Hi Psygorn,

> However, I noticed there are fillets it cannot do while 123Design can do! is it because
> of superior fillet engine that 123D uses or is it because of the implementation of ACIS
> in MOI is in it's early stages?

I don't really have enough information to be able to answer this with certainty yet but it's pretty likely that it's something that needs tuning in how MoI converts model data into and out of ACIS.

Can you please send me (email moi@moi3d.com) the model files for these fillet cases that worked in 123Design but not in MoI currently?

- Michael