3D Print globs and no stick

Snapmaker 2.0
1

Hello all, I am trying to print this dragon from Thingiverse and it starts out fine, then goes to crap. I am using the following settings:
Normal Print
Layer Height - Medium
Speed - Medium
Model Structure - Medium
Support - None
Adhesion Type - Skirt
Nozzle Temp - 205
Bed Temp - 75

I performed the 5x5 Grid Auto leveling with 25 points and the pictures below show what happens. This is a fresh spool of filament that was in an original sealed package, so I don’t think it’s humidity. I have only printed three attempts at printing the Benchy, a Calibration Cube and a modified Battleship Benchy. the 1st 2 Benchies were failures and I corrected the settings and got the remaining three prints to come out fine. I have not cleaned the nozzle out yet, but it seems like the flow is fine.

Any assistance and recommendations would be greatly appreciated.

I am pretty sure this is the one I downloaded:
Articulated Dragon 001 by torua3d - Thingiverse

Thank you,
Ron

start good
start good810×1080 173 KB

glob
glob810×1080 56.8 KB

1

2

Filament moisture is actually MOST often an issue when it is new. You should dry the filament. Also, when is the last time you cleaned the print sheet with soap/water and alcohol? Looks like there are some oil finger prints on it and that will ruin a print real fast too.

3

Thank you, I just bought a small tote, weather stripping and a large moisture absorber to put the filament reels in. I will clean the board and dry out the filaments and try again in a few days.

4

What material are you using? PLA, PETG or something different?

I would suggest cleaning the bed, calibrate the printer and use a temp tower first to identify the right temperature for the given material.

5

The photo is not perfect so I guess you are too far away from the bed.
Try to lower the z-offset while printing the skirt.
image
image

6

I was using PETG. Meanwhile, while the Filaments are soaking in dry air, I went back to the Laser for now… This gives me the opportunity to clean the bed. Thank you for your assistance.

1 Like
7

That’s awesome, thanks for the references and advice!!!

8

I also recommend slowing down for at least the first few layers for this model. After making this model myself it really needs a good first layer

9

how do you slow down for the few 1st layers then change the speed? Using the control unit or Luban? during the print or is that in the G-Code?

10

In luban there is the “more settings” on the right hand side. Go here. In the next menu make sure the “parameter display” on the top of this menu is picked. Down below there is option for slower layers

11

PETG is terrible regarding humidity. I am using a filament dryer and even after two weeks, it still brings out 2-3 grams of humidity while drying for six hours at 55°C

12

When was the last time you leveled the bed and how did you do it? An issue I had that was fixed by manual leveling at the lowest number of points.

13

Hi David. I always do the 25pt manual leveling to get the max leveling. I did it a couple of times before each attempt.

Thank you,
Ron

14

boy have we all seen this before. from my experience

  1. bed leveling like @xchrisd said…i found that adjusting it up or down .05mm till its right can also be helpful.
  2. bed clean. i clean that bed every print, look at it and maybe clean again
  3. finally bed temp…i would be happier in the 85-90 range

from the picture. i would. clean the bed. adjust z down .05mm and heat the bed to 85

15

Clean bed with dish washing soap, then wipe with IPA alcohol. Z offset adjust, personally I would use a 3 wide skirt to tune that. Got 3 Ender machines and my Snapmaker, all of them need a little tweak on the Z offset, 0.05-0.1mm, to get the perfect first layer.

16

I have a J1S and I have had a tremendous amount of support from Snapmaker and still I was ready to throw in the towel, prints like yours and worse,nothing seemed to work. Support suggested I use the smooth side of the build plate and a gluestick and now perfection. I still have troubles but adhesion isnt usually one of them and all the hints given here are valid,I just find it amazing that this hobby/business has done so well considering all the variables stacked against you, Kudos to the experts for sharing their experiences.

17

Awesome, thank you so much for the advice.

18

Sweet, thanks, I will test all the options.

19

I did buy some glue sticks, just haven’t tried them as of yet, I will though. Thank you!!!

20

I had good results ,best of luck ! Now dealing witrh Mike3d silk, it may be me but I swear the filament was twisted while it was put on the spool or is silk just a “problem” feeding to the extruder?