Gallery, Projects and General > Neat Stuff

Finishing Tool

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Bernd:
Don,

I brightened up the screen. I now can see how the tool works. :bang: :bang: Thanks. I think the wife gave me to many  :wack: :wack: :wack: :wack: today.

Time for another  :beer:  :lol:


Bernd

khand:
No disrespect taken. This was a file I downloaded. I have never seen this tool anywhere else so I just like to pass it on when I can. You're not using the top like on normal cutters, but rather using the side of the tool. Set the tool so the top is anywhere above the centerline and the bottom of the tool is below the centerline. If I'm turning to a shoulder, I set the tool as high as possible to I can get closer to the shoulder.

andyf:
I've had one of those tools for a long time - it's described in my 1962 copy of "Using the Small Lathe" by L C Mason (I bet they called him "Elsie" at school) :lol:.
It gives a nice finish on final cuts of 1 thou or so. You can't get right up to a shoulder with it, though, because the bottom corner of the cutting edge is nearer to the headstock than the part which is doing the cutting, .

Andy

joegib:
Here's an extract from the book "Using the Small Lathe" mentioned by andyF and describing this tool:



It's different from the tool mentioned by the OP in being made from circular section tool steel. That allows you to vary the angle of attack from 45 degrees if that produces a better finish. True, you can't use the tool right up to a shoulder but you can reduce interference by packing up the tool so that only a part of the 'south west' edge is at workpiece centre height. I suspect it's easier to make than the version using square tool steel. Basically, it's a circular bit with a notch ground out using the corner of the grinding wheel. It's not a hogging tool — you wind it in until it just touches the work surface and the swarf comes off like a cobweb.

Joe

khand:
I used a belt sander to make mine but a round tool looks like it would be easier. Scoop up those cobwebs and you got a ball of steel wool to polish the part a little more.

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