This idea was widely adopted, originating from a simple platform with a bracket. At the moment, there are several solutions for pipe punching, consider another.
For crafts, you need a steel plate, from which you will need to saw off several parts of different sizes. This device also contains a pair of bearings, two nuts and studs for clamping.
After assembling the entire structure, we get a device with the ability to adjust the clamp on both sides, this is done for pipes of different diameters. A sufficiently wide sleeve, which is the guide for the core, will allow the use of a tool of different sizes.