Just got a new orbital sander (Bosch GET75-6N) with pad holes as shown in photo A. The sanding disc that came with it is shown in photo B. I didn't bother putting that disc on, but actually lining up the small holes seems way too much to ask. Probably some of them would line up by happenstance. Is this the way it's supposed to be? I'm used to my 5 incher, with exactly 5 big holes that line up with the 5 holes on a disc.
I'm going to use mesh discs, so I got a Mirka protection pad, shown in photo C. Photo D shows it on the sander, and the large holes do indeed line up. But whether any small holes line is, again, a matter of luck. Does this seem right?
I'm not worried about the mesh sanding discs themselves, because they're mesh.
I find the awkward combination of the sander itself (sans protection pad) and the sanding disc that came with it very curious. What am I supposed to do if I decide to use conventional sanding discs instead of mesh?