New blocks on the kid ?

[John Stevenson 1Participant @johnstevenson1]

[John Stevenson 1Participant @johnstevenson1]

Or is that new blocks on the block ?

Not an advert because I'm not selling them but coming to a store near you shortly.

5C collet blocks in hex and square, been around for years, very handy for dropping in the vise and doing to odd quick and dirty hex or square by just turning the block over with the part in the 5 C collet.
Ideal for laying down but not so handy stood up.

Soooooooo……….

Allow me to present the same style of block but in ER32 format.

Advantages are shorter, can stand upright on the ground to a gnats left bollock rear face, no gaps from 0.5mm to 20mm with the ER 32 series collets. That's 20 thou to just over 3/4" for the unwashed.

Added bonus is when used in the horizontal mode because the nut is larger than the body the back surface of the nut can be used as a dead stop in the vise.

Very precise macro photo reworked in photoshop to give the impression of a blured image [ not easy I can assure you ]

PS, The floor has also been done in Photoshop.

John S.

__________________
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[NJHParticipant @njh]

Nice idea John – but photography – maybe stick with metalwork?

N

[JasonBModerator @jasonb]

The backstop facility must be governed by how much you tighten the nut. So you could get bit of a different setting each time you change a part.

J

[John Stevenson 1Participant @johnstevenson1]

Yes but they will be consistantly wrong if you don't measure the first cut

John S.

[Flying FiferParticipant @flyingfifer]

John,

Just when I was going to buy a set of ER20 collets you come up with this ! Looks like I`ll have to save up a few more pennies for an ER32 set.

Like your 1-2-3 blocks another brilliant idea. Whats next???

Alan

[chris stephensParticipant @chrisstephens63393]

Hi John,

Nice idea but I have one slight quibble, don't ER32 collets only go down to 1.5mm (if you buy Arc's 2.0-1.5 special) or 2mm (3-2mm) if you buy the usual ones.

chriStephens

[John CParticipant @johnc47954]

Hi John,

Are there any plans to do the same in ER25 size?

Thanks,

John

[Stewart HartParticipant @stewarthart90345]

Great inovation.

I can see quite a few uses for then.

They are going on my shopping list

Stew

[Ian PParticipant @ianp]

Posted by John Corden on 23/03/2012 07:12:26:

Hi John,

Are there any plans to do the same in ER25 size?

Thanks,

John

This is another request for ER25

Or, what about a ER25 ID to ER32 OD adapter sleeve (and 'washer' for front of collet?)

Ian P

[Ian PParticipant @ianp]

John

Are the blocks through drilled to accept work longer than the collet?

Ian

Edited By Ian Phillips on 23/03/2012 08:48:00

[Russell EberhardtParticipant @russelleberhardt48058]

On my shopping list. Much easier than winding the handle on my dividing head 22.5 turns between each face to cut squares!

Russell.

[Les Jones 1Participant @lesjones1]

They also look useful for holding milling cutters for sharpening on one of Harold Hall's grinding rests. I too would like them in ER25 size.

Les.

[John HaineParticipant @johnhaine32865]

Er40 for me – I bought a set for my big bore super7.

[Ketan SwaliParticipant @ketanswali79440]

Link here:

http://www.arceurotrade.co.uk/Catalogue/Collets/ER-Collet-Fixtures

Ketan at ARC.

[Another JohnSParticipant @anotherjohns]

JohnS – For the marketing types:

With expensive sets (top quality??) of ER-16, ER-25 and ER-40, I doubt I'll pick up a set of ER-32 collets just to use with these blocks… Funny that they only come in 1 size…

Another JohnS.

[David Clark 13Participant @davidclark13]

Hi there

No need to spend a fortune.

Buy a parallel shank ER holder, drill and bore hexagon and/or square blocks to suit and grubsrew and Loctite the shank in the block. Dirt cheap from Honk Kong and Ebay.

Job done and very cheap, you could use a smaller ER system as well.

regards David

[John Stevenson 1Participant @johnstevenson1]

Posted by David Clark 1 on 23/03/2012 12:44:52:.

Dirt cheap from Honk Kong and Ebay.

regards David

Bit of a smack in the eye for your advertisers David ?

John S.

[peter walton 1Participant @peterwalton1]

I think the real benefit David is if you already have ER32 collets and nothing gained on the price that I can see!

peter

[john jennings 1Participant @johnjennings1]

These are very similar to some lower tech items I made some years ago.

The start point was a number of spare chucks (5/16 capacity) for some brand or other of handrill (the sort with a geared handwheel disc driving pinions) bought after a local store had a flood. The chuck screws on to the main arbor and is closed as the arbor screws home and therefore has a 0 to max capacity.

After cleaning and derusting the initial addition was a T handle to use primarily as a tap wrench.

This was followed by a 1" square and 1" hexagon bars (3" long ) turned and screw cut one end to receive the chuck. The required thread was some odd diameter 19 t.p.i. but needed screwcutting anyway to ensure concentricity.

Not precision kit but a useful trio of extra hands.

[modeng2000Participant @modeng2000]

That is just what I'm thinking of doing David since Arc Eurotrade do not have the ER25 size.

John

[David Clark 13Participant @davidclark13]

Hi John S

I am not aware of any advertisers who do parallel shank ER adaptors, certainly I could not find any when I purchased mine a year or more ago.

regards David

[Ian PParticipant @ianp]

For this type of tooling I cannot see the DIY aproach being either time or cost effective. If you follow DC1 suggestion and drill hex and square bar you will only get the level of accuracy that is inherent with material stock, in other words not that great! Certainly it could be drilled or bored to the best of your own ability but the faces, as drawn or extruded, are only hexagon and square in name only (although the angles do total up to EXACTLY 360 degrees). If you are going to the trouble of making precision tooling then the blocks should be ground on all faces.

John, Are your blocks ground all over?

Also, If you ever produce an ER25 version will the AF size of the blocks allow them to sit flat without the nut fouling the table?

Ian

[Ketan SwaliParticipant @ketanswali79440]

Posted by David Clark 1 on 23/03/2012 15:41:41:

Hi John S

I am not aware of any advertisers who do parallel shank ER adaptors, certainly I could not find any when I purchased mine a year or more ago.

regards David

Well, if you didnt sit on s***bay and instead bothered to read the Arc catalogues which are sent with ME and MEW over the past few years, you might have noticed the ER11 and ER16 parallel shank ER adaptors!

[Ketan SwaliParticipant @ketanswali79440]

Posted by Ian Phillips on 23/03/2012 15:44:13:

John, Are your blocks ground all over?

Also, If you ever produce an ER25 version will the AF size of the blocks allow them to sit flat without the nut fouling the table?

Ian

The blocks are toughened (not hardened) and ground. We are working on the ER25. To the best of my knowledge, the nut will protrude from the body, based on JS's decision, which he will explain.

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