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Possible printer definition problem in Cura?

Posted by Bernie 
Possible printer definition problem in Cura?
June 11, 2019 08:13PM
Well. I built a custom printer. RepRap coreXY . I’m ready to print. Tried today. Fired up all printer systems and ran operation check. Loaded object file with my custom defined printer selected in CURA. Sliced it saved it to SD card. Plugged it into my MKS sbase, 1.3, 32 bit/ tft 3.2 screen. Went to print icon and confirmed, then found file on the SD card. Printer started to print the “test XYZ cube” from Thingiverse. In the front left corner in a small square like it was going to print correctly then shot from homing at front left corner to rear right corner which over shot glass bed and I shut down immediately. I centered cube in my bed representation on cura before slicing and saving to SD card. Any ideas?
Re: Possible printer definition problem in Cura?
June 12, 2019 04:14AM
It can be a whole array of issues. For example, firmware settings, axis offsets, but could also be printer definition.

Is this the first ever print your making with the printer and did you test out the movement constraints with a program like pronterface? You can then test if your steps/mm are set correctly for example, and see if the max-distances are set correctly. You will also immediately notice if you maybe have an axis going the wrong way etc etc.


http://www.marinusdebeer.nl/
Re: Possible printer definition problem in Cura?
June 12, 2019 11:08AM
Quote
Bernie
Well. I built a custom printer. RepRap coreXY . I’m ready to print. Tried today. Fired up all printer systems and ran operation check. Loaded object file with my custom defined printer selected in CURA. Sliced it saved it to SD card. Plugged it into my MKS sbase, 1.3, 32 bit/ tft 3.2 screen. Went to print icon and confirmed, then found file on the SD card. Printer started to print the “test XYZ cube” from Thingiverse. In the front left corner in a small square like it was going to print correctly then shot from homing at front left corner to rear right corner which over shot glass bed and I shut down immediately. I centered cube in my bed representation on cura before slicing and saving to SD card. Any ideas?

I have seen CURA do this with two of my reprap printers. I updated from CURA 3.6 to CURA 4.0 on one of my Delta printers, the print started out correctly, then moved off past the print volume and kept trying to go further until I shut it down.

Then, using CURA 3.6 on my reprap Cartesian, via Octoprint, The printer homed and moved to the far back right and started printing, moving in the Z direction but stayed in my farthest extreme corner dumping filament. The next time I sliced the model, it worked correctly. Then the time after that, again it moved to far back right. I then figured that it was Octoprint biffing the print and started using the SD card. Same behavior, a couple of prints went fine, then the next one, off to the corner. This printer however has worked with CURA 3.2 through 3.6 over USB or Octoprint for over a year, then... Interestingly, Simplify3D prints have been flawless over Octoprint.

I have never been able to cure the CURA 3.6 to Cartesian printer issue. I use CURA 3.6 on other printers through Octoprint fine.

So, after that long-winded sympathetic whine... I will be very interested in anything that you discover! My printers are RAMPS-based or Rambo boards, no attempt at 32-bit systems just yet.

DLC


Kits: He3D K200 Kossel, Folgertech Kossel 2020 upgraded E3Dv6, Anet A8 upgraded E3Dv6, Tevo Tarantula enhanced parts and dual-head
Scratch: Large bed Cartesian, Linear slide Delta, Maker-Beam XL Micro Delta
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