Modified Uni-bit for drilling 11/16 holes for 3/8 NPT weatherproof feedthrus. It produces excellent burr-free holes in the polypropelyne Pelican cases.

James Jarvis crimps Power Pole connectors on APO3s at the Dayton Hamvention. Note the cool pnuematic crimper.

Pneumatic PVC drill. The air cylinder on the left pushes the PVC pipe into the v-block. The springs behind the v-block compress and the PVC pipe feeds into the 22,000 RPM drill bit. Instant perfectly aligned hole.

Detail of assembly. The whole thing is made out of PVC plastic. Very quick to machine and darn cheap.

Caddy for completed wind data loggers. CNC milled from PVC plastic (front and back) and High Density Polyethylene (HDPE).