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Member postings for SteveI

Here is a list of all the postings SteveI has made in our forums. Click on a thread name to jump to the thread.

Thread: Clarkson Radius Grinding Fixture
26/12/2020 18:52:05


My MK2 attachment came with a few items that are not in the pictures shown so far. So I've put a few pictures into an album. If you want any measurements of the items pictured do let me know.

Oily Rag - I'd be interested to see pictures of the lathe tool radiusing holder you have. Is it anything clever?



Thread: Reamer size questions
27/11/2019 18:42:19

not quite london but drill service in horley do (or at least have in the past) ground reamers to a specified size. I am a satisfied customer.

Thread: hepworth copy attachment missing handle
23/06/2019 13:05:35


Sorry to side track your thread. I don't suppose you have details of the types of copy attachment hepworth made? I am looking for a unit for my lathe which is smaller than the M300 (10" swing) and has the cross slide drilled and tapped for a "copy attachment". Feel free to PM me as required.



Thread: Arrand boring heads.
26/05/2019 15:11:41


I should have been clear about the sizes; those are the names that Arrand gave the different models. Based around the maximum bore using a side tool. From the catalogue the outside diameters of the heads are:

the 3” head 1.3/8” or 35mm

the 4.5” 1.3/4” or 44mm

The 5.25” 2.1/8” or 54mm

the 6” 2.1/2” or 63mm

the 6.5” 2.3/4” or 70mm

8” boring and facing 3.1/2” or 89mm

10.5” 4” or 102mm

The catalogue I have does not mention a 3.25” head.

AFAIK Arrand does not manufacture any more but still trades selling from stock. I purchased my 3” head a few weeks ago direct from Arrand.I think rotagrip have some of the heads in stock according to their website.


25/05/2019 20:36:39


the 3” head uses M14x1

the 4.5” and 5.25” use 16mm x 1.5mm, the shanks are the same as their fly cutters.

the 6” I don’t know.

the 6.5”, 8” boring and facing and 10.5” all use the same shanks but these are held on by a register and 4 shcs.


Thread: New Toy
10/03/2019 14:45:28

Wow very interesting. Which options did you go for it?


Thread: MT4.5 sleeve
10/03/2019 14:38:35



Item 124 is most likely something other than a MT4.5 sleeve. Your link is to the southbend type of boxford. The X10 is the type with the D1-3 camlock nose bored for a MT4.5.



most likely plus VAT.



Edited By SteveI on 10/03/2019 14:38:56

10/03/2019 12:08:01

John Paton,

I am not sure that the MT5 and MT4.5 tapers are the same. Machinery's Hanbook (30th Edition) states that the taper per foot for morse taper 4.5 is 0.62400 and MT5 is 0.63151. When I made my MT4.5 sleeve (Boxford lathe) I used a MT7 as a gauge, which as far as I know is the only other morse taper which does have the same taper as MT4.5.

Also 2mm to grind is a lot to grind. If it were me I would want to turn away most of that 2mm before the grinding.

I am not sure what they cost but Boxford used to supply MT4.5 to MT3 adapters and MT4.5 to 5C collet adapters, and I think Grizzly in the USA used to sell MT4.5 sleeves as well.


Thread: 7" gauge Duke of Gloucester
14/01/2019 19:06:10


Thread: DIY Epoxy Frame based CNC MILL
13/01/2019 16:04:10

Hi John,

Wonderful job. Very interesting and I am working my way through the paper you linked to.



06/01/2019 10:15:55


Thanks for the updates, a most interesting build.

I am looking forward to learning about your linear rails and how they mount with particular reference to your need to lap the steel to the tolerances you quote. Which brings up the question what are you going to machine on this tool and what kind of tolerances are you aiming for?



20/11/2018 21:33:49


Wonderful thread and please do keep posting, the more detail the better!


Thread: Small slitting saws
09/10/2018 23:32:57


CR Tools in Sheffield have several options very close to what you want.


I have no connected except as a satisfied customer.


Thread: Harris Milling Machine Arbour Adjustable spacing collar
28/08/2018 12:47:02


I have been given a "Harris" milling machine arbour adjustable spacing collar. Picture here:


The collar is in 2 parts with a 20 TPI thread. The nut component has 50 teeth around its outside diameter. The screw part has 2 small tapped holes. Presumably for a ratchet to allow easy adjustment of the spacer by 1 tooth/thou, at a time. This ratchet mechanism is missing.

I am wondering if anyone knows of how this looked originally so that I can make a suitable replacement.



Thread: Ideal amateur lathe spindle nose?
28/08/2018 12:00:01


Thanks for keeping this thread alive. I have a feedback for you. The torque required to tighten ER50 collet's is considerable. Especially squeezing them down to the lower end of their 2mm closing range. This is based on my own experiments with some second hand regofix ER50 28mm, 30mm, and 32mm collets and a regofix ER50 ball bearing nut. you will need a very secure spindle lock on your design. Oversize collets are available for ER40 utpo 30mm. Something to think about.

I have recently come in to ownership of a small hardinge UM mill from the 1940's. Saved from the scrap man. Unfortunately this "lucky" find comes with a 5C (!!!!) horizontal mill spindle and no tooling. I am looking to design and make a new 30 taper spindle for it. So please keep posting your thoughts!


Thread: Cataract lathe by Hardinge Bros
19/06/2018 19:53:42


Interesting. What number spindle does your lathe have? A number 5 size has a spindle bore of approximately 1.25" stock and fits 5C collets. A number 4 is approx 1" stock and fits 4C collets, 3C I am not sure but fits 3C collets. There are 4 deg taper and threading spindle nose variants for the outside of the spindle noses.

There is a chap that is a regular poster on the practical machinist Hardinge forum who is a fountain of knowledge on Hardinge manual lathes and mills, especially the older models. His name is on the link Michael posted. I expect if you posted there you might also have chance to locate a replacement cross slide and possibly other accessories.


Thread: Manual for a Myford MG12 cylindrical grinder?
05/06/2018 20:11:53



Have your exact model and machine number to hand and contact **LINK**. They will have the correct manual and may well be cheaper than

The correct manuals are reasonably useful and should cover all your stated requirements.


Depending on the exact machine you have if it is the later type (12" wheel, and optional swing down internal grinder) there were factory collet options for 4C and 5C collets. The earlier type had a different collet type that I am not familiar with.



Edited By SteveI on 05/06/2018 20:13:18

Thread: A recommended live center?
05/03/2018 18:09:55
Posted by Michael Gilligan on 05/03/2018 09:57:59:

Posted by ega on 05/03/2018 09:41:54:

Gepy (Swiss) - good but expensive.



... actually, make that +2

Male and female versions are both superb.




Edited By Michael Gilligan on 05/03/2018 09:59:47

Make that a +3. Didn't GHT himself write something along the lines that a "rotating center is an essential accessory for everyone that can afford it.". I would add to that by suggesting the word quality should be at the front.

I had a second hand Rohm center and after using it on a good lathe I noticed a visual striping in the finish. I then got lucky on a second hand female center gepy and the finish vanished. Later to banish a major milestone birthday blues I got a male center gepy and I have not regretted it. One thing to note the standard GEPY has quite a short stub on the end and does not eject on all tailstocks. They used to do a variant P/N that had a longer stub. I don't know if they still do. It is of course a simple matter to turn up a replacement as they simply screw in and out.


Thread: Diamond grinding wheels
02/03/2018 16:37:48
Posted by StephenS on 01/03/2018 02:40:34:
Posted by SteveI on 28/02/2018 22:44:23:

Just a quick comment -- CBN doesn't need to be expensive. After a tip off from a friend I have been using new old stock from ebay sellers from ex Soviet Union locations, a cost effective source of CBN. I have a number of Ø125mm wheels and the costs were between US$20-30 per wheel with free post. I use them on HSS I also purchased a "1200grit" CBN low speed lapping wheel which makes no mess for keeping tools razor sharp.


Hi Steve,

Please could you give links to where you get these as I could not find them. I may well not be searching very well though. I would be interested in getting some at those prices.

Thanks, StephenS. and sellers from ukraine.

28/02/2018 22:44:23


Just a quick comment -- CBN doesn't need to be expensive. After a tip off from a friend I have been using new old stock from ebay sellers from ex Soviet Union locations, a cost effective source of CBN. I have a number of Ø125mm wheels and the costs were between US$20-30 per wheel with free post. I use them on HSS I also purchased a "1200grit" CBN low speed lapping wheel which makes no mess for keeping tools razor sharp. For Carbide I use Diamond from the typical hobby suppliers, none of which are cost effective for CBN. I whole heartily recommend CBN for HSS, it does a wonderful job with the minimum of mess.

I would like to get advice of which of CBN or diamond is most appropriate for stellite. Even at the prices stated I want them to last as long as practical.


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