@russell-baskin Try a different Cad software and see if you get the same or a proper result

@russell-baskin I would try to figure out first where the problem is the design of the nuts and bolts or the printer. Print a zylinder and a box and then measure the X and Y and see how they stack up might be the math on the X and Y are slightly off (steps per mm etc)

@cope413 But then I was told the Rambo doesnt need cooling either up to 60 C...... Rule of thumb if an electronic part on a board or otherwise gets hot to the touch put a fan on it and/or a heatsink JMO

@tinken Interresting. As mine is apart I was considering going to closed loop motors on the steppers and go to an SKR board . But right now I got more important projects

@surfmagic The temp inside the enclosure does not matter what matters is the temp of each chip like for example the temp in the enclosure can be 40 but the bed might be 100 so a particular chip or mosfet could be well above its rated temp. So you can easily see that on the board if you take a pic with a thermal camera or just put your finger on different parts of the board and you will feel a definite temp difference

@thwclw Put a fan on anyway. Most commercial chips are good to 80 C and many above that so I doubt you exceed 50 in the chamber so even blowing 50 C air on an 80C chip is cooling. And you got mosfets etc in there that produce quite a bit of heat. any board that drives a 30+W hotend and a bed needs a fan.

@thwclw If the electronics box is inside the enclosure that is bad. I put mine outside when I was using it and put a fan on the board because the D model did not have a fan blowing on the board which was quite ridicolous IMO

@surfmagic Usually a printing chamber helps but NylonX is their filament so if anyone knows they should - hopefully. Even though I have stopped calling them ....

@damianoffthegrid I have an older model with a rambo mini board. But the board out to not be the difference.
Here is what I did. I slice in prusa slicer based on an MK2 profile. (I copied the start and end Gcode into PS). Then I save the Gcode file to disk. Then load the gcode file in MC and print. All MC does or used to do is to add the bed leveling to it that means change the Z positions where it is on the field. I was considering writing a script to post process in prusa slicer. But for now its sitting in pieces and I will make my mind what I do with it - it probably will become a very different printer as I was quite unhappy with a range of things. I should have bought 2 other printers for the price of one pulse. Currently I mostly print with Anycubic Chirons. One thing to watch out. IDK what the current version of MC does but some versions did not add the start/end code some did so double check if yo get double start and end code remove it in one of the 2 slicers so you only get it once. I also found that MC is leaking quite badly or at least used to so it pays to after every print - especially if it was a big one - to exit to the desktop and then restart the software.

@thwclw IDK about Cura but prusa slicer works quite fine and the acceleration is set in printer settings. And PS has quite a few advantages over cura atm.