This tube is made for cutting at an angle to make it easier to guide the filament through into the feed. It also cuts Bowden tubes. I used minimal supports and 50% infill. It can be printed at a lower infill. The blade used is very sharp so be very careful handling it. I glued the blade base itself. No need to glue the blade to the print. It slides into the slot easily. The links to the accessories required are below. Assembly is very easy.
2-3MM x 20 screws
2-5MMW x 6MML brass inserts
2-6mm x 18-20MM light springs
1-Titan Tools Extra-Heavy Duty #20 Razor Blades (11039)
https://www.amazon.com/gp/product/B09C8LCCRC/ref=ppx_yo_dt_b_search_asin_image?ie=UTF8&th=1
https://www.amazon.com/gp/product/B000PRYD6K/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
https://www.amazon.com/gp/product/B07LBQRYR3/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B076LMXW17/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
The author marked this model as their own original creation.