On Sunday, 20 December 2020 at 20:45:39 UTC, Fredxx wrote:
On 20/12/2020 19:14, Jim Jackson wrote:
On 2020-12-20, Harry Bloomfield Esq wrote:
Brian G formulated on Sunday :
How can that work, though many moons ago a tomorrows world item featured a
spun up flywheel powered dril which i thought at the time a completely
pointless invention.

They cannot have been that effective, because I never came across one.
I began in industry, when Rawdrill bits, holders, stardrills and a lump
hammer was the only way to drill a hole for a fixing. All on the verge
of electric hammer drills being introduced, which reduced the feeling
of Popeye arm muscles from all the hammering.

Warm Grit moment - I remember as a spotty yoof using said lump hammer
and rawldrill and holder drilling into the bl**dy engineering bricks
that our council house was made of. Dad thought it was character
building!!!!
I remember star drills and 'jumpers'. More than once I've made a hole
with a chisel rotating it every hammer blow.

Isn't DIY so easy these days.
Reminds me of those Stanley breast drills after a few holes your ribs really felt it. I am not sure that particular machine was shouldered as the back rest was horizontal rather than vertical as required to fit a shoulder. If it was designed to be pressed by the chest then it would be extremely uncomfortable after a few holes.

It was not too many years back I remember watching a builder using rawldrills to fasten a drainpipe to a wall at a time when battery powered hammer drills were quite common guy must have been a masochist.

Richard