- Joined
- Nov 2, 2010
- Messages
- 45
START FACE FROM THE CENTER OUTWARDS.
Use a colbalt tool bits.
Robbie
Robbie's Machine Service
Use a colbalt tool bits.
Robbie
Robbie's Machine Service
Please don't shout it's not nice or friendly.
The use of capitals is considered shouting - Just saying
DaveH
I've never had much luck starting in the center. That is, unless there is a center hole, or it is tubing or some such. For flat plate, the zero surface speed at the center, and the inserted tools I use just doesn't seem to work out. I believe you though, with HSS, and a sharp point, you can plunge in and do OK. Seems it will still leave a nib though. Or chip the point as you cross center.
Just try not to run them to fast or get them to hot or they will go blunt quick. A HSS tool bit sharpened right should last around an hour before needing touching up, it just depends on the job and the cuts.
You will also find you get a better finish and the tool will last longer if you hone the tool with a oil stone after grinding.
Another thing to consider is the HSS quality. If you are using Chinese ones they don't last as long as good quality and if you can get them with cobalt, even better.
Dave