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5-Arm BCD (Bolt-Circle-Diameter) Gauge [Bike Tool]
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Tool for measuring the Bolt-Circle-Diameter of a traditional 5-arm crankset/5-bolt chainring.
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Model information
- Source
- Printables
- Category
- Tools
- License
- Creative Commons — Attribution — Noncommercial
Tool for gauging the Bolt-Circle-Diameter of a 5-arm crankset or 5-bolt chainring, with even hole spacing, featuring the most commonly found BCDs. More info about BCDs can be found on Sheldon Brown's site here.
Print settings are fairly irrelevant, I used PLA at 0.2mm layer height. I printed the last 0.6mm in a different color to make the text stand out.
A DXF file is also included in case you'd like the part to be laser cut/engraved or CNC-milled.