KeyRing of a combustion boxer-engine with turning crankshaft and moving pistons.
In this design the pistons of each opposed pair of cylinders move inwards and outwards at the same time. Like all BMW boxer engines.
Printing
No supports.
I printed with PLA+, layer height 0.15 mm.
Assembly
- Use some oil or grease between moving parts for a smooth operation.
- Build the crankshaft using the crankshaft alignment tool.
Apply glue. I use Loctite Super Glue-3 Power Gel.
Attention for the orientation of the piston rods: upper piston rod upside down!
- Click the pistons in the cylinders, placing the assembled crankshaft in the crankcase.
- Screw the winding button on the back of the crankshaft.
Operation
Turn the winding button on the backside of the crankcase.
The pistons of each opposed pair of cylinders move inwards and outwards at the same time.
Other keyrings in the same series:
Engine KeyRing by Bootjevaarder | Download free STL model | Printables.com
V-Engine KeyRing by Bootjevaarder | Download free STL model | Printables.com
Boxer-Engine KeyRing
by Bootjevaarder · original on Printables ↗
Gadgets / Other Gadgets
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Print profiles
Do not print - 3D Assembled.stlDEFAULT
⏱ time and weight estimated after preparation · 1 material(s)
Made to order: we prepare this file when you order, which adds a few minutes before printing starts.
Prints on: A1 mini 0.4PLA
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Crankshaft Alignment Tool.stl
⏱ time and weight estimated after preparation · 1 material(s)
Made to order: we prepare this file when you order, which adds a few minutes before printing starts.
Prints on: A1 mini 0.4PLA
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Do not print - 3D Crankshaft Alignment.stl
⏱ time and weight estimated after preparation · 1 material(s)
Made to order: we prepare this file when you order, which adds a few minutes before printing starts.
Prints on: A1 mini 0.4PLA
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Crankshaft-Pistons.stl
⏱ time and weight estimated after preparation · 1 material(s)
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Prints on: A1 mini 0.4PLA
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Crankshaft-Cylinders.stl
⏱ time and weight estimated after preparation · 1 material(s)
Made to order: we prepare this file when you order, which adds a few minutes before printing starts.
Prints on: A1 mini 0.4PLA
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