I have just tried the operation you mentioned on a small assembly & I could mate all three planes no problem. Do you have any other mates that might be restricting movement of the assembly? Of course, even if this were the case, it shouldn't cause a crash.
Is the master part has been made in context of assembly or an independent component?
If that is in context of assembly then you might to destroy the in place mate.
The master part is a single component, a sort of main body to which all of the other parts are fixed.
Martin, is that single component was fully created in assembly or was created outside of assembly and inserted into assembly.
If you're still not sure can you attach the assembly file and that part here?
The master component was created out the assembly.
I don't understand your 2nd question.
There are two ways you can create components:
Top Down OR Bottom Up.
Top Down is building components in context of assembly taking references from other components or assembly features/sketches. You don't need to use any mates as SW automatically add in place mate to fix them in the position.
Bottom Up is building all components independent and simply mate them in assembly.
Since yous is a bottom up style, then there would be a different issue. So if you can attach the files here to check. Click on reply, then click on "Use Advanced Editor" to get the options to upload files.
It is a very Bottom Up style, but I edit parts within the assembly to fine tune alignment and fit.
As it happens, I've managed a work-round which has done the trick, I don't know why;
I changed the master part to 'float' then used a secondary part to align the assembly as I wanted. Then I re-assigned the master as 'fixed' and had no trouble at all.
Thanks for the response. It’s a complex assembly, but all
components (including sub-assemblies) are mated directly or indirectly to the
master component. None of the other components are mated to the assembly
As you say, even if there was a conflict, it shouldn’t cause
Solidworks to crash.
My problem is that I need to be able to adjust the orientation
of the master component (is there a better term for the prime assembly part?)
for the purpose of creating an assembly drawing. The current alignment
works for me as the constructor, but doesn’t make any sense for a client
looking at the finished product. I know I could set up auxiliary views,
but I’m trying to make this model accessible to other engineers.
Any help would be appreciated.
If you haven't already tried this, I'd recommend suppressing all mates. Then Float the master part and mate it as desired. If that goes okay, then un-suppress the mates one at a time, starting at the top. If SW still crashes at some point, this may make it easier to figure out why. You may need to delete a specific mate and fix that particular component with a different mate type, or using different entities.