ng the HV mostly contained to where it belongs.
Mechanical load: I suggest you integrate a simple weight-lifting rig into your structure design. You may wind abou one meter of fine yarn on the axle and feed the end of the string over the side of the device over a low-friction pulley. Rollers for patio doors work well; seek one out that has low friction and add some oil. You may also just feed the string over a ceramic or glass part with a glossy smooth surface. Attach a light weight to the end o