Tunable torque wrench

## Tunable torque wrench

There are many good printable fixed torque wrench design for nozzle changing but most of them depend on the characteristics of the filament used to print the parts. This version is my attempt to solve that problem.

### Features
- Adjustable torque
- Come with calibration tool
- Less depend on filament characteristics

### Require parts
- Printed parts
- 20mm d8mm spring.(I use the yellow spring that often use for printer bed)
- OD4mm ID2mm PTFE tube
- 1/4" Hex Socket Adapter (something like this https://www.amazon.com/DEWALT-DW2541-4-Inch-Socket-Adapter/dp/B0000225P4)
- Hex socket matched your nozzle size

### Print setting
- Material : PETG or ABS. PLA is too brite as my testing and they are tent to deform under pressure.
- Print setting : 5 walls, 5 top/bottom layers, 30% infill

### Assembly guide
- Cut the PTFE tube into 6 segments with length of 5mm, this will be use as bearing for the top gear.
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