take a look at my other designs https://www.thingiverse.com/mg_evolution/designs
I am in the process of writing a new thing which will have all the files available to download.
As yet i am not releasing the files to make this up. This is due to it being a work in progress and not all the parts being my own (see below)
Please use the designs pictured for reference/ideas on your own project
See - Design 4 Offset X axis.stl
Sections of the design have changed once I printed pieces and found flaws or better ideas.
The design is the same concept but the X bracket has been off set to the rear to make more use of the bed space.
I have mocked up in tinkercad a Z axis for the laser.
The Y axis runner has been moved to the outside to leave the inside build area cleaner and allow the X axis to have full travel.
All the parts are now my own design except for the Stepper motor sample @ https://www.thingiverse.com/thing:1735915
The printed pictures use M5 x16mm button socket with printed spacers. These are temp and will use m5 x 8mm stainless once built.
I have taken my ideas from other thingiverse projects to build on and design this framework how I want it.
On the pictures some of the parts are still some peoples original pieces though modified.
X belt tensioner in pink.
Frame corner mounts in brown.
The frame uses V-slot 1000mm/1mtr 20x20 Aluminium extrusion and 1000mm/1mtr 20x40.
The 20x40 is for the runner of the X & Y axis. The 20x20 is used for the X axis supports.
Using V-slot rubber bearings from bangood there will be 3 wheels per mount that will be adjustable using Eccentric Spacers to adjust the tension onto the 2040 extrusion.
The green Y axis running mounts are the same on both ends. There is a separate module that can be bolted on the so I can prototype the stepper and idler mounts to suit. This will be kept modular in the final design.
I may make 2 different frame corner mounts and make them modular but the Y axis idler does not have to be as strong as the Y axis stepper mount.
The belt will be run through the extrusion with can be seen by the access hole at either end of the X & Y axis. The belt will be secured and tension adjusted on the Y axis mount plate shown in orange/red. Tension is adjusted using a hidden M3 allen head screw inside the sliding adjuster. There is no support for the sliding adjuster due to the tension of the belt holding it against the mount. this may change once prototypes are made
I have not designed the Z axis as yet. Im planning to use this with 450nm 5W Laser Engraving Module which does have a focus ring. I plan to design a Z axis though to allow the laser to move down as it cuts though thicker parts to keep the focus though the material.
I would like the frame to run a small light CNC attachement though I haven't looked at this as yet.
The electronics are still a work in progress. I haven't decided what software to run but I have ordered a RAMPS 1.4 + Arduino Mega 2560. this can run the Z axis if needed but it can also run 2 separate steppers for the Y axis instead of sharing 1 DRV driver between both steppers.
the heated bed is not for this project, the kit was a great deal with the DRV drivers and the heated bed compared to other Ramps kit for sale
I have ordered all the parts except for the Stepper motors and Extrusion.