I ordered the Oneway coring system. The package was stuck at the customs office in Chicago for over a month. Finally got it a few days ago. I have been using the McNaughton system for over 20 years. I was always curious about the Oneway. I also ordered the new Korpro cartridges with a carbide tip from Hunter tools. I had 3 large curly Koa bowls ready to core. I used the Vicmarc VM150 on all 3, with 6 in jaws. I started with the standard cutting tips from Oneway. I assumed there were sharp, from the factory, they looked shiny enough. Well, I guess they do not sharpen them, or not enough, or not as good as what I can do. I was disappointed, to say the least with how it was cutting, or scraping, as Robo told me. I then sharpened it, and that made a big difference. Switched to the Korpro. What a difference! Huge shavings flying out. I only core nice pieces of Koa, or that special curly mango. The Koa that I cored if you were to buy it goes for $150 per BF. The blank is well over $500. The money bowl, when finished is a $1500 bowl. I got one $600 bowl and one $300 out of it. In just 2 hours of work, I made enough cores to pay for the system and the cartridges. I got the complete 4 blades system. It wasn't any faster than the McNaugton, but, it was definitely less strenous to use. The third bowl was a bit too shallow, so I had to core with the McNaughton. That is one limitation of the Oneway, the depth. I figured it out what shape bowl the Oneway likes. Next I'm going to make a extra large Milo natural edge bowl and I will try to take out as many as I can, hoping for a minimum of 4, maybe 5 for the nested set. I'm a beginer Oneway user, any tips that you have are greatly appreciated.