@@ -118,6 +118,7 @@ Kevlar string wrapped around stepper axle, tension in string opposed by spindle
- With this string, wrapped directly around motor shaft, and using weight of the spindle as the sole downward force, it is possible to mill a reasonable PCB with the conical bit, and wax milling goes well. Measured dF/dz is much higher than before, 120 N/mm.
- The xy stage by itself has dF/dy ~ 40 N/mm. With wax block on table, at the top of the block dF/dy = 30 N/mm. Extra compliance is due to rotation about the single x-beam as a function of sideways flex of bearings.
- Applied kevlar string to the xy stage. Now the stiffness of the stage, dF/dy, has doubled to 80 N/mm. When the table is added, and a wax block attached, the stiffness at the top of the block is still low, about 40 N/mm. Now the 20mm width of the x-beam is the limiting design parameter.
- Made an eccentric nut as a bearing adjuster, following design from Ender machine. See below.
[Youtube video of wax milling](https://youtube.com/shorts/Uz45yHX_n6A?feature=share)
