Crab and lobster size gauge — 3D-printable model preview

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Outdoor & adventure Simple

Crab and lobster size gauge

Check crabs and lobsters against minimum size

Hold the gauge across the shell: a brown crab that fits inside the 140 mm notch, or a lobster carapace inside the 87 mm notch, is undersize and goes back. Check your local minimum sizes; the notches are easy to edit.

Customize this model

Size: 180 × 96 × 10 mm
Shape: Custom outline
Walls: 5.0 mm
Volume: 49.5 cm³
Est. weight (PLA): 61.4 g
Parts to print: 1
Category: Outdoor & adventure
Made by: Krypto
Built in: 9 steps

What’s in it

Custom outline, 180 × 96 × 10 mm, with 5.0 mm walls
Custom outline traced from a shape
Engraved text: “CRAB 140 LOBSTER 87”

How to print it

Print in bright PETG so it floats into view in a bucket.

Prints flat as a plate, no supports.

Filament: at most about 61.4 g of PLA printed solid (roughly $1.23 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 crab and lobster size gauge model?

The crab and lobster size gauge model measures 180 × 96 × 10 mm (width × depth × height). You can change every size in the free SO3D.xyz generator before you download it.

Does it need supports?

No. Print in bright PETG so it floats into view in a bucket. Prints flat as a plate, no supports.

How much filament does it use?

At most about 61.4 g of PLA (49.5 cm³ printed solid), roughly $1.23 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 crab and lobster size gauge model in your browser, then download it for your printer. Free, no CAD needed.

Customize this model