Rotary engraving is cool and if you already own an X-Carve with a Jtech laser here is a quick down and dirty hack that allows you to use your X-Carve and Jtech laser with the NEW RA2 PRO rotary tool from Xtool.
RA2 PRO Rotary tool: https://amzn.to/3QmcBfj
Molex Pin on Ebay: https://ebay.us/iXmX3U