- Joined
- Oct 4, 2016
- Messages
- 7,164
I have a mystery bar from Dave, I thought it might be some kind of stainless steel, I've had it for a couple of months, and zero rust. I have been trying to see if I can turn it, and it has been eating my lunch every try. I tried a magnet, yowza, it stuck tight.
I spent time today messing with it, a file does manage to take off some of a flared end, but with effort though. I was able to get results with Super-MoMax M42 nothing more than .005 made strings depending on the entry angle feed, and speed it would make strings, and, or the strings would burn up. I tried 10*, and 15* samples. Next was Crucible T15 @ 10* (all nose radii were as ground) this would actually turn more than .005, but it was singing. Again this was trying entry angle, feed, and RPM. I have no idea what carbide insert to try, but I stuck an insert I had for cast iron on, not impressive but it did do something. So I have spent a bunch of time learning what not right, looks, and sounds like.
I ran out of time so this is what the perpetrator looks like. RPMs were 650 to 1100 each try.
I spent time today messing with it, a file does manage to take off some of a flared end, but with effort though. I was able to get results with Super-MoMax M42 nothing more than .005 made strings depending on the entry angle feed, and speed it would make strings, and, or the strings would burn up. I tried 10*, and 15* samples. Next was Crucible T15 @ 10* (all nose radii were as ground) this would actually turn more than .005, but it was singing. Again this was trying entry angle, feed, and RPM. I have no idea what carbide insert to try, but I stuck an insert I had for cast iron on, not impressive but it did do something. So I have spent a bunch of time learning what not right, looks, and sounds like. I ran out of time so this is what the perpetrator looks like. RPMs were 650 to 1100 each try.
