What's the difference between bgm-100 and xb-100?
The BGM-100 includes the US-105 Universal Support (the bar that the jigs fit onto), an XB-100 horizontal base, mounting hardware, rubber feet to mount to your plywood platform, and detailed instructions on how to build your grinder platform and use the jigs with a dry grinder.
The XB-100 is sold separately because there are older (much older) Tormek machines where the XB-100 was not included.
Thank you!