On 10/11/2018 23:10, John Rumm wrote:
8

http://wiki.diyfaq.org.uk/index.php/Inline_Sanding_Hack


Scary.
You might suggest grinding the teeth off or some fool will have their
hand off.


For the OP I can't see what's wrong with a normal random orbital sander
and putting a metal rule along the beam to stop it doing any damage.
Maybe cutting a strip of metal/plastic and wrapping it around the pad.