>Doing fine about 1/3 there but when I get my tool right in the predrilled hole nothing seems to happen. I remove material around the hole but not from it's center. Is there a trick to this or something I'm doing wrong?
I sure it's just the wording here and I'm not getting the true picture of what is happening.
When the tool is in the predrilled hole, there would not be any material where the hole is to cut. I would be working the tool from the predrilled hole to the outside or from the outside into the predrilled hole. There are basically only two reasons for the hole. One is to make it easier to remove the material at the center of the cut. The material at the very center of the inside of the vessel tends to form a crown or tit. This is hard to remove as the tool tends to just want to spin around it. The other is for a depth guage.
If this does not answer the question then give a little more detail and we can take it from there.
I think I understand. It's the first time with this hollower and I guess I'm over-thinking the whole thing. I started with the square bit on the straight shaft then switched to the round. After about 1/3 I switched to the curved and teardrop. I hope that's right. Once I have the sides even I plan to return to the straight shaft and bit and repeat the procedure. Figuring exactly how to orient the bits is just going to take some experimentation.
I can now see where this is going and I just got your phone message. I will call you tonight or tomorrow and we can walk through it.
There will no doubt be some other good tips posted here by other turners. I learn a great deal here from the posts. There is a lot of great woodturning experience here on Wood Central.
>Ken, don't know what type of vessel you're hollowing, but if I drill a hole in preperation for hollowing an end grain lidded box, for example, I'll use a tool with a side-cutting edge--pulling it from center towards myself until I get close to the desired wall thickness. My depth of cut is whatever the tool can handle comfortably--so I cut from center outwards straight across towards the outside, then move in a little and do it again, and again, etc. This is my roughing technique for lidded boxes.
Then, if I had the teardrop cutter, that would smooth the inside out to final thickness. I have a flat roundnose scraper for this.