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Thread: In house Carbide tipped tool
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20th July 2008, 12:15 AM #1.
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In house Carbide tipped tool
Talking to one of the techos at work about carbide bits and he showed me a small box with a a dozen or so blunt, chipped and broken tips from some of our metal working lathe tools and said I could help myself. Amongst that lot I found 4 that looked OK and touched one up on a diamond plate.
Initially I just attached one to a piece of mild steel but then I found this sweet piece of square section SS. I might have to reshape the end of the SS piece to better fit the tip.
I then played around with it on the lathe and applied it to a lump of white painted Jarrah scavenged from a skip two doors up. The piece was a big splinter attached to a 10 x 2" pergola beam poking out of the end of the skip Result - one Jarrah handle - quite pale jarrah too. I love it when a tool participates in making itself!
The diagonal shaped tip makes it easier to use in one direction but I have to say I was very impressed with finish it generates - very smooth.
Ferrule is the dome of an old brass tap.
Total cost of materials - zip!
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20th July 2008, 01:11 AM #2
Bob,
Looks good. by the look of it you have a positive rake on the top of the tip. Also you have a shining radius effect on the cutting edge, indicating it may need a touch up on a silicon carbide wheel. When you sharpen it, it will bit some thing fierce, so take it easy.
Other wise well doneInspiration exists, but it has to find you working. — Pablo Picasso
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20th July 2008, 11:42 AM #3
Hi Bob,
Top job, like the handle too, (colour and price). Trust you to make a great tool out of,... well nothing.
I will have to drive up your street from time to time as that skip of timber up the road seems to be perpetual. Or have you got a golden goose that makes skips of timber materalise at your doorstep?
Keep up the tool making, always makes for interesting posts.
Cheers
Pops
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20th July 2008, 01:24 PM #4.
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Cheers Pops and Hughie,
RE: Positive rake + shining radius.
Thanks for the advice, it already cuts very well so I might just leave it.
That skip is one of about 5 skips in the are that have yielded so many goodies that I have had to stop, as my back yard is starting to look like a set for Steptoe & Son.
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20th July 2008, 06:54 PM #5
Hey Bob,
You haven't seen my yard .I got stuff I"m too scared to use in case ineed it for something else.
Great looking tool BTW.
Kev."Outside of a dog a book is man's best friend ,inside a dog it's too dark to read"
Groucho Marx
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20th July 2008, 08:20 PM #6
Nice tool and nice price
There was a skip up the road from me, kept a close eye on it, only had broken bricks and garden waste in it, not a plank of wood to be seen
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20th July 2008, 10:16 PM #7.
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Thanks Kev and SM.
RE: I got stuff I"m too scared to use in case ineed it for something else.
That is not a good sign - I'll try to avoid that condition.
Today I drove past a skip and it had 2 new , 135 mm wide Jarrah floor boards poking out the top. I blinked but kept going - I'd just spent the day milling a cubic metre Jarrah log.
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25th July 2008, 10:50 PM #8
Here you go, a couple of pics on TCT tools.
The first one is from USA website, the second is my version of sameInspiration exists, but it has to find you working. — Pablo Picasso
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27th July 2008, 09:25 PM #9
beautiful piece of engineering bob.Can I ask did you use a self tapper or did you cut a thread in the bar ? and I noticed in the pic of hughies that one of the pieces looks to be braised on to the bar ,is that possible ,.The reason is I have just obtained a couple of tungsten bits and I was thinking of doing the same .
cheers dennis
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27th July 2008, 10:03 PM #10and I noticed in the pic of hughies that one of the pieces looks to be braised on to the bar ,is that possible ,.The reason is I have just obtained a couple of tungsten bits and I was thinking of doing the same .
Now the silver soldered type are the cheaper variety and available through places like Hare and Forbes etc.Inspiration exists, but it has to find you working. — Pablo Picasso
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27th July 2008, 11:09 PM #11.
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Thanks Denis. I tapped a 5mm thread in the SS bar. Stainless thread cutting is not my idea of fun. I lingered while drilling and overcooked the hole and the carbon steel tap wouldn't bite properly and I ended up just wearing the thread cutters off the carbon steel tap. I recut the notch and this time drilled the hole in a more positive manner using a freshly ground bit and lube. I also used a tungsten alloy tap - this time it worked OK!
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28th July 2008, 10:22 PM #12
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