I have an interesting use case that I tried brute forcing today but to no avail.
I’m trying to print assemblies with the H2d taking advantage of the two hotends to do 2 color prints. As an example I’ve set this plate up to illustrate what I mean:
I have two object groups here, and when set to print By object, the slicer will no longer print with a prime tower. This causes under extrusion on any of the times the hot ends swap resulting in this:
(This however means I can’t load multiple assemblies with different dual color setups on the plate.)
So I’m requesting the ability to set a prime tower up per assembly group as shown in the initial image, or to designate an object in the assembly as a prime tower. I was almost able to brute force this, but the slicer always wants to put the supports down first, defeating the purpose of the blocks I’d added to the assembly as a prime tower. I’m honestly not sure why this isn’t a feature, but I am very much hoping this gets added to later versions of the slicer.
If anyone has a way to get it to do this, or a solution, I’d love to hear it.
Since I can’t embed media or links to the direct page, here’s a copy and paste of the verbiage from a wiki on this:
2. The prime tower only supports a unidirectional increase in Z height, so even if some layers do not switch filaments, the prime tower must be printed to ensure that it is consistent with the model height. It cannot be enabled in by-object printing mode.
That’s probably why this thread is labeled “feature request.”
But thanks for bumping it so I could upvote, FWIW (at GH also!). A prime tower per object [group] seems like a reasonable solution (unless I’m missing something).
I’m new to this, so when I read this as a problem, I went searching through Wiki to help find a reason for the prime tower not to print. My apologies for not realizing the purpose for “feature request”.
Taking this request to it’s logical endpoint, it really just amounts to “one prime tower per object” in print by object mode - because grouping objects kinda defeats the whole purpose of print by object mode.
This kind of prime tower allotment quickly becomes unworkable with both prime towers and parts now having to be given clearance, and it’s fairly clear why Bambu hasn’t done it in the past. At some point keeping all the towers and parts spread apart and the height limitations in print by object results in very poor use of print space.
That said, with the new “No sparse layers” feature, it may be worth taking another look at this request - if prime towers are noe able to be reduced in height, it’s a lot more reasonable in some cases to have multiple prime towers.
You might still be grouping objects because they have similar features and/or colors.
One group is treated as an object so would get it’s own tower, or in case of one material/color no tower.
The C1/INDX solution would be a great possible alternative. But maybe even other solutions.
