I started to put this in Roger's thread, but put it on it's own since it is more about the Kobra system than a project. I went ahead and included pic's of the major steps in turning it. I have turned a few forms this large free hand and found that it took all I had to hollow out a project that was this large and deep. The Vase is 13 1/2" tall with the inside being hollowed out to just over 12 1/2" deep. It is another piece of maple with very nice grain. Using the Kobra to hollow this vase was very easy and smooth as well as much faster than I'm able to achieve free hand. I'm able to get a fairly smooth cut using the cutter in the Kobra but still used a large free hand bar with a scraper to smooth the inside after I finished hollowing with the Kobra. It only took one light pass to smooth it up with my large home made scraper bar. I'm going to make a scraper head to attach to the Kobra in the future. The boring bar is drilled to accept what looks to be 1/2" dia stock for holding the bits. It will be easy to make a short scraper attachment to mount in it. Again I had zero flex or chatter with the unit even down to 12 1/2" deep. I was hollowing fairly aggressively with the cutter down in the bottom of the vase and dug the bit in one time and stopped my 2 HP lathe in it's tracks. The bar didn't flex or even move. If I had done this free hand I would have felt it under my arm for a week. The system is solid as a rock. This is the size projects I wanted to be able to do with out being beat up doing them free hand and all I can say is WOW this unit makes it so easy. Here are some pic's of todays project. From start to finish it took under 2 hours to finish this project up including cutting the blank out.
Turn Safe Everyone,
Jack
Blank ready to be cut:
Blank cut:
Blank Mounted and ready to be roughed out:
Roughed out to shape:
Kobra used to hollow:
My ugly face with the vase ready to put in a bag for drying:
One of the Kobra hollowing tips:
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