A8 Mount for E3D, Titan Extruder Direct Drive and BLTouch

Description

This is an X-Axis mount for an original E3D-V6 hot end with a direct drive E3D-Titan extruder. This design moves the extruder up (closer) to the horizontal x-axis rails which gives about 23mm more Z height capability than the stock design. Unfortunately for those using a stock ANET A8, it also moves the nozzle about 23 mm further away from the rails. With that AM8 frame, this can easily be corrected by sliding the X-axis supports back so the full table can continue to be used. It uses the existing rails, stop switch, stepper motor, and fan as the ANET A8. I designed it to keep the x-axis stop switch in exactly the same place it was on my machine as well as keeping the orientation and position of the blower fan the same so you should be able to continue using any blower nozzle design made for the A8. I also put in holes to allow use of the X-Belt bracket from Digital_Sqrt https://www.thingiverse.com/thing:2821719 The pictures of the assembly on the machine are from 1 rev old (shown printing the replacement). The holes perfectly lined up with my bearings but I enlarged them a bit in the final design to allow some adjustment if needed. I also added several hoops to allow wiring to be zip tied to the carrier either to the left or right of the nozzle. The two holes on the right are for a bracket to mount a BLTouch sensor. Update: I've added the BLTouch sensor using the bracket in the files. One very important note! Although the E3D website and prints show a minimum of 2 - 4.5mm. I made the mounting plate 3.5mm thick and the supplied M3x30 bolts were too short! M3x35 would be ideal, but I wound up using 3 M3x40 and used 2 M3 nuts on each bolt as spacers. This actually worked really well, but why E3D provided such short bolts is beyond me. I built this with 30% infill which seemed to be plenty. With the Cura slicer, I did need to check the "Union Overlapping Volumes" option under Mesh fixes to keep the fan mount from having a very small gap in the back. Sometimes I just hate the way Sketchup and Cura play together. Update: June 6th, 2019 I finally got around to designing the BLTouch bracket and uploading it here! With the short nozzle on the E3D hot end, it is a fairly tight fit under the extruder motor but it works perfectly. I would recommend threading the BLTouch connector into the holder first, then attaching the BLTouch to the holder, then the holder (loosely) to the mounting bracket and finally the mounting bracket to the A8 Mount. Once the mount is in you can route the wires from the hot end and BLTouch out under the servo, raise the BLTouch to the top of the bracket and tighten everything up. On my set up, there is about ~3-4mm of clearance between the print tip and the retracted end of the BLTouch. The basic design of the small bracket that holds the BLTouch was from someone else on Thingiverse, but I downloaded it so long ago I forgot who did it. I apologize to that forgotten someone! Update 12/25/2021: Finally got around to recreating the file in Fusion360. The Fusion360 file as well as the 3 new .STL files from it are now in the files area. Hopefully this will fix the open geometry issues in some slicer programs. Only design update was to add a support between the 2 fan holes. After 2 years of printing, I managed to catch the fan air deflector on a gobbed up piece of plastic and it broke the tip off the fan mount. The brace should make that area a bit stronger.

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