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Ender 3 Pro continual issues after initial successful prints - Updated

opalko

Hi folks, I have an Ender 3 Pro that I bought about a month ago. Stock machine. I have successfully printed using PLA and PETG filament initially.  I am using stock settings for PLA and PETG in Cura on a Linux machine for slicing.

The last thing I printed was a case, in PLA, for a transistor tester, one of those cheapee ones that work well. The outside of the case printed fine but the screw holders on the inside were a loose nest of filament that had no cohesion. They would just snap off with the touch of the finger. It would never hold screws.  So I tried printing the lower half again. This time the bottom layer did not even go down well. Tried again. This time even worse!

Ok after consulting different forums, I was first told my extrusion temp was too low - stock Cura setting is 200. I bumped it 210. Nope. Then I was told to clean the extruder nozzle, which I did. Nope. Then I was told to check the z step. So I went through the process of calculating that and adjusted it. No difference.

At this point I started over. I

- leveled bed again (still didn't work)

- cleaned nozzle again (still didn't work)

- tried different extraction settings (on/off, speed etc) (still didn't work)

Today I went back to the default settings and tried printing it one more time (and then a second and third attempt..). Now the skirt won't even lay down properly. Any guidance for what is going on or where to start (again) with this? I keep the PLA and PETG in the foil pouches they came in with dessicant but I don't have a dryer or use the oven before printing.

Here is a link to the photo album of first good prints and then the degradation over time to the last picture which is from today of the bottom of the tester case I am trying to print again.

https://photos.app.goo.gl/PmBKJQojMPebxnpJ8

Thanks

Robert Opalko

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  • in reply to MikeC

    I left that info off the original post so thanks for the reminder.

    No glass; magnetic sheet and I have always cleaned it after each print with soap and water and a wipe with isopropyl alcohol.

  • in reply to opalko

    I never can get PLA to stick without something on the bed like glue stick or hair spray, and a temp of less than 65c. If you end up getting some warpage in your first few layers, you might think to raise the temp, but I would say lower it. I've found when my first few layers lift and warp, it's because the layers just above are cooling and contracting faster and that pulls the lower layers off the bed. A lower bed temp can lessen that.