Pretty much at my wit's end
-
I'll try lowering the speed of the first layer, I tried printing a benchy, the brim seemed to print fine, but the actual benchy wouldn't stick in the middle of the bed. I'll also try upping the bed temp and nozzle a bit.
I did go through the bed and nozzle calibration while doing the rest, I think they're well calibrated now.
I'll get this eventually...
-
To help with baby stepping adjustments you can set your M208 Z axis minima value slightly negative like -1 so that you can go below what the firmware assumes is the bed surface, but be careful because it will also allow you to go below what the firmware thinks is the bed surface.
-
So I lowered the first layer speed (down to 15mm) I also bumped up the temp of the plate by 5 degrees (65 now) and the only way I was able to get it to stick was using a layer of glue stick, it's printing a benchy now, I'll see what it looks like after..
-
I found that glass has to be perfectly clean to stick well without using some adhesive. Try giving it a wash with some warm soapy water and then a wipe with IPA.
65c may be the heater temp, but the actual surface may be substantially lower, so don't worry so much about the number, use whatever value works. So try 70, or even 75.
-
I personally like glue stick as it give a release agent also. You can wash the glue stick away from between the part and the bed.
-
So The benchy printed, I still need to do some tweaking to get it printing perfectly, but it's printing now which is important, in celebration, I did a 14 hour print, a little planter with multiple compartments.
It printed out almost perfectly.
Thanks so much guys, your help was what got me back up and running.
-
@Phaedrux I'm using the official creality glass bed, it has some coating on it that's supposed to help prints stick when hot and release when cool, but it still has issues some times, I'll try a cleaning before each print and see if that helps any. In the beginning, I don't remember having to clean the bed every time and it was sticking great.
I'll try to bump it up a bit to see what happens (I can also measure the temp at the surface of the bed, so I can base the setting on that when I do).
-
@Kweakui said in Pretty much at my wit's end:
In the beginning, I don't remember having to clean the bed every time and it was sticking great.
Many moons ago I could run a mile without breaking a sweat, but no longer. We all decline with age in some ways.
-
@Phaedrux True.
-
that is a common complaint on a facebook group for the ender 5's. I just use regular borosilicate glass with the glue.
-
@Kweakui said in Pretty much at my wit's end:
@Phaedrux I'm using the official creality glass bed, it has some coating on it that's supposed to help prints stick when hot and release when cool, but it still has issues some times, I'll try a cleaning before each print and see if that helps any. In the beginning, I don't remember having to clean the bed every time and it was sticking great.
I've tried those Creality glass beds on a couple of my Ender 3's and they work great for a little while but after 20 prints or so things don't want to stick. I just applied a sheet of PEI to the opposite side and print on that. Glass+PEI is the print surface on nine of my ten printers. The tenth one is the printer I built myself and it has Mic-6 aluminum with a sheet of PEI.
TLDR: Get a sheet of PEI for your glass and forget about adhesion problems.
