- Thread starter Martin-Sy
- Start date
Yes, sadly not compatible. They definitely aren't cheap new.
@fizzy do you already have a collet that fits? Post or message a picture and we can compare with the ones I've got.
Or if anyone has a chuck they'd like to sell me...
daedalusminos
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You can pick them up new and lightly used on eBay - I think I paid £60 for a new old stock and then approx £13ea for these:
Smouser
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Nice!
How do you like them?
I suppose you have experience with other collets (ER type).
How do they compare?
Are the Burnerd ones your 'go to' collets?
What's a KC?
@Martin-Sy so that's a multi-size whereas my collets are multi-bore. Easy to get the names mixed up.
Lc = lever operated
KC = key operated
... If I'm not mistaken after a quick Google.
Lc = lever operated
KC = key operated
... If I'm not mistaken after a quick Google.
The ones I've seen used the bed attachment, but it could be either.
The open/close lever position may not be very convenient though.
daedalusminos
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They're brilliant each collet probably has a larger range than ER's of a similar capacity....if there is anything similar, and the lever operation makes opening and closing faster.
The small EC2 size is obviously subject to damage. I'm guessing if you haven't got enough material engaged and it comes loose it will tend to chip the jaws - the set that came with my lathe had 3 of that size with damaged jaws. I bought this off eBay to replace:
I do find swapping between collets a bit of a faff though - the front ring can be tricky to re-install, but that's a minor inconvenience.
I've had a quick look at what might work for the fixed pivot today.
I already have a bit of CI machined to clamp to the tailstock ways.
I think that the operating lever, which screws into the boss on the LHS, would be comfortable to use at about 25 degrees above horizontal.
Perhaps a chunky bit of bar bent into a U shape [(180 - 25) degrees] and bolted to the base would suffice.
I already have a bit of CI machined to clamp to the tailstock ways.
I think that the operating lever, which screws into the boss on the LHS, would be comfortable to use at about 25 degrees above horizontal.
Perhaps a chunky bit of bar bent into a U shape [(180 - 25) degrees] and bolted to the base would suffice.
Mine isn't much more! This may well be the blind leading the blind as they say.
Anyway, after trawling through the scrap box the best I could come up with was a tatty bit of 12mm plate about 32mm wide.
Ideally I would have used something a bit longer then trim the ends after bending rather than try to get the bend in the right place to start with.
It needs a lot of fettling and I will make another base as the one in the picture is part of another setup.
To be continued!
Smouser
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I like it.
There can always be a version 2 at a later stage if version 1 is not 'perfect'.
I played a little with my chuck today (it is just on my bench as the lathe it needs to go on is still under cover on the drive). One thing I noticed is that the handle does not lock when I 'close' the collet. I was expecting the handle to lock to maintain pressure on the collet.
I really need to go and try to find a few videos of these chucks so I can see how they should work.
Hopefully, my chuck is not knackered
There can always be a version 2 at a later stage if version 1 is not 'perfect'.
I played a little with my chuck today (it is just on my bench as the lathe it needs to go on is still under cover on the drive). One thing I noticed is that the handle does not lock when I 'close' the collet. I was expecting the handle to lock to maintain pressure on the collet.
I really need to go and try to find a few videos of these chucks so I can see how they should work.
Hopefully, my chuck is not knackered
This should be the short vid:
Lever operated collet chuck lash-up
Lever operated collet chuck lash-up
Agroshield
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AIUI, and looking at a very early picture in this thread (with the slotted hole), the handle itself should not be 'tight' or 'locked' in either the open or closed position. The detent balls within the chuck are what keep it closed.
You would not want pressure on it in that manner while it is rotating - the bronze guides that sit between the lever bridle and the chuck body need to float when it is turning.
