Rectangular Pipe Cutter 90 Angle

I'm currently building a table for my H2C as those in retail shops don't meet my requirements.

I'd like to fit Dual AMS Sliding Rack - Bowtie Assembly under the printer so had to think something on my own.

Those guides where to cut steel pipes helps a lot and later can be bent easily and welded together.

Uploaded sizes of 20, 30, 40, 50mm (in my case it's 40x3mm tube).