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遗憾是转载的鬼文，原地址
此工具是砂带机磨刀的辅助工具，能有效提高磨刀的工整度。我就不献丑翻译了，只做了简单的注解不能和原文的说明性媲美，请英文好的刀友翻译吧！
第一是要为砂带机装备一个加长型的磨床（就是打磨时使用的托板），这个磨床还得能调整角度。
( I personally use a 1 inch 1 HP vertical grinder for small blades and a 2 inch 2 HP KMG clone for the larger blades) you need to make a table extension mine is 14’’ long x 3.5’’ wide this needs fixing to the small work rest, like this
(You need to be able to adjust the table to belt angle, (tilt) A )
第二，准备一块90度直角的钢卡，上面再用螺丝附加上一个小卡子。
Next you need a small rigid clamp that can hold the blade blanks at 90 deg to the vertical
Having cut out your blank, in this case a Bushcraft knife (which is going to have a 20 deg bevel)
在刀条上标好中线（A），边线（B）8毫米留白。
Fit the blank to the clamp and mark the centre line A and mark a bevel line, B at about 8mm (this is only for a guide as you are grinding) also mark the blade so you can put in back in the clamp in the same place
把磨床调整到合适的角度。
Now set the table of the grinder to the desired angle for the bevel, in this case it’s 10 Degrees for an inclusive angle of 20 degrees
固定好刀条，开磨！
Right now the grinder is set and the blade is in the clamp so you are ready to go,
With the grinder switched OFF. Put the blade/clamp assy onto the table at the start point of the grind and hold it firmly against the belt, this will give you a ‘feel’ for the best position to hold the blade/clamp you may also want to move it backwards (direction A) and see how best to move it so the blade stays in contact with the centre of the belt along its lenght, at B, when you have got it right switch the machine on and start grinding you don’t need much pressure on the blade let the grinder do the work and bring the blade backwards steadily keeping it in the centre of the belt (you will see if it is in the centre by the sparks) if you get it right it should look like this after a couple of strokes
Now all you have to do is carry on, use the black line as a guide, if you keep the bevel even and the blade is parallel it will automatically line up on the centre line,
When you are very close to the centre line simply turn the blade round in the clamp and grind the other side bevel, (cool the blade down every so often in water it gets HOT) take care as you work towards the centre line, and measure the width of the bevels to get them even, when the bevels are just about to meet, remove from the clamp, finish off the blank drill etc and harden and temper, then you can finish of the bevels in the grinder with a fine grit belt(don’t move the table as it’s very difficult to get exactly the identical angle again) if all went well your blade should look something like this
OK the above isn’t perfect but it works for me, If any one has got any variation on the above would be interested to here it. I use a very similar method on the KMG grinder this time all I have to do is alter the angle of the platen head for the same result, for all you boys & girls doing your bevel grinding freehand you have my utmost admiration, tried it many times, can do it, but the grinder needs to be slow!, the results aren’t consistent and it takes along time.
By setting the table and using this method you can grind at any chosen angle, my personal favourites are 20 deg for single bevel,
8 deg for a ‘half’ bevel with micro secondary bevel (table at 4 deg)
And 5 deg for a full flat grind with micro secondary bevel (table at 2.5deg)
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发表于 2009-6-23 04:23
