I’m using Matterhackers ASA to print a fairly large box with a couple of vertical separators inside. The box almost fills the print plate and it’s about 16cm tall.
The print is currently 5 cm tall. I noticed the print is pulling the PEI Textured Plate off the print bed in all 4 corners during printing due, I assume, to the ASA shrinking.
How can I stop this happening? I’m using an X1C.
Thanks
Please search the forum for ASA warping…
You need to use a bunch of tricks, incl hot bed, hot chamber, hot nozzle…
@3dsurfr Thanks… I looked at all all the threads mentioning ASA and warping and couldn’t really find a solution other than… heat the chamber.
My recent print failed with a big crack on diametrically opposite sides of the box, and of course, the base was more round than flat! The print did not come off the PEI plate, it just pulled the PEI plate off the heated bed at the corners.
There are great clamps that hold the printing plate on the heating bed. I’ve already printed it (preferably from PETG, it’s a bit flexible) and found it to be good.
https://www.printables.com/de/model/321213-bambulab-x1-bedclamps-for-big-prints
Unfortunately, for you there aren’t going to be a lot of mitigation tricks.
This occurs when the temp of the middle layers are significantly cooler than the top and bottom layers. As the middle cools, it shrinks and pulls up on the bottom. If the bottom has good adhesion, it will pull the plate off the bed, or start delaminating in the middle (or both in your case).
But one thing you can try first is modify the ASA profile to use less fan. Min of 5% and Max of 10%, maybe 20%. Some people would just turn it off totally and adjust if there are issues. For some reason the generic profile for ASA has 80% max part cooling, which can be an issue.
Thanks. I’ll try turning off/adjusting the fan next time.
Nice! I’ll give those a try too!
Unfortunately, I think Bambu Labs must have redesigned the printing bed as those clamps can lock on to the lip of the bed at the front left corner (short clip) and the front right-side corner (long clip)… but nowhere else. Changing the size of the printed clips made no difference, they just fall off as there is no lip for them to lock on to, except for those two corners. The underside of my printing bed looks quite different from the photos of the clip designer’s printing bed shown in his pictures.
