How do I align Parts?  

RE: How do I align Parts?

Simple answer is not easily.  You can centre a part on the build plater.  You can then centre another part of the build plater.  That then makes the parts aligned centre wise. in X/Y

You can also do the same using the right hand coordinates fields at some other arbitrary location.  That is only really practical though if you want the centre of one object or parts bounding box aligned with the centre of another object or parts bounding box.  If you wanted to align say a part with the side of an object then you are out of luck.  I suppose you would work out the dimensions and do match etc.

There are no alignment tools.  Again this is something better off done in CAD at the moment and then once aligned exported to PS.  

There are many such requests for such tools on the prusa slicer github.  for example
https://github.com/prusa3d/PrusaSlicer/issues/13073
https://github.com/prusa3d/PrusaSlicer/issues/13402 - in which theres a list of 8 other duplicate requests 

RE: How do I align Parts?

Thank you SO MUCH!

Google says you can, but Google also claims to know that the Moon Landings were faked 🙁

So having an expert say "Don't bother looking." is a godsend.

My son did this for me by exporting the 2 pieces as 2 separate .STLs, and when I imported them both at the same time, I choose YES to the question "Single Object having multiple Parts", which worked.  

Thanks to you, I know that there is not really 'any other way', so I won't spend (hours) of frustration looking for it!

THANK YOU.

Henry

RE: How do I align Parts?

Hi again.

I found your explanation of "Objects" vs "Parts"  EXTREMELY helpful.

And I took the time to edit it a bit, and add explanations that a 'dummy' like me finds helpful.

I don't frequent the forums much (I'm a 67 yo retiree whose Mech Eng son got me into this!), but if you ever have reason to help others as you have helped me, may I offer this slightly modified explanation of yours.

TY

Difference between Objects and Parts?

Ok here’s a basic run down.

Each OBJECT is the root of a branch in the right hand window pane.   

Within each OBJECT can be multiple Parts.

OBJECTs are the Assembly, and Parts are the components

Parts appear as branches of its parent OBJECT in the right hand pane

(This is like folders in Explorer; but unlike Explorer there are only these 2 levels in the Slicer). 

Each OBJECT is sliced and processed individually. 

+Do not attempt to overlap  OBJECTs, or bad things happen.  

+ OBJECTs must be placed on the print bed. 

   So trying to lift an OBJECT above the print bed is not allowed, it will just drop to the bed. 

   But as long as some piece of the OBJECT is on the bed (or raft if enabled) then its ok.

You can select Parts only by clicking on them in the tree view, not the Plater view. 

   If you try and grab it in the Plater view, it will just grab the whole parent OBJECT. 

Unlike OBJECTs,  Parts can be moved around and can be floated above the bed. 

(think of it as if the ‘Part’ is resting on the ‘OBJECT, and the OBJECT is resting on the print bed)

Also overlapping Parts are sliced properly and clip each other.

SPLITTING:

Splitting into OBJECT basically is destructive: It turns all pieces into root-level OBJECTs,

(like if you had the number ‘8’ as a cutout, it would create each circle in the ‘8’ as a new OBJECT.)

And as an OBJECT, all the individual pieces will all fall to the bed, since they are now a bunch of disassociated models. 

Unless there is some overriding reason to split to objects then it’s best not to. 

RE: How do I align Parts?

>> You can centre a part on the build plater.  You can then centre another part of the build plater.  That then makes the parts aligned centre wise. in X/Y

How? I couldn't find any  'Center' option, unless you mean doing a Manual Calculation of X/Y location on the lower right Pane.

TY

Henry