Timeline for Why does the first layer only adhere to bed if I increase the temperature by 10 °C and drop the speed by 75 %
Current License: CC BY-SA 4.0
11 events
| when toggle format | what | by | license | comment | |
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| Jan 22, 2022 at 18:03 | vote | accept | Aaargh Zombies | ||
| Jan 19, 2022 at 21:27 | comment | added | Criggie | @AaarghZombies in my experience, the paper method leaves too much gap. The only reason for using it is to make the bed roughly equal at all corners. Then when I print next time, I watch the brim go down and adjust on the fly while the print head moves around. I might be able to do some video of this process if that helps ? | |
| Jan 19, 2022 at 21:17 | comment | added | Aaargh Zombies | I used a sheet of A4 printer paper to do the levelling. I'm pretty sure that I've got a feeler gauge set stashed somewhere, what is the correct height? | |
| Jan 18, 2022 at 21:39 | comment | added | Criggie | @AaarghZombies If I measure a priming line scraped off the bed, it is 15 thousandths of an inch thick and 51 thousandths of an inch wide. That is 0.4mm thick and 1.3mm wide, and shows empirically the amount of squash your first layer should have. The strands should not be round. (sorry for SAE, my small micrometer is vintage and therefore imperial) | |
| Jan 18, 2022 at 20:23 | history | edited | Criggie | CC BY-SA 4.0 |
Add image of better brim
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| Jan 18, 2022 at 15:52 | comment | added | R.. GitHub STOP HELPING ICE | @AaarghZombies: Looking at your photo, the brim and skirt did not go down perfectly. The adjacent extrusion lines are not touching each other and barely touching the bed. Your bed is way too low. It needs to be raised by at least 0.15 mm, perhaps more. The only reason those lines stayed in place at all is that there are no sharp turns in the toolhead path and the molten material had some time to cool before forces started pulling in a different direction. | |
| Jan 18, 2022 at 13:18 | comment | added | Aaargh Zombies | I've adjusted the height 3 times, no change. I don't understand why the brims and skirts go down perfectly but not the first layer of the model | |
| Jan 18, 2022 at 11:40 | comment | added | Criggie | @AaarghZombies Based on your photo, the first layer is going down as separate strands, where it should be mushed to a strip. Try raising the print bed a very little amount and see if it improves, then iterate. | |
| Jan 18, 2022 at 11:36 | comment | added | Aaargh Zombies | The bed was the first thing that I checked, it's absolutely level and at the correct height, I pre heated it and did it 3 times and did calibration prints that came out perfectly 3 times. The brim and skirt also came out perfectly, in fact everything that was automatically generated has been perfect. It's only the bottom layer of the model which isn't sticking unless I go outside of the manufacturer recommended settings. | |
| Jan 17, 2022 at 23:53 | comment | added | agarza | Who said ASCII art is dead? Nicely done! +1 just for the art. | |
| Jan 17, 2022 at 22:52 | history | answered | Criggie | CC BY-SA 4.0 |