Ian Stirling wrote:

If "Roll for 30 secs" was real, you'd see the mechanism in at least some
powered concrete mixers.
Properly incorporating all the stuff with a minimum of water takes a fair
bit of energy.

I always wondered why no-one made a =A315 powered cement mixer,
consisting of a tilted big plastic bucket with 2 wood strips glued down
the inside, supported on a bearing, driven by a belt from your drill.
Just stick drill in, slip belt on, run for 5-10 mins to get a good mix.
Small batches ideal for pointing etc, low price ideal for the
oddjobber.


NT