Hi, I am having bed adhesion issues on my BBL A1M. I have tried adding a massive brim, supports, and slowing down print speeds. But I am not sure why it is failing. I have attached pics below.
I am using 0.08mm layer height preset and BBL PLA Basic. I also have a Textured PEI Plate. I am also using a 0.4mm nozzle (Stainless Steel). Washing it with soap is my last option, but I wanted to see if there are any other solutions besides this.
Thanks for assisting!
Thatâs not an adhesion issue, thatâs a orientation issue.
You have no part of the model touching the bed, meaning it is held up only by supports.
Supports are made to break away, see where Iâm going hereâŠ??
Maybe someone else can continue further.
One quick addition to the response form @lion7718.
The A series printers are bed-slingers.
By design, they sling the bed backwards and forwards. The supports will break due to that force.
You could limit the negatives of that movement by rotating 90Âș so the model is turned against the weight being thrown around.
It is not an ideal model to print in one piece.
Perhaps this is a typo? If not try using a regular layer height like .2mm and go from there.
Washing the plate with soap and water is a bit of a must-do on a bed slinger with a print like this. You canât expect this to print with a dirty build plate.
Glue stick & water may help as well (on a clean plate).
Finally, just in case it is the supports that break, increase support wall count. In extremes such as this, you may also need to decrease speed and/or support interface z-spacing. The latter may be avoidable if printing the modell flat, with a dissimar material support interface material at 0mm z-distance.
And of course you could split the model into two halves for easier printing with direct model-build plate contact and glue the halves together.
Yes I understand, but when I rotate where more of the model is touching the plate, Bambu Studio automatically puts sparse infill on top, ruining the aesthetic of the model.
And the layer height is a typo, I did it at 0.08mm (High Quality) preset in Bambu Studio.
Did you try my idea of rotating the model 90° so the wings are running from the back to the front of the printer?
The forces exerted on the model now run along the motion acted against it. It may be enough to allow it to print.
You could also reduce acceleration speeds.
The problem you have now is like this.
Choose Buildplate Only.
@MalcTheOracle I will try it as soon as I have time, thanks for the suggestion.
@lion7718 Please elaborate. I am not sure what you mean by that
Maybe I missed it, butâŠ
Where is it breaking free from, the bed, the support?
What is your bed temp?
Iâd wash wish dish soap and water, paper towels dry. Rotate as Malc says and run bed temp at 65.
In answer to your question to @lion7718
This will limit all support to only those that begin from the build-plate and up.
Otherwise, your support may begin on your model which can reduce the visual quality.
The entire print is breaking free.
The image I have attached is the print breaking free after part of the elevator (rear wing) is printed.
That does not work.
The picture I have attached is a screenshot from Bambu Studio. The red part is labeled as âsparse infillâ. This ruins the visual quality of the wings, and I am not sure how to fix that.
Wrong 90Âș!
I told you to rotate it not lay it flat.
Remember that?
This will create a transverse force against what you originally had.
The idea is to use the increased length of the mass your plane generates to stop it from tipping over. Having one wing at the back and one at the front makes the bed-slinging motion less able to tip over the model as it is like standing with one foot back and the other forward when you aim to catch something big. If your feet were next to each other, you are not braced against that force.
Ohhh. Thanks for the clarification. I will try it in a bit, when I have more time (have to go to school soon).
Sorry I wasnât understanding earlier, I have been 3D designing for a long time, but have only used a actual printer for a little over a month.
Still the wrong 90°.
You need the nose pointing upwards.
Make the tip of one wing face the back of the build-plate and the tip of the other wing face the front.
Make sure the nose points up and the engines point down.
I see. Thank you for your repeated help, I will try in a couple hours.
Increasing âsupport wall loopsâ might also help. Itâll waste more material, but setting it to 1 (from default of 0), will make the tree supports considerably stronger and strong enough to support the model.
[Edit: Ah looks like Malc already said this, but] If you print it standing it, I would also rotate it 90 degrees around Z from your original picture so the movement of the bed is aligned with the width of the aircraft. This so the inertia trying to separate the plane from the bed acts along the longest axis of the supports.
It would help if you could share a link to the model, this way some of us can try to orientate it in the slicer to show you.
