Handy print. I needed to clean the inside a little to fit the 2020 I had.

Unfortunately, this will not work with Misumi's own standard HFS5 20x20 extrusions. Seems like they are made for the V-slots that they sell for third-party companies instead of their T-slots, is what I mean.
Please consider uploading a customisable CAD file, from the software you made it in, so we can make one for drilling a certain length hole in the ends too.
Can it be used to drill into the hole you need to tap, too? Often times you need it a little bit larger first.
Worked perfectly! I used a harbor freight tap and it was slightly loose but the guide still did great. Thanks!
i made this but my tap does not fit to the hole at the middle