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Model Engineering in UK - Model engineering, metal crafts in UK
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Posted by on August 21, 2006, 11:55 am
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anotherid wrote:
> Since it seems to be agreed that ER collets are a good thing, how do I
> choose a set?
>
> I can see an ER25 set from Warco for =A399. The collets have a range of
> 2mm.
>
> From Chronos I see a set for =A3190! The collets however look to have a
> range of just 1mm.
>
> From the previous post, I presume that the 1mm collets will be better?
> But is it worth paying all the extra to get that? My mill is a Warco
> WM-16 (3/4 HP), so relatively light cuts are all I can take.
>
> Any other suggestions for where/what to look/for? I did find a place
> called (I think) Axminster and requested a catalogue from them, but
> nothing ever turned up so I gave up on them.
>
Brendan
Have a look at the ArcEuroTrade website under colletts, they offer
limited sets that cover the basic range that Nick has identified for
about =A370 includng a collett chuck, with individual colletts at about
=A35-7. I personally feel that colletts with a range over 1mm would be
pushing the limits of the material.
Although I have a full set of ER32 by Vertex which are superb I also
have several individual (un-named) colletts from J&L and ArcEuroTrade,
I cannot see any differece in their performance. The only issue that
strikes me about a part set is that you will be limited in what size
drills you can use and being able to swap between cutters and drills is
a major advantage for me. A full set of ER32 covers 2mm - 20mm range
and ER25 covers up to 16mm. Have a look for show offers I suspect that
even Chronos will be cheaper than you quote at the Midlands exhibition,
I think I paid about =A3150 for the full set with chuck and spanner.
Best regards
Keith
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Posted by anotherid on August 21, 2006, 1:47 pm
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jontom_1uk@hotmail.com Wrote:
> wrote:[color=blue]
> Although I have a full set of ER32 by Vertex which are superb I also
> have several individual (un-named) colletts from J&L and ArcEuroTrade,
> I cannot see any differece in their performance. The only issue that
> strikes me about a part set is that you will be limited in what size
> drills you can use and being able to swap between cutters and drills
> is
> a major advantage for me.
That's exactly why I want them! I have a drill chuck, but it's a hassle
removing it when I want to use a mill, especially as sometimes the
drawbar seems to get well and truly stuck in the arbour and I have to
hammer the spanner I'm using to undo the drawbar to get it to turn. I'm
worried that this is not doing the drawbar any good at all! So, I'd like
to fit a collet chuck and mostly leave it in place, yet still be able to
switch between drills and mills (and edge-finder). Looks like I may be
stuck with going for a "full" set.
Brendan
--
anotherid
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Posted by =?ISO-8859-1?Q?Nick_M=FCller?= on August 21, 2006, 4:52 pm
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> especially as sometimes the drawbar seems to get well and truly stuck in
> the arbour and I have to hammer the spanner I'm using to undo the drawbar
> to get it to turn.
You really don't have to tighten it that much. A short lever (and no
second key) is enough. You do have MT? It is self locking.
> So, I'd like to fit a collet chuck and mostly leave it in place, yet still
> be able to switch between drills and mills (and edge-finder). Looks like I
> may be stuck with going for a "full" set.
Of course it is better to have a full set. :-)
Edge finders do have a 10mm shaft.
Nick
--
The modular DRO
Available now in USA / Canada
<http://www.yadro.de>
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Posted by anotherid on August 21, 2006, 5:35 pm
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=?ISO-8859-1?Q?Nick_M=FCller?= Wrote:
> wrote:
>
> > especially as sometimes the drawbar seems to get well and truly stuck
> in
> > the arbour and I have to hammer the spanner I'm using to undo the
> drawbar
> > to get it to turn.
>
> You really don't have to tighten it that much. A short lever (and no
> second key) is enough. You do have MT? It is self locking.
>
>
Ah, I've always tightened the top of the drawbar with an 8mm spanner
after
screwing the (MT2) arbour onto the bottom. Maybe I should just do
it up finger
tight?
Brendan
--
anotherid
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thread: http://www.rcgroups.com/forums/showthread.php?t=557535
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Posted by =?ISO-8859-1?Q?Nick_M=FCller?= on August 21, 2006, 7:22 pm
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> Maybe I should just do it up finger tight?
Not that little.
Just a medium pull. When opening it, it should go loose with a jerk
(mill in one of the lower backgears).
The drawbar on my mill got twisted by some idiots that closed it to
much. No, the idiot was not me, it is at least second hand.
Nick
--
The modular DRO
Available now in USA / Canada
<http://www.yadro.de>
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> choose a set?
>
> I can see an ER25 set from Warco for =A399. The collets have a range of
> 2mm.
>
> From Chronos I see a set for =A3190! The collets however look to have a
> range of just 1mm.
>
> From the previous post, I presume that the 1mm collets will be better?
> But is it worth paying all the extra to get that? My mill is a Warco
> WM-16 (3/4 HP), so relatively light cuts are all I can take.
>
> Any other suggestions for where/what to look/for? I did find a place
> called (I think) Axminster and requested a catalogue from them, but
> nothing ever turned up so I gave up on them.
>