Trolley Chain Key
thingiverse
Bring a coin or printed substitute when engaging this key, in order to release it. Search keywords "trolley key". 28 July 2017 Update Added a version without built-in support. 04 August 2018 Update Added versions without the hole. This modification was requested by a gracious maker, but does not work for me. The hole seems to be necessary to allow the lock to complete its rotation and then release the coin. Print Settings Printer: FlashForge Creator Pro Rafts: No Supports: Yes Resolution: 0.20 mm or finer is better. Infill: 25% Notes: Support for the key end is built into the model. It's connected by an array of dots. Take care when removing the support.
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