Combi-Die

This topic has 2 replies, 2 voices, and was last updated 29 January 2020 at 14:42 by Ex contributor.

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29 January 2020 at 14:20 #449632
ega
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@ega
I had not heard of this before I saw the current items for sale. There is some information here:

https://www.newmantools.com/taps/combidie.htm

including the statement that perfect threads are produced without reversing.

This is a hand applied tool and not one I would have much use for but I would be glad to know how the no reversing feature works. Perhaps the holes intersecting the thread are that much bigger?

Edited By ega on 29/01/2020 14:20:34
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29 January 2020 at 14:20 #19609
ega
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@ega
How does it avoid the need for reversing?
29 January 2020 at 14:42 #449638
Ex contributor
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@mgnbuk
The rather poor picture does show quite large holes & accumulations of swarf within, so maybe more clearance here helps with chip evacuation & removes the need to reverse the die to break the chips ?

Nigel B.
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