robo
Junior Member
Posts: 70
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Post by robo on Apr 7, 2008 15:21:36 GMT
I am slowly reading my way through a 1954 edition of Planecraft by C W Hampton & E Clifford which I have seen highly recommended on the web a few times. I have just read the section on Whetting using oilstones - Washita or India followed by an Arkansas stone and then a strop. One thing it does say is "do not let the iron rock as this will inevitably result in a curved edge that cannot cut very well and will necessitate re-grinding straight away" - I suppose in fairness Jacob was talking about chisels when extolling his sharpening method? For stropping - "you will require a piece of leather (preferably Buff, but Kip will serve if you use the smooth side) Dress it with a little tallow (Russian, not town) and a little of the finest flour emery". Apart from tallow where have all those delicious items gone?  And Record invented the "Stay-Set!" Cap Iron (which Clifton use?) which, with 6 other advantages over the conventional cap is "guaranteed chatter proof" R |
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Post by paulchapman on Apr 7, 2008 15:39:20 GMT
And Record invented the "Stay-Set!" Cap Iron (which Clifton use?) Yes, the Clifton two piece cap iron and the old Record stay-set are the same. They are the best cap irons available in my view - they give the blade a lot of extra rigidity. Cheers  Paul |
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Post by mrgrimsdale on Apr 7, 2008 19:42:12 GMT
I am slowly reading my way through a 1954 edition of Planecraft by C W Hampton & E Clifford which I have seen highly recommended on the web a few times. I have just read the section on Whetting using oilstones - Washita or India followed by an Arkansas stone and then a strop. One thing it does say is "do not let the iron rock as this will inevitably result in a curved edge that cannot cut very well and will necessitate re-grinding straight away" - I suppose in fairness Jacob was talking about chisels when extolling his sharpening method? snip R Plane irons too  The anti round-bevel thing is just another one of the many odd woodworking myths. You can rock the blade as long as you dip it so as to keep the cutting edge at 30 deg or whatever you want. It makes absolutely no difference to the cutting edge if you have 2 bevels, hollow ground, or rounded, as long as the edge itself is OK. Freehand with rounded bevel is just quick and easy compared to other methods - and you never need to re-grind. What you mustn't do is round it by raising it as this will increase the angle at the edge. cheers Jacob |
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Post by jfc on Apr 8, 2008 7:34:51 GMT
The good thing about flat bevels is on an oilstone when you are at your angle the oil sqeezes out . This lets you know your at your angle .
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Post by wrongnail on Apr 15, 2008 22:12:05 GMT
Dress it with a little tallow (Russian, not town) and a little of the finest flour emery Apart from tallow where have all those delicious items gone? R Flour Emery? I have a half-pound jam-jar full, next to a half pound of jewellers' rouge, on the top shelf in my glory hole. They are both probably set rock hard now. But put them through a pestle and mortar and a day or two settling out in water and they'll be fine. Thanks Robo. I had forgotten about them! ;D John |
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Post by wrongnail on Apr 16, 2008 7:23:13 GMT
[/quote]Plane irons too The anti round-bevel thing is just another one of the many odd woodworking myths. You can rock the blade as long as you dip it so as to keep the cutting edge at 30 deg or whatever you want. cheers Jacob[/quote] Hi Jacob, How can a 'rounded bevel' be constant at any particular angle? A rounded bevel has a radius and the 'angle' or tangents are continually changing as you go around the 'curve'. (Dictionary says: A bevel is a plane surface formed by two surfaces meeting at any angle that is not 90 degrees.) I was taught by your 'myth' method and that's what I stay with. My tools work fine and I could shave with any of my plane irons, if I so wished. I appreciate that an edge tool, with a rounded bevel can be sharp enough to work with, but surely a plane iron, honed with a rounded bevel would tend to 'skate' when used bevel down. I would be interested in your more detailed observations, to see if I can get my head round it, before I go and try it with an old iron. Cheers John  |
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Post by mrgrimsdale on Apr 16, 2008 18:44:07 GMT
It's much simpler than you think! Here's a photo. OK its a chisel but the details would apply just the same to a plane iron. It shows a chisel with a 30 deg edge AND a rounded or convex bevel. No problemo ;D If the bevel was flat, concave, ribbed, flavoured, finely engraved with erotic carvings, or anything else (within reason :  ; as long as it lies below the 30 deg tangent it has absolutely nil effect on the cutting edge. And if a plane iron - as long as it is held in a plane at an angle above 30 deg, then the bevel (whatever shape it is) is away above the workpiece surface.  cheers Jacob PS the whole of the Crazy Sharpening Industry hangs on the failure to understand some very simple things PPS just spotted this. What a f***ing stupid gizmo ;D ;D ;D ;D Mind you it's "made of high-impact Lexan" which is very good news, Lexan being my favourite material after MDF I see the future, and it's LEXAN |
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Post by mrgrimsdale on Apr 17, 2008 13:02:11 GMT
Hi Jacob, How can a 'rounded bevel' be constant at any particular angle? A rounded bevel has a radius and the 'angle' or tangents are continually changing as you go around the 'curve'. (Dictionary says: A bevel is a plane surface formed by two surfaces meeting at any angle that is not 90 degrees.) snip Sorry hadn't quite answered your question: the constant angle on a convex bevel will be along any line drawn across the bevel. So at the cutting edge this would be a constant 30 deg (if that's what you honed at). Beyond the cutting edge the bevel it would be less - but a constant angle along a contour line so to speak. cheers Jacob |
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Post by evergreen on Apr 17, 2008 13:17:45 GMT
Jacob
Strange how you just happened to "spot" a honing guide made of Lexan. I bet your hard drive holds hundreds of images of shiny tools, tools with brass knobs, tools with rosewood handles. And lots of honing aids, including videos of them in use. All collected in the name of "research", no doubt. Who are you trying to kid?!
Regards.
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Post by mrgrimsdale on Apr 17, 2008 15:28:28 GMT
Jacob Strange how you just happened to "spot" a honing guide made of Lexan. I bet your hard drive holds hundreds of images of shiny tools, tools with brass knobs, tools with rosewood handles. And lots of honing aids, including videos of them in use. All collected in the name of "research", no doubt. Who are you trying to kid?! Regards. Pure chance, honest! It was top of the list when I clicked on Crazy Sharpening Industry ;D ;D Might have moved a place or two, it changes regularly cheers Jacob |
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; as long as it lies below the 30 deg tangent it has absolutely nil effect on the cutting edge. And if a plane iron - 