Hi all,
I was recently given (well, I asked for it) a scrapped lamp of the type usually mounted on 'chairs' for dental works.
I drilled a 5mm pilot hole through the top plate and the rectangular tubing of the frame, then cut the 35mm hole using the drill and saw mill shown in the picture, and finally
enlarged the hole at the bottom of the frame to 8.5mm, for the 8mm drawbar: the idea was having the hole centers laying on the same line, as square to the desktop as it could
get.
Next, I turned a bushing to adapt the lamp to the square column itself (they were not parts of the same set, : ) out of a piece of scrap teflon [the lathe bits normally used
for brass and bronze (no top rake) worked OK] and put some tapped holes on the column itself (one will accept an hook to hang the dremel, the second I do not know yet) plus
the tapped holed for the switch and a 16mm hole on the back of the column for the cable.
I agree the carboard box sitting on the desktop as shown in the picture is not the best item I could find to hold the transformer, it will be replaced (VERY) soon with a more
proper container, bolted to the wall as high as the cables will allow, with ventilation holes drilled in the directions chips and debris are less likely to come from.
Marcello