Thank you - I'm curious to know your likes/dislikes for these tools? I'm really leaning towards them.
Maggie, I own both and mainly turn hollow vessels, some fairly deep around 400mm. The Rolly Munro works really well within its limits, ie He recommends .25mm cut and generally a bit lower on the speed than you would normally think. How slow? Well, much depends on the species you are turning, and I turn mainly Australian hardwood. So for me its under 1000rpm and often down at 5-600. I use it as a finishing tool and or small pieces like my avatar, this piece was around 100x100 or 4x4" in Solomon Island Queen Ebony. I find for small pieces its ideal as it has a small head compared to the Pro-Forme. The shaft at 16mm matches the head well and the handle is comfortable and long.
The Woodcut Pro-Forme, I bought only the Head and build my own shaft and handle. This is the cheapest option, in fact I have two Pro-Forme heads. The learning curve might be a bit steep for some in finding and keeping the sweet spot. But once you're there, its very easy. It can be opened up 1.5mm on green wood and its one of the fastest hollowingtools for bulk removal that I know of. But it has a tendency to self feed especially of green wood with a wide open cut, this is easily countered by rolling the tool counter clock wise on to the shield, you dont need much roll and its very easy to control. On long slender vases its quite effective closed down and using slow pulling cut out of the vase. The Pro-Form is capable of good finishing cuts when you close it down.
Both Hollowers for me are fiddly to adjust, so thats why I have multiple. The Wunderkutt 10 is set on his recommended .25mm and I dont change, surprisingly it still hollows quickly and effectively. The Pro-Forme I do adjust some, generally from side cutting to end cutting, end cutting for me is often end grain hollowing in hardwood. I dont like it too aggressive in deep vases or hollow forms.
The only other thing I can think of is lathe height, as I exclusively turn hollow forms. I have found the height of the lathe can help a lot if you raise it up, so the centre line is comparable to your arm pit,. OK this is way higher than anybody will suggest. But at this height the tool handle fits comfortably in the arm pit and is very secure and allows two hands for turning and of course you move the body rather than your hands. This suit hollowing tools but not really gouge hollowing, I gave up hollowing with a gouge several years a go for hollowers and now I probably have 6-8 hollowers, along with a scraper system I have developed for the deep pieces. The pierced pieces I sand the full length internally