BIQU MicroProbe mount for Sovol SV08

PLEASE READ THIS NEXT PARAGRAPH CAREFULLY!!!!!!!!

WARNING:  You will need a M2.5x12mm Nylon screw with a washer and nut to install this mount. The attachment to the print trolley has changed, and one of the attachment points is directly behind the Microtouch. The back of the Microtouch is a PC Circuit with no insulation, and if you use a steel screw (or brass, or anything but Nylon) you will likely not be able to use the MicroTouch as the Magic Smoke (TM) will be released.  You will be in the market for a replacement MicroTouch in that case.

Complete redesign for mounting a BIQU MicroProbe.  My prior design is a remix and can be found at https://www.printables.com/model/947550-sovol-sv08-microprobe-mount  That model has instructions for installing the MicroProbe mount itself including wiring and firmware details that I will not repeat here.

Did you order your Nylon screw yet?

I finally received my Sovol hardened nozzle assembly, and found a 3rd party brass nozzle that works in that hot end. The replacement is 1mm shorter, which makes the older MicroProbe mount too low to the print for comfortable clearance.  For a complex set of circumstances, I decided a complete redesign was warranted.

This is significantly stronger and more stable mount. I am including three different stl files, the difference is only the vertical offset of the mount. The number embossed in the front surface of the part is the number of mm the MicroTouch sits below the top of the mount, so a bigger number can compensate for a longer nozzle (and conversely, can run into your print with a shorter nozzle). Since the total elongation of the MicroTouch probe is only about 2mm, this might become critical.

The 3mm mount should work for the standard nozzle.  If you find that the Microtouch drags on your print then go to the 2mm version which will raise the Microtouch by 1mm.  Only use the 4mm version if you have a longer than standard nozzle and the 3mm mount crashes the nozzle into the print bed when homing.

This design is a ring that you drop the MicroProbe into from the top and fasten it with screws from the top into heat set inserts.  

You need a nylon screw to mount this safely and  successfully. See the second paragraph above if you missed it.  (Sorry for the repetition, but I don't want people to say I did not tell them!!!)

See my other MicroProbe  design for details about settings for this device.  The measured offsets I am using with this mount are x = -18.9 mm  and y = 6.2 mm.

Important:  Assembly sequence.

Install (carefully) two M2.5x4x3.5 heat set inserts into the top holes of the chosen mount.

Mount the print head using the top right and bottom left mounting screws, leaving out the bottom right one. That is used as one of the mounting screws for this mount.

Next fasten this mount to the print head using that third print head mounting screw and a M2.5x10  (or M2.5x12) NYLON screw.  I put two nuts on the back of mine. There is a hole in the print head assembly that matches the hole in the mount.

Then put the MIcrotouch into the mount, and fasten it to the mount using M2.5 screws.

Finally wire it and  update the firmware (instructions can be found at the link above) and enjoy!