Yeah - also holds the edges in-line. Would be good for 45 degree mitres rather than butt joints as pictured.

Busy printing a gridfinity holder for my 4mm hex bits at the moment.

I’ve stripped the hex of the grub crews in the BIQU extruder. It came over-tightened from the factory. I wanted to replace the hot end. I’ll try to get the grub screw out with a screw extractor.

I know one more fellow who had the same problem. I also saw it on forums.

I want to replace the grub screws with a long socket head screw. More robust hex (or a Torx).

@NickAlexeev With this chat you do not get large exposure, why not make it a question? WWW gave me : reddit.com/r/BIGTREETECH/comments/su396k/biqu_h2_grubb_screws