The Shop > Wood & Stuff
Banjo Build
S. Heslop:
--- Quote from: efrench on May 01, 2015, 10:20:55 PM ---I think you would be better off with turning the original toolpost 90 degrees and make a beefier tool that can handle a two or three inch overhang. One easy to make boring tool for wood is to drill a hole in the end of a 3/4" mild steel rod and insert either a round or square HSS tool bit in it. Secure it with a set screw. The hole can be anywhere from 90 degrees to the axis to on the axis. Broken endmills work well for this.
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That's not a bad idea. I'm not so worried about the tool itself having too much overhang though, and more concerned that the extra leverage will cause trouble with the fairly flimsy wooden arrangement.
chipenter:
I would use TC inserts just bolted onto a bar with a lever arangement for feed , there are wood turning chisels that take inserts available and they last for ages ,
RobWilson:
--- Quote from: efrench on May 01, 2015, 10:09:47 PM ---
--- Quote from: RobWilson on May 01, 2015, 03:19:08 PM ---
--- Quote from: efrench on May 01, 2015, 04:43:41 AM --- Car shock absorber rods are usually HSS .
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You sure about that ? :scratch:
Rob
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Yes. It's easy to tell. HSS will create orange sparks when ground. High carbon steel sparks will be yellow.
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Interesting , I will look into that , just cant see why they would use a tool steel in car shocker rods .
Rob
DavidA:
Efrench,
It's not that simple.
There are lots of steels that will produce sparks of this colour.
I spent the last seven years of my working life producing samples for spectrograph (and chemical) analysis. There was a lot of grinding involved in this.
We had a few shock absorber shafts to check, as I recall, non of them were made from HSS. Just heat treated high quality steels.
I suppose one could test this by getting an old shock absorber shaft and trying to make some lathe tools from it. See how the edge holds up.
Dave.
vtsteam:
Now there's a practical suggestion. :thumbup:
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