I download an assembly with parts but there is no mate relations. Shouldn't the drawer add this? How can I solve this? thanks.
If you downloaded solidworks assembly, either the creator might not have assigned the mates or he didn't know that something called "mates" exist in solidworks. :P
if you downloaded step/iges files you are not going to have any mates when you open it in solidworks. In any case you need to assign mates manually.
thats so sad. I wish there is another solution. some drawings might be so complex. thanks anyway. in addition I hope there is no one here who is dont know "mates" hehehe :P