T-slot adapter

this is my creation to avoid the use of expensive T slot or OpenBeam .
it is an adapter that I created for the supports of the Delta Kossel .
should be slid to the ' interior of a tube of aluminum with a square section in my case 2x2 but easily adaptable for any measurement
keep in mind that when you print the adapter part of the collection must be less than the size of the ' inner tube

I hope it will be useful , if printed with the inner edge of 2mm the result is very solid