PCB drilling machine

A simple but reliable and high-quality construction will allow you to drill thin carbide drills.

To build the machine will need:

motor R775 https://goo.gl/cCgyQW
collet 1/8'' https://goo.gl/ouqA3R
collet holder https://goo.gl/u1dyb6
bearings 606 https://goo.gl/n9WciX
linear bearings LM12LUU https://goo.gl/sQDcXD
carbide drill https://goo.gl/iFmHWA

more:
- two polished shafts with a diameter of 12 mm and a length of 130 mm
- a piece of M6 stud with a length of 145 millimeters
- two springs
- small amount of mdf
- some fasteners

The driver for the spindle is assembled on the 555 timer. This allows the engine to run very soft

to be continued...