Voron Trident Belted Z

Belt all the things.

About The Project

This mod is the combination of multiple ideas for belted system for the Trident Z motion. Most of the inspiration came from X0, which uses NEMA 17 gearboxes. The main goal was to use 9mm belts for Z motion while keeping most of the original Trident skirts and not relocating Z steppers to the top of the printer. We give credit to bythorsthunder for his Orion belted mod, which has also been proven efficient and easy to assemble (the same applies to the belted z motion mod introduced by MathematicalPotato).

General Info

The design offers two different options for the Z idlers:

MathmaticalPotato Idlers:

• Uses existing XY front idlers
• Limited to ONLY 9mm wide pulleys (12mm overall width)

  

DoubleT XYZ Idlers:

• Modified version of the Ramalama2 idler design
• Z idler pulley integrated into XY idler
• More flexibility in Z pulley width

  

Refer to the CAD drawing for detail on both Idlers. BOM contains sections for both.

Update History:

May 31st 2024

• Added motor mounts and skirts for larger gearbox 'precision' motors
• NOTE: These motors are recommended for larger bed sizes 300+
• Added Z idlers for DoubleT / Fabreeko 9MM metal gantry

April 2024

• Monolith Gantry Support added

November 30th 2023

• V2 Beta idlers added

October 12th 2023

• Raised the bed standoffs on the carriages by 6mm.
• This should improve compatibility with slimmer beds and most iterations of Tiny-T.
• NOTE: Requires a change from M5x16 to M5x25 fasteners for the carriage to the bed frame.

July 23rd 2023

• Added belt/stepper covers for inverted electronics by Panzarkatten

July 3rd 2023:

• Revised rear motor mount and idler. Orientation of the motor turned 90 degrees. New idler replaces the rear bracing from Z extrusion to A/B drive extrusion
• New front idler option added. Integrated the Z idler pulley into DoubleT's modified Rama idlers.
• Cleaned up the CAD
• Added motor skirts for 350mm build size

Tiny-T considerations:

The Tiny-T supports the use of either MGN9 or MGN12 linear guides on the X axis. This mod is compatible with MGN12 / Afterburner/Stealthburner style toolheads without modificaiton. MGN9 based systems using V0.2 style toolheads will position the nozzle 5-6mm higher than AB/SB configurations. This results in the bed being unable to reach the nozzle before colliding with the Z idlers. V3 Z carriages should resolve this travel limitation, but this assumes the use of a 6mm build plate with a 1mm magnet. Magbeds may need additional spacing.

Bill Of Materials

Required parts:

• 3 NEMA 17 Precision planetary steppers

  • Recommended for larger bed sizes.
  • Higher Gear Ratio, lower backlash
  • OMC Stepperonline or

• 3 NEMA 17 Economy planetary steppers

  • Ali Express
  • Amazon

• 9mm GT2 belts

• 3 9mm 20T GT2 drive pulleys, 8mm ID

• 3 9mm 20T toothed idlers, 5mm ID - Gates/Runice recommended. (Overall width of less than 14mm, Flange diameter less than 16mm)

• 9 M3x12 Button head screws (mounting gearmotors)

• 8 M3x30 Socket head screws (Front Motor Bracing, Rear Z carriage mounting)

• 2 M3x35 screws (Front Z belt tensioners)

• 1 M3x40 screw (Rear Z belt tensioner)

• 7 M3 heatset inserts (Front motor bracing, Z belt tensioners)

• 2 M5x35 screws and nuts (front idlers)

• 1 M5x25 screw and nut (rear idler)

• 1 5mmx30mm dowel (Rear Z Idler Shaft)

• 20 M5x10 screws and hammerhead nuts for mounting motor mounts and idlers

• 1 M3 x ? length screw - Length determined by motor chosen. Remove one screw from the nema17 motor housing and replace with longer screw for the rear motor stabilizer.

• 3 M5x25 BHCS - Z carriage to bed frame

Mathematical Potato Idlers:

• 2 M4x20 Socket head screws and hammerhead nuts
• 2 M5x40 Button head screws
• 2 M5 nuts
• 2 M5x15 Button Head Screws

DoubleT XYZ Idlers

• Reuses existing fasteners for securing idler to Y extrusion
  • 4 M3 heatset inserts
  • 4 M3x30 Button head screws
  • 2 M3x12 Socket head screws
  • 2 M3x20 Socket head screws and hammerhead nuts
  • 2 5mm x 25mm dowel
  • 2 5mm x 20mm dowel
  • 4 6mm x 3mm magnets

Authors

• genevamotion - * - genevamotion - CAD design/ Modeling / Testing*
• thiagolocatelli - * - thiagolocatelli - CAD design / Modeling / Project Management*

Acknowledgements

• MathematicalPotato
• bythorsthunder
• Annex Engineering
• Voron Design
• Ramalama
• clee

Images

Sample config (Manta M8P) - Economy Gearbox

[stepper_z]
step_pin: ###
dir_pin: ###
enable_pin: ###
rotation_distance: 40
gear_ratio: 57:11   
microsteps: 32
endstop_pin: ###

##  Make sure to update below for your relevant driver (2208 or 2209)
[tmc2209 stepper_z]
uart_pin: ###
interpolate: False
run_current: 1.0
sense_resistor: 0.110
stealthchop_threshold: 0

Builds

Panzarkatten