Reshaping an in-shave

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Blog entry by andyboy posted 03-08-2012 10:50 PM 7299 reads 0 times favorited 6 comments Add to Favorites Watch

This tool had nasty flat spot. My mate altered it for me. Brilliant job Peter!

-- Andy Halewoodworker. You can't finish if you don't finish. So finish it, because finish is everything.

6 comments so far

View TheOldTimer's profile


226 posts in 3086 days

#1 posted 03-08-2012 11:50 PM

Loving it, keep them coming

-- TheOldTimer,Chandler Arizona

View Philip's profile


1277 posts in 2538 days

#2 posted 03-09-2012 12:02 AM

That is great, now we just need to see it in action! If you heat it up in the oven and let it cool doesn’t that de-temper the blade? I understood you needed to heat it up and then cool it rapidly as in the last operation in the video.

-- I never finish anyth

View canadianchips's profile


2600 posts in 2997 days

#3 posted 03-09-2012 12:40 AM

Nice video.
Ah that straw colored glow going into the quench pot. What does he use to quench.? My Grandpa taught me to use waste oil. Its smelly. Later my brother in law used salty water.

-- "My mission in life - make everyone smile !"

View andyboy's profile


565 posts in 3273 days

#4 posted 03-09-2012 06:51 AM

I think it is cherry red then quench in waste oil. Then sand clean and reheat to a straw colour or color for you American’s , and remove from heat and allow to cool naturally. Ive ‘e been wrong before so I will ask the expert over the nec couple of days.

-- Andy Halewoodworker. You can't finish if you don't finish. So finish it, because finish is everything.

View daltxguy's profile


1373 posts in 3914 days

#5 posted 03-10-2012 01:40 AM

Awesome – handy to have a torch like that for heating up.

Actually, Andy, when you get to the straw color ( or whatever color you pick as your end point), then it needs to be immediately quenched to stop it from tempering any more. A slow cooling will detemper it ( or maybe the correct terminology is that it will temper it too much) Basically you want to freeze it and stop the process when it gets to the desired color. So, I agree with Philip’s comment above.

The first step: cherry red, then quenching is the hardening ( in the video when he took it out and almost dropped it – if he had, your inshave would have shattered!)
The next step – heating until it changes to a <pick> color, then quenching is the tempering – this dials back the hardening so it isn’t so brittle and you can still sharpen it with a file but still holds and maintains an edge for cutting.

-- If you can't joint it, bead it!

View Philip's profile


1277 posts in 2538 days

#6 posted 03-11-2012 06:25 AM

Interesting Steve, I was tempted to hack up some old table saw blades and make tools ‘till I realized the pain in the neck that would be…maybe I’ll try it some day…Now we need to see a seat hollowed out

-- I never finish anyth

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