Either "reciprocal" or "reciprocating" would accurately describe the motion, although it seems like there's another word used for such sanders that I'm unable to bring to mind. I have an old Craftsman 1/3 sheet dual-motion sander that will do either stroke type -- orbital, reciprocating -- at the flip of a switch. (This tool actually died many years ago, after I'd owned it only two years and used it hardly at all. I still have it for some reason, perhaps as a reminder not to buy any more Craftsman power tools.)
BTW I voted for 5" ROS in the poll because I thought the question was intended to be about strictly random-orbit sanders. I also have a B&D 1/4 sheet jitterbug (about 25 years old, from the era when B&D tools were better than they are now), and a recently-bought GMC "mouse" type sander that I've not yet used.
BTW I voted for 5" ROS in the poll because I thought the question was intended to be about strictly random-orbit sanders. I also have a B&D 1/4 sheet jitterbug (about 25 years old, from the era when B&D tools were better than they are now), and a recently-bought GMC "mouse" type sander that I've not yet used.



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