INDX Filament Sensor mount for Rear / Wall mounted filament

Warning: during testing (finally recieved INDX) it has come to my attention that the lid does not clear the filament sensors. 

It may work for some of the more upright filament sensor mounts but at a certain point it fouls the lid.

I will be making alternative models that move the 2020 further back.

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Want to mount your INDX Filament Sensor on the rear of the printer where the PTFE guides are currently? Well this is the model for you!

This model was created using the footprint of the Prusa INDX PTFE holder. You will need to source a 2020 Aluminium Extrusion and other materials detailed later. If you have an old Ender 3 that you no longer use and are willing to split it up for parts this model was designed to use the top gantry extrusion which is 330mm long.

This project is split into three separate sections

Extrusion Supports

You will need to print the two models in  'Extrusion Support/Both Supports.3mf'. These have been oriented correctly for you with the rear angled part flat on the print bed.

Each support is marked with a L and R on the base and this refers to the back left or back right facing from the front of the printer.

There is a single PTFE slot and two wire slots for your use. These were modelled after the Prusa part and are untested because I do not have my INDX system yet.

Filament Sensor Mount

Multiple angles of Filament Sensor mounts have been provided because not everyone has the same needs. This should cover most angles required and if you need more than 75 degrees you can just use the 0 degree holder and turn it on the extrusion.

• 0 degree

• 15 degrees

• 25 degrees

• 35 degrees

• 45 degrees

• 55 degrees

• 65 degrees

• 75 degrees

WARNING: Please note that these mounts are only designed to hold the sensors with the input facing in a specific direction because of the tab / notch design.

Number Plate

Because of the orientation of the filament sensor it means the numbers on them will now be flipped upside down. You can print this plate and stick it on the Prusa provided sensors so you can read them easier.

These models have been provide with separate number bodies so you will need to assign the correct tools as required because I do not have a multiple tool printer (yet).

You will also need:

Materials:

• 1 x 2020 aluminium extrusion 330mm long

Fasteners (for mounting two filament sensors):

• 2 x Compatible T-slot nuts

• 2 x Socket Cap Bolt for T-slot nut & washer

• 2 x M3x10 Socket Cap Bolt (for back of filament sensor, the parts supplied in the INDX kit MAY fit)

• 2 x M3x8 Socket Cap Bolt (for the support pillars, this parts supplied in the INDX kit should fit)

• 2 x M5x12 Socket Cap Bolt & Washer (for ends of extrusion)

• 2 x M3x5 Socket Cap Bolt (for the wire & PTFE clamp plate)

Tools:

• Allen / Hex Keys

• M5 tap set

Examples shown in photograph are the 45 degree model using M4x6 socket cap bolt & a T-slot nut sourced from an old Ender 3. The orange part shown in photos is a printed test piece from the Prusa model.

Preparation steps

You will need to tap the holes on the end of your aluminium extrusion on both ends, depending on the length of your bolts. To do this use a M5 tap of the same thread pitch as the bolts you have selected.

Parts from the following models were included in this project