Anet A8 & Prusa i3 Extuder Carriage with Front Mount 18mm, 12mm, 8mm Sensor or No Sensor and Options!

This is the single extruder version of my other Anet A8 Carriages here:

https://www.thingiverse.com/thing:2766701

https://www.thingiverse.com/thing:2734717

BlTouch version here!

https://www.thingiverse.com/thing:2873811

Get the chain here: https://www.thingiverse.com/thing:3179124

Get the chain here: https://www.thingiverse.com/thing:3179124

Video of it in use:

https://www.youtube.com/watch?v=YpmkxxurtH0

And timelapse of it printing part of the Boombox https://www.thingiverse.com/thing:2788789

https://youtu.be/YOHUB8JxVU8

The cap is setup to use 40mm long M4 hardware. I used socket head cap screws for mine.

There's .STL and the better .AMF that CURA accepts as well as versions with and without sensor and with or without a mount for a chain. This fits most standard chains on Thingiverse but I like this one most: https://www.thingiverse.com/thing:2193695 and am listing this as a remix. I have included that chain file.

For part cooling I recommend Mistral 2.1A 4.5 from https://www.thingiverse.com/thing:2121279

For mounting the belt I used https://www.thingiverse.com/thing:2264558

This is 100% Designed from scratch in Solidworks 2016.

Choose your part and print!

• 18mm Sensor and chain mount
• 18mm Sensor with no chain mount
• 12mm Sensor and chain mount
• 12mm Sensor andno chain mount
• 8mm Sensor and chain mount
• 8mm Sensor and no chain mount
• No sensor with chain mount
• No sensor, no chain
• Smaller sensors put it closer to the extruder but tend to have shorter detection distances.

To use this you must be on Skynet/Marlin firmware and make the changes below:

Get the firmware from https://github.com/thijsk/Skynet3d

For the 18mm probe set :

define X_PROBE_OFFSET_FROM_EXTRUDER 0 // X offset: -left +right [of the nozzle]
define Y_PROBE_OFFSET_FROM_EXTRUDER -28 // Y offset: -front +behind [the nozzle]
define Z_PROBE_OFFSET_FROM_EXTRUDER -0.5 // Z offset: -below +above [the nozzle Set this to your machine. I used a .5mm thick print put between the bed and probe with the nozzle touching the bed to start.]

For the 12mm probe set:

define X_PROBE_OFFSET_FROM_EXTRUDER 0 // X offset: -left +right [of the nozzle]
define Y_PROBE_OFFSET_FROM_EXTRUDER -23 // Y offset: -front +behind [the nozzle]
define Z_PROBE_OFFSET_FROM_EXTRUDER -0.5 // Z offset: -below +above [the nozzle Set this to your machine. I used a .5mm thick print put between the bed and probe with the nozzle touching the bed to start.]

For the 8mm probe set:

define X_PROBE_OFFSET_FROM_EXTRUDER 0 // X offset: -left +right [of the nozzle]
define Y_PROBE_OFFSET_FROM_EXTRUDER -20 // Y offset: -front +behind [the nozzle]
define Z_PROBE_OFFSET_FROM_EXTRUDER -0.5 // Z offset: -below +above [the nozzle Set this to your machine. I used a .5mm thick print put between the bed and probe with the nozzle touching the bed to start.]

And the travel limits are:

// Travel limits after homing (units are in mm)

define X_MAX_POS 240
define X_MIN_POS -10
define Y_MAX_POS 230
define Y_MIN_POS -13
define Z_MAX_POS 230
define Z_MIN_POS 0

You also must set

// Set the boundaries for probing (where the probe can reach).

define LEFT_PROBE_BED_POSITION 20
define RIGHT_PROBE_BED_POSITION 200
define BACK_PROBE_BED_POSITION 200
define FRONT_PROBE_BED_POSITION 20

See my PDF offsets guide here: https://goo.gl/fJyuiC

It is written for my dual extruder carriages but the Z probe offset still applies here for those using a probe.

Here's a crapCAD schematic of the optocoupler board I made to run the 12v probe completely isolated from the RAMPS board.

Updates:
- 2/11/18 Changed fillet on fan mount to make it easier to print.

Please like, comment and share! Thank you and enjoy!