Show messages: All
1-5
6-8
From: ed (EDDYF)
Andy -
Just my $0.02 worth of experience:
I try to avoid fillets on simple shapes because yes, they are difficult to un-do. Instead I'll first try to build the fillet into the construction curves.
In the case of the capped, shelled cylinder, you can draw a 2D profile curve, apply the 2D fillet, and Rail Revolve into a cylinder having a thick wall. The advantage is you can simply move a couple of points and re-do the Revolve to get a new fillet dimension.
I also tend to save making fillets to the very end of the model creation so I don't paint myself into a corner.
Another thing I do on more complex projects is take a copy of the objects when they are in a less developed condition and paste them off to one side (or into another instance of MoI) as backup to an earlier revision.
Ed Ferguson
From: Andy (ANDYA)
Thanks Ed - good suggestions. Andy
From: Michael Gibson
Hi Andy,
re:
> OK, so your reasoning is that because it is complicated it won't happen in MoI?
No it's simply an explanation for why it has not happened _yet_ in MoI.
> Alibre Design has no problem with it - see screenshot. <...>
Yes Alibre Design uses a geometry library called ACIS which has had something like 50 more man-years of effort put in to developing the shell and fillet geometry processing than the library that MoI uses.
I would recommend using Alibre to do your shelling instead of MoI, that way you won't have to worry about the ordering.
Shelling in MoI is pretty primtiive. When I started MoI I had hoped that the shell and fillet functions in the geometry library that I used would improve over time but the authors of the library have gone in a different direction than that.
I would like to license a different library to better handle those areas. That requires a lot of work as well though even just to investigate it.
> it becomes more important IMO for the application to do what the user expects
I totally agree! Unfortunately it will require a lot of work to make this area behave like the user expects. I have not managed to scrounge up an extra 50 years of work time to make it happen as of yet.
- Michael
Show messages: All
1-5
6-8
