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| DaveH:
Nick, Nice job, well done :thumbup: :clap: :beer: DaveH |
| MadNick:
As Rod The Mod once sang 'the first cut is the deepest' - well it certainly was in this case! I took a bit too much off on the first attempt, you can just see on this photo where the centre of the end mill has been ground. A quick test cut and it was quite clear from the pattern that a lot of rubbing was happening. But, its certainly a good start and I never expected it to get it right first time, so, progress...of a kind! Nick |
| philf:
Nick, Good progress. If you're seeing rubbing - don't forget that the end cutting faces shouldn't be at right angles to the shank of the cutter - they should angle inwards slightly - about 1 degree from memory but I'm sure someone will know. Cheers. Phil. |
| Fergus OMore:
Agreed Phil but the Kennet is a pretty basic beast and 'dishing' the 1-2 degrees is not quite so straightforward as on our Quorns. My own experience using my Kennet suggests leaving such matters until more overall experience is gained. Nick has yet to grind a lathe tool and I have been trying to keep things simple- for the present. We've already been 'cutting corners'( pun intended) by him using a 6" DE grinder rather than the correcting a high speed spindle that isn't quite 'comme il faut' on a somewhat well worn lathe. In all, he's done remarkable things - broken tool holders, missing bits and only an old fart('nuff said') |
| MadNick:
Thanks Phil, I had read up on the required angles from the Workshop Series and thus set a 1 degree concave angle into the end mill so im confident that my angles are good. One of the faces did have a lump taken out of it and as I progressively sharpened each face in turn, this was the one that needed a bit more taken off than the rest so the end mill really was near the end of its usable life. --- Quote from: Fergus OMore on April 24, 2012, 12:53:12 PM ---In all, he's done remarkable things - broken tool holders, missing bits and only an old fart('nuff said') --- End quote --- Thats only through plenty of your patient, expert advice and my own dogged determination :) Theres a looong way to go yet but at least its usable. Nick |
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