Petling tube extractor ("Plastic magnet")
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Tool specifically made to extract a Petling from a tube (with a minimum diameter of aprox. 46 mm)
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Model information
- Source
- Printables
- Category
- Outdoor Sports
- License
- Creative Commons — Attribution — Noncommercial
Tool specifically made to extract a Petling from a tube (with a minimum diameter of approx. 46 mm)
To assemble the gripper, use:
3x M3x16 mm hex bolts
1x silicone O-ring approx. 23 mm ID, or a rubber band.
String version
1x flag line, wire or similar with a max Ø of 5mm, feed through threaded hole and put a knot on it.
1x lead weight as found on old fishing nets (75g, H: 28-29mm, Ø: 22-23mm, inner bore: 6mm)
Extractor version:
1x M6x20 mm hex bolt (if that is your extractor configuration)
or use the built-in 6x1mm thread
Print GripperHousing with supports. 0.2 layer and clean up 3mm holes with drill bit. Or finer resolution and no clean up.
Adjust gripping power by moving the O-ring/rubber band to a different groove in the arms. Make sure the arms are moving freely before applying the O-ring/rubber band.
Purpose built for this cache: https://www.geocaching.com/geocache/GCBR11W_petling-i-ror
Should work for this cache as well: https://www.geocaching.com/geocache/GCBTKHR_petling-i-ror-hastrupvej