socket model?

The bow-drill palm block with ball-race socket model measures 84 × 58 × 22 mm (width × depth × height). That is Base A; 2 more bases are built on. You can change every size in the free SO3D.xyz generator before you download it.

Does it need supports?

No. Press in a 608 bearing (22 x 7 mm). Prints as shown on its floor, no supports. Stacked parts are fused into one print.

How much filament does it use?

At most about 33.8 g of PLA (27.3 cm³ printed solid), roughly $0.68 of filament at $20 per kg. Normal infill uses less.

Can I change it?

Yes. Open it in the SO3D.xyz generator (free, in your browser), change the size, walls, dividers, holes, text or anything else, then download it as STL or 3MF for your slicer.

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Make it fit your space

Change the size, walls, dividers, holes and labels of the bow-drill palm block with ball-race socket model in your browser, then download it for your printer. Free, no CAD needed.

Customize this model