Spyder CNC Machine comes with ER11 collet with 1/4" diameter tooling. When you install a new tool, please follow the steps below.
Press Emergency-Stop before changing end mills.
Type T1 M6 on the MDI screen. The machine will bring the spindle to the front location of the machine for easy access. (13mm and 17mm wrenches to loosen and tighten end mill holder nut). Click to Continue when you are ready.
Disengage Emergency-Stop: rotate to the right until it clicks back into its original position.
After changing bits, touch off the z-axis if continuing to run the same program file.