Z knob for Solidoodle 4 with glass build plate

I loved the Z adjustment knob on my Solidoodle 4 since it made it so easy to accurately adjust the Z stage height.

However, when I upgraded to Solidoodle's glass build platform the Z adjustment knob interfered with the slot in the back and would not go deep enough.

This knob design is a one for one replacement with the original knob except that the screw hole is 3 mm deeper. This allows the for correct Z stage height and keeps the knob high enough to fit in the slot.