My equipment: Bambu A1, using Bambu Studio, Creality CR-ABS. There is no insulated box (I tried one and well, I need to build a better box in time).
Scenario: I just printed a small (105x67mmx14xx) case for an electronic project. I have had problems in the past with warping, like most people do. I decided to use a raft (7 layers and maybe overkill?) so the ABS would be able to shrink properly, and it did, it was flat with no curves, Victory!. But then it came to removing the raft and that thing would not come off the print. I am lowering the head temperature for layers 2 and upward to 20C (220 to 240) and will test again (looking for a drastic change), but I suspect I will have layer adhesion issues when that happens, maybe, but if the raft comes off easier, I’m going in the right direction. One possible solution was to let the raft cool down before the case starts to print. I also plan to insert a manual pause, but if that does work, I’d like to have that become automatic in the future.
I have searched the internet and I found a lot of interesting topics but I might just be stupid trying to figure this out.
Objective: To allow a raft to cool down before continuing to print.
- If filament is ==ABS, then
- if raft is printed, at the end of the raft, move the nozzle to the wiper, pause 30 seconds
- After pause, continue printing
Something else, I also wanted to add G-code for at the end of every print, to let the nozzle cool down to at least 50C, then move away from the normal parking location about 10mm (or similar). Why you ask? Because the resting location of the head places an undue force on the wiper spring. This results in the spring getting weaker over time and while I know Bambu loves to sell us parts, this should increase the longevity of the wiper as a whole.
Thanks in advance and if I’m missing something on how to find the answers to these kinds of questions, please tell me where I have messed up. I do try to do my own research before asking.
I am not a fan of rafts in Bambu Studio, I liked them in Cura.
The reason, the Bambu ones always have trouble coming off, with Cura it was easy.
The A1 is always going to have trouble with ABS as it is susceptible to any minor change in temperature p, the slightest draft can cause issues.
As it is an open framework printer, you must limit any potential for draughts. This is why warping is a problem.
If you haven’t isolated the printer and left it alone from start to finish, that can greatly help. Checking in the print in person is going to cause temperature and draughts, use a camera, a security camera, the one in the A series is essentially useless.
Once you have the printer stuck in a tiny room and left all doors and windows closed and sealed up any vents, consider a brim with big width.
You can add this in the printer editor.
First of all, Love the user name, made a laugh come out of nowhere.
Second,
I’m not a fan of printing ABS, I bought two rolls (white/black) and figured, I’ll give it a try. I’m to the point now where they are unusable.
I really wish I had a tiny room to place this printer, my computer desk is pretty full. But I have a closet that may work, not too small. I need to run electrical power in there, but an extension cord would work initially.
When printing ABS, I have constructed a 3/4" thick insulated foam box which covers the entire printer, except for the vent holes for the printer electronics. I do not force air through it yet, probably should eventually. So this takes care of the drafts and the box inside temp gets up to almost 44C (not really that hot but better than 23C inside house temperature). But that alone didn’t fix my adhesion to the textured plate. When I used the raft, I first tried 1 layer, well that pulled right off. Then I tried 7 layer Raft and the item was in good shape, almost no warping, but I cannot remove the raft.
I’m printing right now a rather large dog feeding bowl in ABS to see if I (or the dog) likes it and using 2 layers of rafting. Then I can print in PETG if this one works okay. PETG being “food safe”. And I have yet to print in PETG but I have a few rolls that just came in so next week I get to play.
I can give Cura a try but when I had it installed a while ago, I could not get it to work with my printer. I don’t recall the exact issue. I will install it again to see what happens. I did install Orca, but quickly realized it was a fork of Bambu Studio.
I am really trying to “K.I.S.S.” for this 3D printer hobby.