Hello Everyone… its been awhile, I was able to successfully build 2 MPCNC 3D printing machines with the common 30" x 30" square bed sizes…
I used them to print and build a fully functional BB-8 droid from Star Wars.
Running latest RC8 with LCD (I use the LCD only now - no PC).
I am using all Vicious mechanical parts (bolts, nuts, bearings and steppers etc). I am using the RAMPS board which was also purchased by Vicious. I verified all Vref is set to .65 (have tried .55 and even .75 - too hot).
Here is my issue - I had the 2nd printer tore down for a bit and re-assembled it. I decided to update the new Middle section only (the corners and motor mounts are original versions).
Here is the issue… it is not smooth rolling along those axis… at first it was very tight getting that middle onto the original conduit arms (these are the C or 23.5 conduit). I rolled it back and forth on both axis for quite a while and it finally loosened up… (digging into the conduit making its tracks).
I noticed I kept stripping the pineapple connector between the stepper and the 5/16 (on the stepper side) and I keep re-printing this out and replacing… but its effecting the Z motion - almost seems like its moving it way too fast.
Photos: showing the print temp, and percentage being turned down to 80 to compensate and get better printing - howbeit issues mechanically still.
I also notice that unless I speed it down to 80% I get a somewhat decent print (there is still some issues with the infill not touching 1 edge of the sides from time to time).
I also tightened and loosened the belts to see if it made some impact…not much.
Here is a video of the printing of a part… at 80% still making crunching noise and not as much hardware issues running slower.
Mechanical Printing issues with MPCNC and C middle
What could be causing the vibrations and stickiness on the middle when it tries to move… it gets caught up or it moves fine… its random.
Lessoning the speed means that I am printing too fast? I am using the firmware suggested by Ryan to print with… unless that is for the CNC side not the 3D side?
Need insight as to where I can go from here.