NexGen3D: NXG-3D3 - High Performance 3D Printer

7/10/2025

Its cleaning up nicely, wont be long and I will start testing the motion system:

5/10/2025:

Slowly coming along, hoping to start the wiring this week so I can at least start testing the motion system:

3/10/2025:

Had a chance to do some more work on this project, finished off all the cable covers and body trims, everything has copious amounts of room for cable runs/management, added my logo and printer model and designed an alternative corner cap for a more aesthetically pleasing finish:

28/09/2025

Finished off the design work on the gantry and belts:

25/09/2025:

More housekeeping completed, redesigned the bracing to be more compact and stronger:

23/09/2025:

Finished the panel clamps and door hinges.

21/09/2025:

The Printer cleaned up pretty good, so I'm progressing with the project, Ive now completed the trims, panels and panel clamps:

I've also completely redesigned the belt clamp and tensioner system, this fare easier to use, is less complicated, lighter and stronger, this one is designed for 9mm GT2 belt for maximum strength, I printed my prototypes from PC-ABS, I've also designed this one with look through inspection window so you can see how much adjustment you have left.

New one installed with perfect linear belt alignment:

The original, with poor belt alignment and terrible belt tensioning system:

19/09/2025:

Just pulled this thing out of storage, maybe I should have stored it better? I wonder if I can save it….

Nearly 2 years of dust and other crap, the gantry rails have surface rust, but that area is not where the bearings run, so I think they're still good……

This is just a place holder as I'm still working on this and would like to gauge interest as its a massive task to complete the project.

Background:

I started designing this printer around 2.5yrs ago, originally it was called the 3Dimension-200 and I had built several small 200mm3 prototypes, then I decided to increase it 300mm3 and started from scratch, and after 100's of hours in CAD I came up with the 3Dimension-300, but it actually works out to having a build area of 320x320x380, so my base line was minimum 300mm3.

I originally was developing this as a commercial product to sell, but due to the pervasiveness of Bambu Labs printers, and not having enough spare time to work on it, i shelved the idea stopped construction at about 80%, so for around 18 months I have been staring at  my almost complete machine wondering if I should even bother, and today, I decided I will start the project again, but I will now just share it for free, and hopefully someone will be interested in helping me with the project, mainly on the Klipper side of things.

Cool features of this printer:

• 8 Wheel drive gantry system
• Balanced gantry In both X and Y
• Short length offboard timing belts (so nothing attached to the tool head)
• Fast removal of tool head via 4 thumb screws
• Tri axis self leveling bed (similar to the Voron Trident)
• Tool head has accelerometer, eddy current and nozzle load cell sensors built in
• Uses a berd-air part cooling system, but I may consider changing to a CPAP system instead
• Unique frame joiners for easy perfect alignment and can compensate for up to 25mm length difference in extrusions
• All linear rails
• Single CAN Bus cable to power the tool head

There is many more features I had lined up for this but I will disclose more as the project develops, but I will share that I also have a multilateral system that is around 90% complete as well, called the FRS (Filament Routing System) also was shelved, but I will dust this project off and and start a separate listing for that one as I would really like some help from the community on the software side.

Below is the unique gantry system I designed:

This is the quick removable tool head:

Chassis: