Summary

With this system, you can airshoot a string into a 110mm pipe and afterwards put cables in it. Worked well for me, even with a lot of corners.

What you need:

• print the disc twice
• 4/5mm threaded rod and nuts
• Gasket material, I used rest from old tire tubes
• an adapter from compressor to the G 1/4 thread

How it works: Look at the picture and manufacture it like that. Put the string through the hole in the pressuriser. Attach the string to the driver and put it into the pipe. Pressurise the pipe and the string vanishing.