I read with interest Steve Schlumof's post and the following comments about his mis-adventures with the McNaughton coring system. Based on other similar experiences and comments when I was researching coring systems I chose the Oneway system. I figured, for me, the shorter learning curve was a fair trade for a bit less variation in the shape. Besides, I like the hemispherical shape on my bowls. It was a shape I often try to achieve, anyway.
I finally scored some green sycamore large enough to merit coring and tried the system out yesterday. I can honestly say the learning curve with the Oneway Easy Core was virtually zero, for me. Success on the first try; one big blank led to five rough bowls.
I watched the DVD Oneway supplies 3 or 4 times and the only real problems I had were mounting that heavy rough blank on the headstock and I couldn't figure how to turn a tendon on the blank so I turned a tenon instead, but it worked OK. One bit of advice I can offer is to stay away from Al faceplate's when trying to mount very heavy clumsy bowl blanks. The threads are just to soft to stand the gyrations required to get the thing screwed onto the headstock. I ordered a 6" cast iron faceplate this morning.
All in all a very satisfying experience. Now for the drying.
George