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Post by Joe Norman on Feb 3, 2021 2:31:46 GMT
Can you grind a irish grind 55 degree using the pro eg if so how do you set it?
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Post by Joe Norman on Feb 3, 2021 3:07:39 GMT
Can you grind a irish grind 55 degree using the pro eg if so how do you set it? |
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Post by Pete on Feb 3, 2021 11:14:13 GMT
If you use the 3 hole long grind optional swivel block each hole adds 5° to the proset setting. SO use 45° setting on the ProSet, then use the 3rd hole on the swivel block and you have 55° this is how I set most of my bowl gouges, though I also have some at 40/40 and one at 60° traditional grind.
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Post by jhnorman on Feb 3, 2021 11:30:46 GMT
How do you how far to grind the wings?
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Post by Pete on Feb 3, 2021 11:39:12 GMT
Start with a guess then adjust until it suits you, mine are not overly long as I find with my height method of cutting etc. I tend to prefer a shorter steeper wing to what is often shown as the Irish Grind I recommend when working on a new profile you only do one tool and make it an older one, shape it to a drawing / picture of what you are after then cut with it a while and tweek it until it works for you before copying it onto other sizes of the tool.
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Post by jhnorman on Feb 3, 2021 11:44:33 GMT
Start with a guess then adjust until it suits you, mine are not overly long as I find with my height method of cutting etc. I tend to prefer a shorter steeper wing to what is often shown as the Irish Grind I recommend when working on a new profile you only do one tool and make it an older one, shape it to a drawing / picture of what you are after then cut with it a while and tweek it until it works for you before copying it onto other sizes of the tool. |
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Post by jhnorman on Feb 3, 2021 11:46:18 GMT
Thanks Pete I finally understand "my eyes are open". Big help!
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Post by francis on Feb 3, 2021 12:22:07 GMT
I've posted this before - but take a look on the three hole jib I have labeled A as the front hole and C as the back one it took a bit of time to work all mine out I did not follow what Peter did - the "Deg" column is what I set using the Pro-set and the Actual angle is what I measured using a protractor after sharpening the "roll on back" angle is for when I have the gouge flute down on the table to do the initial paring back of the nose of the tool - not used after that the flute shape is more for info - if you read the "pete childs" book =- www.peterchild.co.uk/grind/newgrind.html he talks about the importance of the shape of the flute being super important In my case I have a Hamlett (number 4 in my list) and a Record (number 1 in my list) - and the cut completely differently - number 4 is a joy to cut with as it has a "P"arabolic flute where as the record has a "V" shaped one the rest of how to operate a gouge seems to be down the the pair of hands holding it and nothing to do with its shape or sharpness !!!! Look at twitter.com/TheWoodturners where you will see Steve using a common garden Shovel as a skew !!! Attachments:Jig Settings.xlsx (171.61 KB)
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Post by Pete on Feb 3, 2021 14:40:39 GMT
Have to totally agree on the flute shape, and on the pair of hands holding it, most of my bowl gouges are parabolic which I can pretty much sharpen and use with my eyes closed these days (I don't but you know what I mean!) I have one old V shaped flute which no matter what I do on sharpening I just can't get along with it, but I know other turners use them all the time and cut just as well as I can.
Operator to lathe height makes more difference than a few ° angle on the sharpening angle on approach to a cut, being quite tall I have my lathe on risers, but still 2" below my optimum height, my logic for this is if I am on a training course I can adapt to a lathe 2" lower than mine quicker than I can adapt to one 4" lower, though this year of not using anyone else's lathe is making me question if I should raise mine save my back and be done with it!
Interesting that you use a 35° angle on your parting tool, mine was also set to 35° and a question came up on here about what the factory grind was, I had to call in Clive to find out that new ones come at 25°, mine got set to 35 when I was doing lace bobbins with another turner and I just got used to it then completely forgot that it wasn't standard!
Two bits of advice I take to heart:-
1 Once you have bought it it is your gouge, so put your grind on it
2 Lots of uses for a worn out tool the principle one is "play with all the daft ideas fed in by the internet, one of them may be as daft as you!"
My next daft idea to try is swept back wing on left traditional on the right as used by Emma Cook, logic says it is to save carrying 2 tools when travelling to demo, but it just may work as the "tool in your hand"
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Post by ricksp65 on Mar 14, 2021 19:11:28 GMT
I’d like to try the Irish grind also let me know how you do with it.
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Post by jhnorman on Mar 21, 2021 16:52:36 GMT
It was a long process to grind it. Like Pete said find a old tool to practice on. Must have grinded and inch off my new bowl gouge until I got it right. Then just a lot of practice with it. Getting better but still a long ways to go.
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Post by Pete on Mar 21, 2021 22:21:23 GMT
Good to hear you got it cracked Joe, Actual angles being unimportant may be a strange view point for a ProEdge user, but bottom line is the wood doesn't care as long as it has a sharp edge, it is all down to the user and the beauty of the ProEdge is once you have found it you can repeat it.
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