Dave90807

Greg, Now, I'm sweating bullets. Carpenter's square, extruder calibration, calibration cube! I bought the "kit" printer, it worked for a number of years. So far everything has been 'fixable' and straight forward when it didn't. I'm going to take a deep breath and let all this sink-in. Thanks for everything so far, Dave Follow-up (3 days after above post): Special thanks to those who created the YouTube videos explaining all and to you Greg for the description of the process. As shown the solution is straight forward. There was no need to panic. The annotations next to the images shown should be enough to explain the end of this successful post. Good luck to all who read this. Dave

Thankyou Greg. I will study your procedure and update my progress as I work through this 'personal steep learning curve.' Your notes are very detailed, explaining why each step is performed and I am very grateful to you for the time it took to meticulously present the process. I have never knowingly or intentionally changed the Home Offset. So, I assume the Home Offset is still the same as the Auto Home position. The printer alway returns to a position just in front of the print bed when I click the knob with 'Home Position' selected. I'm still leary about fiddling around with settings when I don't completely understand them. But, I'm not getting any younger. It's time to learn. Furthermore, It seems everything goes haywire at once. Now, I suspect that the cause of the filament not sticking to the bed (as shown in the photos) could be caused by a very slightly clogged bodum tube. As I feed the material past the pinched-open advancement gear, I feel a tiny bit more drag than usual. Does the photo above tell you that I'm onto something, with this shot-in-the-dark? But to eliminate that the failure to stick to the printbed is not a problem with this brand new roll of Sunlu filament, I've tried printing a bit of the same model, with the same settings, with a previously dependable roll of SunLu PLA that has worked flawlessly in the past. The result is better than than the newest roll, but not without suspicious looking areas marginally adhered to the mat. (see the image of the newest test print)

I am also encountering the same 'centering' issue as Brassovits. I've set Cura to my Ender 3 Pro. I see that the Settings | Printer | Manage Printers | Machine Settings | Printer Settings are: X=220.0, Y=220.0, and Z=250.0 and the Extruder Settings on that same page are: Xmin= -26, Ymin = -32, Xmax = 32, Ymax = 34, Gantry Height = 25. This is the first time I've tried to print something that extends nearly to the limits of the printable area (209 mm X 209 mm). Yet, as you can see in the images, Cura places the print FAR to the front and left side of the print mat. This centering ultimately, I think, interferes with adherance to the mat where the heating element of the bed is 5 mm inset from the edge, causing the surface, there, to be too cool. I'm printing with SunLu PLA+ Silk Black and don't have any experience with this product. I'm only guessing that the adherance problem is not actually a problem with the filament itself. The extruder temp is 220 C, Bed 60 C as recommended in the resources that I can find. So, there's that! (Whew, did someone say complicated?) I know as stated above that "centering" is complicated. Is it possible for a genius to look at the numbers above and the photos and tell a novice like myself exactly what I might try to correct this and get the print centered? Thanks, Dave