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bogstandard:
John,
With reference to the collet system you have shown, I too used to have almost the same thing.
One major problem with it. It will only hold metric sized cutters of the size marked on the collet. No leeway at all to hold other sizes. To hold imperial, you would have to buy the matching imperial collets, not an easy thing to find at this time with ER systems taking over.
The advantage of the ER system is that it has a 1mm gripping range in each collet, so a 7mm collet can hold between 6.01mm to 7mm, so it is easy to accomodate imperial collets when you eventually find a big cheapy stash of them at an auction or elsewhere.
The cutters don't seem too bad, but look a little pricey. I don't usually buy sets of cutters, just however many I want of one size. You would most probably find, you wouldn't use half of the obscure sizes amongst them, and if you break the 3mm one making a 3mm slot, what are you going to do?
I would honestly consider getting them imported say from Arc Euro if you can't get them at a decent price at home. Drop them an email and find out how much the shipping would cost.
http://www.arceurotrade.co.uk/Catalogue/Cutting-Tools/Milling-Cutters/End-Mills
Here is a bit if reading fodder to get your head around, to explain what I mean about ER collets.
http://www.arceurotrade.co.uk/Catalogue/Collets/ER-Collets-Collet-Chucks
John
John Hill:
Thats the sort of advice and information I am looking for John, I had wondered at the range for each collet, so ER is what I want especially if as you say ER is taking over!
I had not considered buying from the UK as, and this instance is a remarkable exception, UK princes are usually quite high compared to NZ. US prices are usually cheaper but US vendors appear to be afraid of any postal service and will only send by courier or equivalent with puts small items out of contention.
Bed time now, work tomorrow but with a bit of luck I will be able to study those links you gave.
Cheers
The Artful Bodger
John Hill:
John Bogs
This locally available collet set
claims to be an ER collet chuck, are you thinking it is not? Or maybe you think the collets are not ER collets? On reviewing the price this one with seven collets is 68 quid while the Arc Euro Trade MT3 ER25 set with six collets , #050-110-25510 is 63.50 quid, cheaper but unlikely to cover postage, maybe not even cover a pint for us at The Rovers!
Sorry if all the questions are an annoyance but I have literally sheds full of stuff I have bought over the years in search of what I really wanted :doh:
John
bogstandard:
John,
That IS NOT an ER collet set. ER has a lot more slots around them, allowing them to collapse and thus have a large holding range. Even the holder and nut is wrong.
ArcEuro do a few in this range you are showing, in their get rid of stock. Look at the Non Standard Chinese Collets on here.
http://www.arceurotrade.co.uk/Catalogue/Clearance-Items
Then look at a real ER collet, and notice the difference
http://www.arceurotrade.co.uk/Catalogue/Collets/ER-Collets-Collet-Chucks
Just going a bit off topic here.
It looks like your supplier can't tell the difference between his a**e and elbow. Or he is trying to pull a fast one, getting rid of unshiftable stock by misrepresenting what it really is. The easy way to find out is to send him the two links I have put on this post and ask him the question, or even better, send him a link to this post, and see how much his anal sphincter twitches. Then you will know straight away if he is an engineering supplier or just a box shifter.
I personally take no prisoners when dealing with people like that. It is up to them to show you correct and true information, so that you don't waste your money on something that will not do the job you want it to do.
Over the last twelve months, by being brutal, it has saved me well over 2000 squid in discounts on machinery, and given me a few very nice sweeteners as well, in the form of free machine tooling and accessories.
But you must make sure your facts are correct, otherwise you will end up with a very red face.
Just to push you towards ER a little more, they can also be used to hold normal shank twist drills as well. They just collapse down to a good fit.
Ebay suppliers from China usually have a very good price break for full ER collet sets, and maybe that is the way for you to proceed to get them a little cheaper. Just factor in about 20% for your import duty on the cost of the item (not the postage) and you should be able to see what is the best price. I also allow about 14 days for delivery from China, but it is usually a lot less.
John
John Hill:
Right John, I will send him a query, yes I think you have convinced me that ER is the way to go as I certainly want a reasonable range of sizes covered for cutters, drills, whatevers, without gaps.
The local supplier might be trying to box clever with words as he states the chuck is ER and conveniently does not mention the collets........ :coffee:
BTW, such items privately imported into NZ should in theory attract 12.5% GST (i.e. VAT) but if the order is less than about 300 of your squids they do not collect the tax. It is usually the cost of insured postage that kills small imports for folks like me.
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