Steve a professional turner for many years was asked to do a demo on hollowing.
He started off by turning what could have been a goblet but became a scoop. turning the blank to round and added a dovetail to the end nearest the tailstock (for safety reasons). then held it in the chuck jaws, proceeded to mark out the lengths of each section. rough form the o/d of the scoop and drill a hole to the required depth before using swept back bowl gouge to hollow out the cup and get a uniform wall thickness.
Tools used by Steve L to R
standard grind spindle gouge, 2 swept back bowl gouges, parting tool, square skew and roughing gouge.
Steve for his 2nd demo chose a 2 part bud vase 6 inches tall in oak, made from a log.
each picture in order has Steve’s method as a caption.
2nd Demo item 
Roughing from log 
Dovetail to both ends 
roughing outside form then parting off top piece 
Finishing part 2 
even experts have catches 
drill to depth as the scoop. 
6mm carbide tool to hollow base part made it easier to under cut . 
creating recess for part 2 
testing fit of top piece 
finishing outside form, 2 pieces together. 
Derry Clifford put a new top on.
Steve was thanked in the usual way for a thoroughly entertaining demo. showing the tools used and their correct and safe presentation to the work piece.
Worcestershire Woodturners 