Black& Decker tool identification

[BazyleParticipant @bazyle]

Anyone recognise this tool? It says on the back “Black & Decker 1 3/4″ 30degree Use by Hand”. Central hole is 1/2″. No part number.
The 7 inserted teeth are serrated on the leading edge.

My initial guess is some sort of chamfer / deburr tool for plastic drain pipe.

Google image search sort of pointed to a video in German but it didn’t actually include an image of the device – google fail.

[Bazyle]

On 28 November 2024 at 22:30 Bazyle Said:

Anyone recognise this tool? It says on the back “Black & Decker 1 3/4″ 30degree Use by Hand”. Central hole is 1/2″. No part number.
The 7 inserted teeth are serrated on the leading edge.

My initial guess is some sort of chamfer / deburr tool for plastic drain pipe.

Google image search sort of pointed to a video in German but it didn’t actually include an image of the device – google fail.

Tidy that picture up a bit, and you might get better results … as did I

MichaelG.

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[noel shelleyParticipant @noelshelley55608]

A valve seat cutter. Noel.

[noel shelley]

On noel shelley Said:

A valve seat cutter. Noel.

Yes, I have one myself, though I’ve never used it.
B&D also made valve grinding machines too.

Bill

[bernard towersParticipant @bernardtowers37738]

Yes as the above.

[BazyleParticipant @bazyle]

Thanks, that explains the video link I mentioned that was about boring seats just not using the cutter. Maybe it flashed up a picture of the cutter that was just enough for the machines to latch onto. That in itself is interesting.

[Bazyle]

On Bazyle Said:

[…] Maybe it flashed up a picture of the cutter that was just enough for the machines to latch onto. That in itself is interesting.

Yes, interesting … because there is a notion in psychology about the ‘cognitive reference frame’ and you have basically demonstrated that the machines work in roughly the same manner.

MichaelG.

[BazyleParticipant @bazyle]

MG is that related to subliminal advertising that got banned a few decades ago? It might be interesting for a youtuber to insert an unique image briefly of something like a pattern or painting that cannot have had other internet exposure. Then see if google finds it.

[Michael GilliganParticipant @michaelgilligan61133]

Yes, somewhat related, because it’s what drives that sort of subliminal effect.

The cognitive reference frame is built-up by lived experiences, and is the ‘template’ by which you can tell-at-glance what something is [or at least is likely to be]

Playing games with it is the source of some excellent optical illusions.

MichaelG.

[Author]

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