Circular vs square

[Geoff_S]

I’m talking about palm sanders here.

Is there any difference/advantage/disadvantage between using a palm sander with a circular disc as opposed to a square cut?

Cheers

 

[novocaine]

even pressure.
that's it really.

 

[Yojevol]

Circular disc sanders will be orbital sanders with the disc held on by hook-and-loop. Square ones will be sheet sanders where the abrasive is held on with a clip arrangement. So with my DW sheet/palm sander I can just cut a length off my stock role, punch a few holes in it for dust extraction and fit it on.
Brian

 

[Oddbod70]

The circular ones are usually random orbit sanders. The base goes round in little circles while at the same time rotating. (If that makes any sense at all!) they give s a smoother finish.

The square ones are (afaik) just orbital sanders and the base move in little circles but doesn't rotate. These can leave swirl marks.