I need a scraper holder, but I don't want to fix it on the spool holder. Instead, I want to install it on the printer's body.
I used the stand body designed by Toonies and the T-nut customized by DaVinci2000, and integrated the two perfectly in TinkerCAD.
When printing, I directly embedded the T-shaped nut into the top of the printed piece. I just need to file the back of the nut a little, and then it can smoothly slide into the reserved groove. The installation process is completely stress-free.

Edit: A new STL file has been added. In the future, there will be no need to grind the nuts anymore, which will ensure that they fit perfectly into the grooves.