Thank you for the GREAT idea, Alexandre !
I could not wait, so I built the gear with a flattened needle and
an aquarium pump ( preiously used for the PCB bubble etcher )
and a piece of tube: it works great!!
I'm here in front of my pc, answering you with one hand, and with the other
shaking with decision the needle with attached a SMD 1206 resistor:
it stays attached to the needle without problems!
Now I'll find a small 200 step stepper, and I'm thinking the best way to
attach the needle to the stepper, then to the Z axis.
Is a good idea to use a solenoid for Z axis as in LPKF pcb drillers ?
Paolo |