Has anyone modded a K40 to have a Z axis and a rotary attachment? If so is there a Kit I can buy?
Yes there are many available you might want to do some research into the different types as well, roller/chuck type, rotary demands can change greatly depending on the type of things you want engraved.
You have to modify the case if you want to engrave larger objects…in other words cut out the bottom so you can get focus on object in rotary rollers. Not for the faint of heart, and I have not seen kits for this.