A FreeCAD model of a JMK Freeskate. The 3D model is viewable at shone.dev/freeskate
To get rail length: App.getDocument("freeskate").getObjectsByLabel("rails-shape-binder")[0].Shape.Length
| Name | Length | Bend | Mandril diameter | Actual diameter |
|---|---|---|---|---|
| Wheel guard | 94.25mm | 180deg | 60mm | |
| Along truck left edge | 100mm | |||
| Bend back | 15.7mm | 180deg | 9mm | 10mm |
| Back along truck left edge | 153mm | |||
| Bend around deck | 30.6mm | 180deg | 18mm | 19.5mm |
| Along deck | 112.25mm | |||
| Bend across deck | 15.3mm | 90deg | 18mm | 19.5mm |
| Across deck | 40.50mm | |||
| Bend back along deck | 15.3mm | 90deg | 18mm | 19.5mm |
| Back along deck | 112.25mm | |||
| Bend around deck | 30.6mm | 180deg | 18mm | 19.5mm |
| Along truck right edge | 153mm | |||
| Bend back | 15.7mm | 180deg | 9mm | 10mm |
| Back along truck right edge | 30mm | |||
| Bend catch into truck | 2mm | 23.75deg | 9mm | 10mm |
| Ramp into truck | 35.57mm | |||
| Bend back out of truck | 9.93mm | 113.75deg | 9mm | 10mm |
| Catch edge | 12mm | |||
| Catch handle angle | 4.36mm | 50deg | 9mm | 10mm |
| Catch handle | 18mm |
6mm stainless steel rod, bent 180 degrees around an 18mm diameter mandril resulted in an actual inner bend diameter of 19.5mm (outer diameter ~32mm). The actual bend diameter is larger than the mandril due to spring-back of the stainless steel material. Also, to acheive a 180 degree bend the rod must be bend back onto itself so that it touches and then bent even a bit further.
| Material | Bend | Mandril diameter | Actual bend diameter (inner) | Actual bend diameter (rod center) |
|---|---|---|---|---|
| 6mm Stainless steel rod | 180 deg | 18mm | 19.5mm | 25.5mm |
| 6mm Stainless steel rod | 180 deg | 9mm | 10.0mm | 16.0mm |