So…before quitting further development of my mpcnc (cool design, awesome learning experience, lots of fun but with inherent limits that keep me from doing what i want to do sucessfully…no bad feelings at all) and building something else I wanna give it a shot in rethinking/upgrading the center…thingy (first). This is where all the problems come from that i just cannot fix in any other way than reprinting 8hr+ parts over and over without knowing if it will actually help anything or if the design is just not able to handle what i throw at it (i might have hit the limit, nothing against the design). The feeling is absolutely frustrating and i won’t go down that road.
This project will be considered an upgrade to improve existing machines and i dont have any intention to alter the original design with this. More like an optional retrofit for ppl that have hit thier limits and want to push it a little further.
Main Goals are:
- More rigidity.
- Better adjustment of all individual axis in each individual axis.
- Ability to mount diffentent z axis “modules” (including a rework of the stock one)
Before starting I want to ask @vicious1 for explicit consent. Just feels like the right thing to do.
Before coming up with more than an abstract image in my head i also wanna ask for access to the plans, measurements and some models for the mpcnc and the lowider to get the design done as accurately as possible.
The plans and models will be usesd only for the realization of this project and not be made available to any 3rd parties.
No public releases will be made without explicit consent (again…right thing to, respect 'n stuff…)
So here’s the plan:
Use of a reinforced 3-5mm steel angle to keep X/Y aligned as close to 90° as possible.
Mount roller plates to that angle using some sort of interfacing plates (acrylic, hard wood).
2.1 Roller plates can be adjusted with setscrews or shimmed to the correct angle
–> Now we should have a rigid 90° angle riding on X and y paralell to the work surface.
By using 45° angles a Z-Plate will be mounted perpendicular to the 90° XY angle.
Z-Axis will inserted into gudies that mount to the Z-plate. To achive this, the existing Z-Mounts have to be redesigned accordingly.
No not really. This thing will get heavy so pipes will most likely become a limiting factor. To add rigidity at this point i plan to insert a square tube into the pipe to increase thier strength.
Even more Weigth added. Nema 17s might hit thier limit. Consider 23s.
This will most likely turn into the biggest sink of time and money i can imagine so…lets’go!