Additional Motor

I’m assembling the Crossfire. I got the LS-THC upgrade and I can’t seem to find any instructions on where to install the additional motor.
Any help would be welcomed.

By additional motor, are you referring to the Z-axis, with the motor already attached? (Z-axis motor - shorter in length than the other 2.)

Scroll down to “Z-Axis Upgrade Kit” : CrossFire Assembly Guide | Langmuir Systems

In this pic, you can see as @Simsworx said, the motor is assembled to the top of the Z-axis torch mounting hardware.