Making an induction work coil using 1/4" copper tubing. I use regular table salt to prevent the tubing from crushing, then push the salt out with water. See the previous video for the design parameters:
===Timestamps===
00:00 Introduction
4:45 Cutting and filling the tubing
8:51 Coil winding
12:19 Measurement
18:58 Removing the salt
22:37 Conclusion