Toy bolt and nut (child safe) 18 months+
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An oversized nut and bolt that are safe for children older than 18 months to play with. Easy to print as well!
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- 5 / 5
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Updated at source:
Model information
- Source
- Printables
- Category
- Other Toys & Games
- License
- Creative Commons — Attribution
This is a bolt and a nut that can easily be screwed in, either by hand or a (toy) screwdriver. This helps with finger dexterity and hand eye coordination.
The models were designed by me with two things in mind: child safety and easy printing. The big circular shapes make sure the parts can't be swallowed by your child, while the 45 degree chamfer on the bolt makes it easy to print without the need for supports. The thread I used is easy to print as well without drooping, it's the ANSI Unified Screw Thread, 0.5 inch for the bolt and 0.5625 inch for the nut for a loose fit.
My recommened print settings:
- Nut: print with the circle shape on the bed
- Bolt: print with the slit on the bed
- 0.4mm nozzle
- 0.2mm layer height
- No supports
- 8 shells/outer walls for maximum strength
- 20% infill
- A brim is optional, but I didn't need it with my printers
After printing, try to break the thread of the bolt by hand. It should not break off easily. If it does, print hotter and/or change the filament you use as the layers should be connected firmly.