Thingiverse
Anycubic i3 Mega Linear Rail X-Axis
by Thingiverse
Last crawled date: 5 years, 9 months ago
I made this thing for myself. However, if it helped you out, please consider a donation via http://bit.ly/Bart3d or the TIP DESIGNER button.
Please note:
this write up may not be complete. Let me know if you run into any issues
I made a minor change (0.5mm smaller bearing block) to the design which I have not tried yed. However everything should be fine.
Who this is not for:
If your i3 Mega prints like rubbish, this mod is not for you. The i3 Mega is a good printer out of the box. This mod will probably not help you improve print quality.
Who this is for:
For those who like to tinker, and can customize and flash Marlin.
If you want to use the E3d Hemera without sacrificing build volume.
For those not using the Hemera and can design their own mount using the provided STEP files.
If you need to replace the X-axis rails & bearings. This is an alternative replacement.
If your X-axis sags in the middle (often confused with a warped bed).
This mod works best with a reverse bowden tube (see below for a link).
STEP file has been added so you can mod or view the complete assembly.
General parts needed:
370mm 2020 I-type extrusion (V-slot most probably will not fit as is)
300mm linear rail and MGN12C carriage (with a small amount/ micro pre-load)
6 or 9mm wide 'Gates' belt (Stock one might be too short)
6 or 9mm 'Gates' pulley
6 or 9mm 'Gates' idler (the stock idler will NOT fit)
Mechanical endstop: the most common available style endstops
2x decent clamping style lead screw couplers (if you have not yet already replaced the stock ones).
Stock parts you can reuse:
2x LMUU8 bearing (you can re-use the one from the X carriage you no longer need)
2x Lead screw nut
2x Lead screw
X axis stepper motor (not verified though, and probably only with the 6mm belt. I am using a non-stock motor)
Maybe some of the screws, I didn't keep track....
Hemera mount screws & nuts:
4x M3x12mm screw to mount the extruder (do NOT use anything longer, or you will damage the Hemera)
2x M3x10mm for the belt lock
2x M3x10mm to mount the carrier to the MGN12c
2x M3x18mm to mount the carrier to the MGN12c
1x M3x30mm for the mechanical endstop trigger
Motor carrier screws & nuts:
4x M3x20mm hex socket screw (for the stepper)
2x M3x4mm for the mechanical endstop
2x M3x14mm for the lead screw nut
4x M3x25mm for the bearing block
4x M3 hex nuts for the bearing block
1x M3x30mm for the mecanical endstop trigger
1x M5x10mm hex socket screw (to mount to the extrusion)
1x M5 slot 5mm spring loaded nut
Idler carrier screws & nuts:
2x M3x14mm for the lead screw nut
4x M3x30mm for the bearing block
4x M3 hex nuts for the bearing block
1x M3x30mm for the mecanical endstop trigger
M5x10mm hex socket screw (to mount to the extrusion)
M5 slot 5mm spring loaded nut
Idler tensioner parts:
M5x40mm hex screw
M5x25mm socket head screw (for the idler)
M5 lock nut
My i3 Mega designs:
E3D Hemera mount: https://www.thingiverse.com/thing:4108098
Reverse bowden: https://www.thingiverse.com/thing:4164138
LCD adapter: https://www.thingiverse.com/thing:4104206
Y belt tensioner for up to 9mm belts: https://www.thingiverse.com/thing:4127878
3 point bed levelling: https://www.thingiverse.com/thing:4131685
Please note:
this write up may not be complete. Let me know if you run into any issues
I made a minor change (0.5mm smaller bearing block) to the design which I have not tried yed. However everything should be fine.
Who this is not for:
If your i3 Mega prints like rubbish, this mod is not for you. The i3 Mega is a good printer out of the box. This mod will probably not help you improve print quality.
Who this is for:
For those who like to tinker, and can customize and flash Marlin.
If you want to use the E3d Hemera without sacrificing build volume.
For those not using the Hemera and can design their own mount using the provided STEP files.
If you need to replace the X-axis rails & bearings. This is an alternative replacement.
If your X-axis sags in the middle (often confused with a warped bed).
This mod works best with a reverse bowden tube (see below for a link).
STEP file has been added so you can mod or view the complete assembly.
General parts needed:
370mm 2020 I-type extrusion (V-slot most probably will not fit as is)
300mm linear rail and MGN12C carriage (with a small amount/ micro pre-load)
6 or 9mm wide 'Gates' belt (Stock one might be too short)
6 or 9mm 'Gates' pulley
6 or 9mm 'Gates' idler (the stock idler will NOT fit)
Mechanical endstop: the most common available style endstops
2x decent clamping style lead screw couplers (if you have not yet already replaced the stock ones).
Stock parts you can reuse:
2x LMUU8 bearing (you can re-use the one from the X carriage you no longer need)
2x Lead screw nut
2x Lead screw
X axis stepper motor (not verified though, and probably only with the 6mm belt. I am using a non-stock motor)
Maybe some of the screws, I didn't keep track....
Hemera mount screws & nuts:
4x M3x12mm screw to mount the extruder (do NOT use anything longer, or you will damage the Hemera)
2x M3x10mm for the belt lock
2x M3x10mm to mount the carrier to the MGN12c
2x M3x18mm to mount the carrier to the MGN12c
1x M3x30mm for the mechanical endstop trigger
Motor carrier screws & nuts:
4x M3x20mm hex socket screw (for the stepper)
2x M3x4mm for the mechanical endstop
2x M3x14mm for the lead screw nut
4x M3x25mm for the bearing block
4x M3 hex nuts for the bearing block
1x M3x30mm for the mecanical endstop trigger
1x M5x10mm hex socket screw (to mount to the extrusion)
1x M5 slot 5mm spring loaded nut
Idler carrier screws & nuts:
2x M3x14mm for the lead screw nut
4x M3x30mm for the bearing block
4x M3 hex nuts for the bearing block
1x M3x30mm for the mecanical endstop trigger
M5x10mm hex socket screw (to mount to the extrusion)
M5 slot 5mm spring loaded nut
Idler tensioner parts:
M5x40mm hex screw
M5x25mm socket head screw (for the idler)
M5 lock nut
My i3 Mega designs:
E3D Hemera mount: https://www.thingiverse.com/thing:4108098
Reverse bowden: https://www.thingiverse.com/thing:4164138
LCD adapter: https://www.thingiverse.com/thing:4104206
Y belt tensioner for up to 9mm belts: https://www.thingiverse.com/thing:4127878
3 point bed levelling: https://www.thingiverse.com/thing:4131685