All I did was load a new roll of PETG-HF and it seems since then I can’t get anything to stick to any print bed, It looks like the extruder is scraping off already printed parts, and it appears to be coated in PET-G, I took it off and cleaned it up as best as I could but on the first print it is covered again, I have tried PLA with similar results with nothing wanting to stay on the bed, I have cleaned all the beds with washing up liquid multiple times, tried with glue and without but nothing seems to want to stay on the bed.
You need to dry it.
I have 2 rolls that I was experimenting with due to another thread. You have to give it a good dry, at least 8 hours.
I know it’s frustrating but Bambu lists that it needs to be dried before using, and now and then depending on the storage method when not in use.
I wanted to see the difference (since there was a complaint) between dried and just opened. Neither the grey or the orange would stick. I then dried orange for 4 hours and did not stick. The purge would but really nothing else. At 6 I tried the grey with a little better result, but not sticking. I tried at 2 hour intervals until bedtime and around 8 (with a Sunlu S4) things started to improve.
Next day all was well and printed nicely on both spools.
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it was in my Sunlu dryer for the stock 6 hrs, but it does only go up to 55C so maybe longer, the first roll through had no issues. Ive ended up having to print a raft! havn’t done that for many years, I am printing a PC case and the first layer is not good for printing, it starts with the front which is mainly holes with thin edges.
I’m printing a small part in the orange now that stuck well. Once it’s done I have a large print I’ll try near the edge of the plate and let you know.
After a lengthy dry (was at 55 btw) it seems to print like pla
which print bed are you using? It was printing well on the engineering plate with glue up until yesterday
I think I have the textured in at the moment. You may have better luck with the textured or the smooth PEI
I have been experimenting with the new PETG-HF and I tried printing one of my fidget spinners, the latest model Gyro4 CrissCross.
I had excellent results.
I haven’t been a big user of PETG, so, I was unsure how it would go. I also tried the PETG Translucent for the first time.
You can see the results in the photos.
https://makerworld.com/models/591254
The one with three colours uses three different PEG-HF straight out of their bags with no pre-drying. I figured I would do a before and after, it turns out the before was perfect. The spin on the Fidget Spinner was excellent.
It is a complicated design with very tight tolerances and a combination style with both gyros and a free-spinning centre. Essentially a torture test.
It worked the same, if not better, than the P,A versions.
I did exactly the same for the PETG Translucent with identical results. That is the two colour version. The exact filaments used are shown in the description at the bottom.
My ambient humidity is around 60%+, my AMS humidity was around 40% at the time (I have now cycled the silica out with fresh and it is back to 11%).
I do not know if I will get away with pre-drying it next time. I do zip lock bag every spool when not in use and place back in a box and then in a cupboard.
Built-plate: stock textured PEI that shipped with the P1S.
I never use glue with any filaments.