CNC Clamp-On Surface Probe

I didn't fancy chasing the ER11 around to make sure the touch plate is always under the cutter so came up with this Clamp On Probe. It clamps on where the spanner goes on the ER11 so it pretty much sits in the same pposition every time.

I designed it in Tinkercad and printed it with PLA using a 03 LH/0.6mm nozzle and 20% infill. Some parts need supports

Things I used:
To connect the touch plate to the clamp:
M4x75mm machine screw. You'll need 2xM4 nuts at the top to lock it so it doesn't turn on it's own while probing.

Spring, 4mm inside diameter 20mm long, the type used on 3D printer beds

Push the M4x75 up from the bottom of the touch plate. Push the spring on and then the "Spacer". Push the screw through the "Clamp Front" and put the 2xM4 nuts on. Adjust height of the probe with these screws and lock them together.

For the back of the clamp probe.
M3x25mm machine screw. This is the part that makes contact with the ER11 to close the elecrical circuit. You'll need 3