print not sticking to bed | 3DMeltdown 3D Printing | Page 1

hallow summit Mar 6, 2023, 3:10 AM

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I’m somewhat new to d3 printing, like 6 months or so…

Today I made a few changes to my Ender 5:

I changed the brass nozzle to a hardened steel nozzle. Original was .4 and so is the new one.
I replaced the original Ender 5 bed with a magnetic PEI. I was constantly applying a glue stick on the original plate, and wanted to stop that and was recommended a PEI.
Had to adjust the bed height and re-level. I use a gauge strip of .004mm as spacing in between the nozzle and the bed on all 4 corners of the bed. This is maybe where I’m going wrong? I was told .004mm gauge strip would be more ideal than a sheet of paper.

The prints are just not sticking to the bed. Any suggestions?

young pilot Mar 7, 2023, 5:13 AM

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can you show a picture of the first layer?

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and also of the gap between the nozzle and bed

hallow summit Mar 7, 2023, 4:55 PM

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Sending a few here. It’s hard to see the gap from picture, but I’m also showing the tool I use to determine the gap. When I slide this gauge under the nozzle and the bed, I can very lightly feel the it touching the nozzle. I do this on all 4 corners and in the middle of the sides. I printed this leveling square, and as you can see, it’s all over. It starts fine, but as soon as the second pass goes by, it drags the PLA with it.

young pilot Mar 7, 2023, 5:14 PM

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in the first image with the gauge theres a bit of plastic on the nozzle

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so the nozzle is farther than it should be

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clean off the nozzle, home it, then relevel using your gauge

hallow summit Mar 7, 2023, 5:20 PM

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I did that actually before doing that test print, I noticed it while taking the picture and re-adjusted. That test print happened after I made the adjustment. The next thing I’m going to try is to heat the bed a little higher. Right now it was set to 50, I’m going to increase it in increments of 5, up to 70 and see if that makes a difference

hallow summit Mar 7, 2023, 5:59 PM

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Follow up after getting the bed to 65. It’s not dragging around anymore, but I’m surprised that all it took was increasing bed temp. Thoughts on this? Does that first layer look good to you from that picture? Thank you for your help btw

quiet harness Mar 7, 2023, 10:24 PM

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Usually what I do is rub my fingers over the first layer a bit and feel for how thick it is you can tell if it's good or not by how tall the filament is on the first layer

hallow summit Mar 7, 2023, 11:55 PM

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Interesting. I’m not entirely sure what the first layer should be like. Is tall good? My thinking has been a shorter first layer would mean it’s more pressed into the plate and forms a better base, but sounds like I might be wrong here.

quiet harness Mar 8, 2023, 1:55 AM

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hallow summit Interesting. I’m not entirely sure what the first layer should be like. Is tall ...

Well if it's too close, it becomes almost impossible to remove

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I have piece of filament on my bed from weeks ago

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Cuz I was too close

pine brook Mar 8, 2023, 9:02 AM

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@hallow summit your coating of the bed is thermal active aka if hot enough it gets sticky. If cold it releases. And with bigger beds or only mediocore isolated ones it can require alittle more or less then is shown on thr filament

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Thats also why mostly powerloss recovery is useless. Because you mostly only have like 5 mins getting the bed up to temp before the print pops off

hallow summit Mar 10, 2023, 9:10 PM

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Ok, took a few days to get back to this as I’ve been busy with work, but I feel like after the tuning and leveling from today that I’m almost there! 200 temp print, 70 bed temp, printed another bed leveling STL, and attached is what it looks like. The only one that looks goofy here is that middle right square. I feel like if this was a level thing, then a corner square would also be messed up. Thoughts?

pine brook Mar 10, 2023, 10:33 PM

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can you post the gcode you used?

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(also refresh my memory on wich printer you have again)

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@hallow summit

hallow summit Mar 10, 2023, 10:46 PM

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It’s an ender 5, about 3 or 4 years old.

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M201 X500.00 Y500.00 Z100.00 E5000.00 ;Setup machine max acceleration
M203 X500.00 Y500.00 Z10.00 E50.00 ;Setup machine max feedrate
M204 P500.00 R1000.00 T500.00 ;Setup Print/Retract/Travel acceleration
M205 X8.00 Y8.00 Z0.40 E5.00 ;Setup Jerk
M220 S100 ;Reset Feedrate
M221 S100 ;Reset Flowrate

G28 ;Home

G92 E0 ;Reset Extruder
G1 Z2.0 F3000 ;Move Z Axis up
G1 X10.1 Y20 Z0.28 F5000.0 ;Move to start position
G1 X10.1 Y200.0 Z0.28 F1500.0 E15 ;Draw the first line
G1 X10.4 Y200.0 Z0.28 F5000.0 ;Move to side a little
G1 X10.4 Y20 Z0.28 F1500.0 E30 ;Draw the second line
G92 E0 ;Reset Extruder
G1 Z2.0 F3000 ;Move Z Axis up

G91 ;Relative positioning
G1 E-2 F2700 ;Retract a bit
G1 E-2 Z0.2 F2400 ;Retract and raise Z
G1 X5 Y5 F3000 ;Wipe out
G1 Z10 ;Raise Z more
G90 ;Absolute positioning

G28 X0 Y0 ;Present print
M106 S0 ;Turn-off fan
M104 S0 ;Turn-off hotend
M140 S0 ;Turn-off bed

M84 X Y E ;Disable all steppers but Z

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Hopefully I exported that out correctly

pine brook Mar 10, 2023, 10:49 PM

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you dont have a bed level sensor right?

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check if the part that holds your bed didnt get lose over time.

hallow summit Mar 10, 2023, 10:53 PM

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I do not have one. Is that something I can get for an ender 5 this old?

pine brook Mar 10, 2023, 10:56 PM

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yes its an upgrade

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but dont ask me for a recommendation 😄

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if its crealtiy i only want to see it burn 😄

hallow summit Mar 10, 2023, 10:57 PM

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I’ll do some searches, it’s just been confusing because any time I look for anything ender 5 related, it’s just a bunch of stuff for the newer models

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Appreciate your help! Thank you

pine brook Mar 10, 2023, 10:58 PM

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yeah thats creality they poop out minor variations ofs printers everytime

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thats why we have the ender 3 max v2 neo now for example

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and ender 3

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ender 3 v2

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ender 3 pro

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ender 3 s1

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ender 3 s1 pro

hallow summit Mar 10, 2023, 11:07 PM

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I’ve been looking to buy a more current printer and just gave up for a bit because of all of those versions. Need to do some research or look for a different brand, so I don’t make a bad choice. This one just seems to be too outdated, constantly battling issues, and it’s slow

weary crest Mar 10, 2023, 11:07 PM

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You said the only one not working is the one in the middle?

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Can you get the temps of the bed in the middle and the edges?

hallow summit Mar 10, 2023, 11:23 PM

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I had to step away for the evening, but I’ll grab those temps tomorrow and post them

hallow summit Mar 11, 2023, 7:09 PM

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Ok, took the temps around the whole bed and it’s pretty even all around, it’s all pretty close to 70.

But, I’ve been working on some slicer settings, and I couldn’t be happier with how the prints are coming today.

The big thing I did this morning is I decreased fan speed from 100% to 75%. I left bed temp at 70. This worked. Prior to this, a few other prints I tried yesterday were having the same issue as the bed level print, where the corners would curl upwards. I read that cooling too quickly would cause that to happen.

#print not sticking to bed