Is there a way to prevent PrudaSlicer from dropping a new stl to the center of the bed?
As part of my design process I like to create multiple parts in my projects and load them in their relative positions into the slicer (for various reasons). Simplify3D uses the origin point of each stl when loading parts but it does not seem that PrusaSlicer has a similar option. So, this post is to verify my understanding.
I do see that for an MMU2S machine type that PrusaSlicer has this ability (question asked on how to load multiple parts), but not for the MMU2S Single machine type, which is what I'm looking for.
Teamwork,
Steve
Best Answer by Robin:
The way it's mostly done for multipart objects for the MMU2 is this: Load one STL (preferably one that stands on the bed surface, and then add all other STLs via right clicking the first part and select "add part->load" this way the parts are not dropped to the bed and not loaded in reference to the center but will be paced within the first objects reference frame. If you use this method for multiple objects you will have to make sure that all objects touch the bed, since they do not "drop" on there own anymore.
Select all the parts together and load them in one go - what happens?
Cheerio,
RE: Is there a way to prevent PrudaSlicer from dropping a new stl to the center of the bed?
The way it's mostly done for multipart objects for the MMU2 is this: Load one STL (preferably one that stands on the bed surface, and then add all other STLs via right clicking the first part and select "add part->load" this way the parts are not dropped to the bed and not loaded in reference to the center but will be paced within the first objects reference frame. If you use this method for multiple objects you will have to make sure that all objects touch the bed, since they do not "drop" on there own anymore.
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RE: Is there a way to prevent PrudaSlicer from dropping a new stl to the center of the bed?
Mulitple parts that are loaded at the same time are placed in the center of the bed, at bed height. Origin point is ignored completely.
Thanks
RE: Is there a way to prevent PrudaSlicer from dropping a new stl to the center of the bed?
Thank you. That does not cover all of my situations, but does help quite a bit in most situations. I've tried it out and it does show all subsequent parts being loaded with their origin points relative to the first object loaded.
So nice to get a quick and concise response.
Teamwork,
Steve
RE: Is there a way to prevent PrudaSlicer from dropping a new stl to the center of the bed?
If you use Fusion360 for designing, you can right click the whole project in the browser-tree and „export as mesh“, then select .3mf (and directly send it to PrusaSlicer). This way all visible objects from the project a send/exported in one go and with all relative positions intact.
Other programs do probably have a similar feature.
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RE: Is there a way to prevent PrudaSlicer from dropping a new stl to the center of the bed?
I use Blender for my modeling, see my profile for the type of modeling I do. Since Simplify3D uses origin points when loading single or multiple objects, I find it very helpful for as a 'partner' program for my modeling process. Seeing potential support areas without needing to slice an object and then slightly rotating the object to examine the affect on supports is a great feature of Simplify3D as well. Simplify3D also highlights any small non-manifold areas of a part that I might have missed in Blender (I prefer to fix my own models rather than use netfabb). I then use PrusaSlicer for my actual slicing, since I currently use a few Prusa printers. So, I only dabble in the PrusaSlicer options when needed. PrusaSlicer is terrific, but those few items from Simplify3D keeps me tied to that program for now.
Your initial response was quite helpful, since there are a few times I want to use adhere to origin points when loading files for final slicing.
Thank you again,
Steve
RE: Is there a way to prevent PrudaSlicer from dropping a new stl to the center of the bed?
You can export multiple objects from Blender too in a similar way (select the ones you want and then use the export to stl with the only selected objects option) and when loaded in the assembly will retain all the relative positions as its a single Object. The Object as a whole will fall to the bed and its center will be placed in the center of the bed as a whole. You can then use Prusa Slicers split to Parts option. Splitting to Parts keeps them all as one object but allows you to reposition individual items if needed or apply different settings to different parts.
The split to Objects option does exactly that, each becomes its own individual object, which means it then has to obey PS objects rules, in effect it means that they all then fall to the bed as at least some part of every Object must touch the bed. An Object made of an assembly of parts only one of them needs to touch the bed to fulfil the rule.
RE: Is there a way to prevent PrudaSlicer from dropping a new stl to the center of the bed?
All is good. I regularly use the different STL output options in Blender, depending on the situation. Again, the key is that S3D has different default object rules than PS (not that one is better than the other, just different). So I have options either way to make my workflow as simple as possible. Now that I understand the PS object rules better (add part vs add object) I can make better use of PS when needed.
What a great team this board has!
Teamwork,
Steve