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Alfred Herbert Coventry Die Head Chasers worth anything

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Michael Garbutt 103/07/2016 20:39:23
51 forum posts
2 photos

So i got these with a Myford im restoring. I have no idea if they are worth anything but i cant see me using them as i have no idea how + i need to get a drip tray or stand for the lathe. Are these worth anything to any one ?

13606570_10153916097986919_3632980932492786957_n.jpg

David Colwill03/07/2016 20:45:38
782 forum posts
40 photos

If you have full sets they do sell on ebay. I believe you can use them singularly as chasers on a lathe but have never tried it.

Regards.

David.

Andrew Johnston03/07/2016 22:10:45
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7061 forum posts
719 photos

There seem to be almost no un-modified chasers, let alone complete sets. Although I use Coventry dieheads they're of no earthly use to me. I suspect they're only fit for the scrap bin.

Andrew

Enough!04/07/2016 00:56:12
1719 forum posts
1 photos

Tracy Tools use similar items in their hand-chasers. Maybe they'd be interested.

robert branch04/07/2016 01:39:12
2 forum posts

usually these die sets are 4 pce ,and are sharpened specially as set of four , quite often in jobbing shops you use the worn out,broken ,remaing peices [as what is in your picture] for some of the following,thread chasing, single point threading, ground to make full form profile tool, radius form both concave and convex, [as parent material is hss ,most reuse the peices and regrind to suit applicable task for one offs{might be for 100 plus items done as one off job}than purchase a new peice of hss [expense] and grind profiles into that peice.

some turners make holders with suitable clamping section to hold altered alfred herbert die piece that they then hold in capstan or revolving toolpost,

hope this explains why you only have bits and peices of die sets , and why some have been reground/repurposed

cheers rob

mick05/07/2016 17:42:22
421 forum posts
49 photos

They can be used for cutting multi start threads when mounted in the tool post, or for cresting screw cut threads when mounted in on a suitable handle. Or just use the HSS as tool bits First law of model engineering, throw nothing away as it will useful one day!!

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