E3D Titan Aero mount
Using a Titan Aero adds width to the X assembly and reduces X travel compared to the standard design; the amount depends on the motor and fan used. With a 20.7mm motor and 7mm fan I am limited to 295mm of travel in X with approx 1.5mm clearance either side. My frame extrusions and shafts are based on 300x300x300mm in the configuration spreadsheet. That gives an idea of how much X travel to add for anyone planning to use this extruder.
20.7mm motor, 10mm (stock) fan - add 3 + 5 = 8mm minimum (I would round that up to 10mm)
25mm motor, 10mm fan - add 3 + 4.3 + 5 = 12.3mm (or round up to 15mm)
There are two additional bosses on the back side of the carriage for threaded inserts; these are used to mount the fan duct. If you don't need a part cooler, you don't need this modified X carriage.
I will be using the Mini Differential IR sensor (https://miscsolutions.wordpress.com/mini-height-sensor-board/) as a Z-probe. E3D_TA_Mount_IR includes the mounting holes for this.
Version 1.1 (E3D_TA_Mount_IR_1.1) adds cable support and removes the X max optical end stop.
Uses two more threaded inserts to mount the fan duct.
I printed this in three parts then superglued them together. For now I have omitted the top fan screw because it can contact the back of the frame.
The mount and clamp work with an 8mm diameter stem as found on the Banggood digital indicator shown in the pictures.
Indicator_Mount_1.1 adds support for the back of the indicator to stop it moving when pressing the zero button. Might only fit this model of indicator.
Indicator_Mount_Y is for checking motion in the Y direction (against the front frame).
The indicator mount can be rotated 90° (thanks to the square hole pattern SCOTT_3D uses for the dowel pins) in order to test and calibrate movement in the X direction. This end stop mounts (temporarily) on XY_Stepper_Mount; I used M3x12mm screws. As you lose the X end stops when removing the extruder mount, G92 X10 can be used once the X carriage is jogged into the start position, hopefully preventing crashes.
Step-down module mount
For mounting the e_goto 24 to 12V converters from SCOTT_3D's BOM (https://www.aliexpress.com/item/DC-DC-24V-18V-to-12V-3A-Step-Down-Module-MINI-Buck-Converter-Power-Supply-Circuit/32778770850.html?spm=2114.13010608.0.0.G2tjiK or https://www.aliexpress.com/item/DC-DC-Step-Down-Power-Supply-Buck-Converter-3A-Fixed-Output-14V-28V-to-12V/32636205942.html). 28mm hole spacing for M4 screws.
(Inspired by https://www.thingiverse.com/thing:875468).
I'm using this with a length of M8 threaded rod and
these https://www.thingiverse.com/thing:2532403 spool holders.
The screws on the X carriage are good for fine-tuning belt tension, as well as squaring the X/Y axes, but this tool should help with overall tension.
Currently for 8mm X-shafts, 45mm X-shaft spacing and 11mm belt spacing. 10mm shaft version (untried, untested) here https://www.dropbox.com/s/xpcaoxigcuwk47n/Tension_O_Matic_10mm_1.1.zip?dl=0.
03/09/2017 - Added Indicator_Mount_1.1
10/09/2017 - Added X_Indicator_Stop_1.0
13/09/2017 - Added Spool_Holder_Clamp_Top/Bottom_1.0
27/09/2017 - Added Tension_O_Matic
28/09/2017 - Added Indicator_Mount_Y_1.0
04/10/2017 - Added E3D_TA_Mount_IR_1.1