Begonia Cuttings How ?

From another thread we ( @"M" ) were wondering on the best method to take cuttings from corm type begonias as below ?

TIA

 

I would take cuttings now from non flowering shoots.
Did this once and plants took 2 years to form tubers though.
Basal cuttings in mid spring too

 

I used to divide the tubers in spring, if you get two or more shoots, then dust with sulphur the cut surface of the corm.
I was never that successful with basal cuttings, as @Verdun says, this late you are unlikely to get much of a tuber to overwinter, so you will need to keep the cutting in the green.

 

Thanks @pete , @Verdun
Two years for tubers to form and tricky basal cuttings.... this sounds a little tricky for me. Also it appears I am to late this season . I may have a go next spring