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Member postings for Swarf, Mostly!

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

Thread: seeking number of a magazine
18/09/2017 17:49:04

Hi there, Bricky,

If you have any information regarding the articles you seek, the following web-site may help: **LINK**

Best regards,

Swarf, Mostly!

Thread: A bit of humour
18/09/2017 11:43:52

stress.jpg

Thread: Myford help required please
17/09/2017 21:22:20

Hi there, Ian,

I buy my H32 from my local agricultural engineers, in 4½ litre plastic flagons. (The ML7 lubrication system is rightly termed 'total loss'!)

H32 is the same stuff that farmers use in the hydraulic gizmos they bolt on to the back end of their tractors and farmers don't believe in paying over the odds for anything, they can't afford to! So your local agricultural engineers' price, pro rata, ought easily to beat the ebay price for ½ litre tins plus carriage.

Try a browse through your Yellow Pages and go face-to-face if there's an AE locally.

Best regards,

Swarf, Mostly!

Edited By Swarf, Mostly! on 17/09/2017 21:23:30

Thread: A most unusual metal
17/09/2017 14:18:29

Phil,

Ian said that he's soldered to it - I don't think you can soft solder Zamac.

A possibility that occurs to me is that the two halves of the housing have been electro-formed rather than cast.

Best regards,

Swarf, Mostly!

Thread: Myford raising blocks
16/09/2017 09:41:43
Posted by Michael-w on 16/09/2017 09:04:55:

Is it just me or does that leadscrew appear to be bending?

It appears that way because the camera is close to the subject. It would be reduced by moving the camera further away.

I think, theoretically speaking, that the apparent curvature would be zero if the camera were removed to infinity but the appearance of curvature is probably negligible at a range of, say, 100 metres or so.

wink wink wink wink wink wink

Best regards,

Swarf, Mostly!

Thread: turner walker pillar drill
02/09/2017 19:35:56

Hi there, Peter,

If your pillar drill has a 2850-ish RPM motor (i.e. 2-pole), you could look for a 1425-ish RPM motor (i.e. 4-pole) with the same mounting interface (and spindle diameter). That would halve your basic set of speeds.

Best regards,

Swarf, Mostly!

Thread: Myford 2 MT Collets.
30/08/2017 20:11:24

Hi there, Andrew,

You have part-sets of two distinct types of collet.

While I have met threaded collets which require a draw-bar, I am not familiar with any from the Myford stable.

The other components you describe go with the Myford patent 2 Morse taper system. I don't have a photo to hand but there are lots illustrating the listings on eBay. Alternatively, the Myford patent system is shown in the Myford sales literature and (probably) in Sparey's book or the 'Myford ML7 Lathe Handbook' by Ian Bradley (see pages 73 & 74). The collet (#1031) is pushed into the 'closing tube' which compresses it so that the groove round the outer end of the collet will enter the knurled nose-piece (#1438). The collet is then pushed out of the closing tube using the ejector device and expands, engaging the groove with the nose-piece. The collet is then entered into the lathe mandrel taper and the nose-piece screwed on to the mandrel nose to close the collet on to the work-piece.

Best regards,

Swarf, Mostly!

P.S.: Ian obviously types faster than I do!  Maybe my description will make more sense read with the photos to which Ian linked.

S.M!
 

Edited By Swarf, Mostly! on 30/08/2017 20:13:40

Edited By Swarf, Mostly! on 30/08/2017 20:15:25

Thread: Lathe Cleaning
27/08/2017 14:43:00

Hi there, Mick,

I use paraffin - I get it from my local garden centre. The Myford ML7 'total loss' lubrication system ensures that the lathe soon has enough of an oily film to preclude rusting.

Off topic: I buy my 32 grade lubricating oil (OK, I know it's really a hydraulic oil) in 4.5 litre flagons from my local agricultural engineers (not to be confused with the garden centre).

I recently started laying a piece of oil-absorbing paper mat in the swarf tray. (They were on offer from MSC) It's going to be an experiment of some considerable duration - I had to buy a pack of 100! The mat does absorb the oil but spiky swarf gets stuck to it before it's oily enough to be discarded.

Best regards,

Swarf, Mostly!

Thread: What Did You Do Today (2017)
26/08/2017 17:50:46
Posted by roy entwistle on 26/08/2017 15:16:28:

Swarf Mostly. Farrier and Blacksmith. Two entirely different trades

Hi there, Roy,

They can't have been all that different - here's his post demob career:

Post-Military Life.

Occupation:

1891, Shoeing smith (Census),
1896, Blacksmith (Marriage Certificate)
1901, Blacksmith (Census),
1910, Blacksmith Journeyman (Death Certificate).

Family tradition has it that he made the weather vane on the Hampton Water Works.

Best regards,

Swarf, Mostly!

26/08/2017 13:50:27
Posted by Michael-w on 26/08/2017 12:44:46:
Posted by duncan webster on 26/08/2017 00:02:38:

I earned my living in engineering for a long long time, encompassing industries as varied as steam turbines and nuclear decommissioning. I've never come across any company which employed a blacksmith

The U.K army seem to have them, albeit described slightly differently: **LINK**

Michael W

Edited By Michael-w on 26/08/2017 12:46:34

When my Grandfather was discharged from the Army (in 1888 and on medical grounds) his rank was 'Farrier Sergeant' but then he was in the 5th Irish Lancers.

Best regards,

Swarf, Mostly!

Thread: ML7 centre height?
24/08/2017 16:26:14

Howard,

I made my measurement with the bar held in a Myford Patent 2MT collet. That gave me sufficient accuracy for what concerned me at that time. I used a scriber blade in the height gauge - if I had used a dial gauge, previously zero'd on a known block, I could have checked for any eccentricity in the bar.

Very few of the more exotic instruments in my 'Metrology Department' have been purchased new - the height gauges seem to have been previously visited by the workshop gremlin that eats scriber clamps!

Andrew,

As I wrote in my post, the scan I posted is but a small part of GHT's Figure 21.2. It is at the bottom right-hand corner of the figure.

Best regards,

Swarf, Mostly!

Edited By Swarf, Mostly! on 24/08/2017 16:27:09

24/08/2017 12:49:08

Hi there, Andrew,

Here is a drawing that I have posted before in previous threads:

scan0002.jpg

It is part of Figure 21.2 of Geo. H. Thomas' book, 'The Model Engineer's Workshop Manual', page 240 in my copy, 1st edition. (sorry about the big white space at the bottom of the scan - I ought to have cropped it!)

GHT recommended that lathe owners (well, he actually said 'ML7 owners' but ... ) should measure their own machine and make a customised version of the drawing for their own lathe.

I measured mine by mounting a precision ground bar in a collet and measuring with a height gauge from the lathe bed to the upper surface of the bar, then subtracting half the diameter of the bar.

My measurement was 3.497", though maybe I really ought to write that 7 as a suffix.

Best regards,

Swarf, Mostly!

Thread: Bubbles in engineering combination squares!
21/08/2017 22:01:15

Hi there, again, Andrew,

As I wrote, there's quite a lot of it - I suggest that you start at page 4.

Best regards,

Swarf, Mostly!

Thread: RDG Graduated Imperial Handwheel for ML7
21/08/2017 21:30:38

Hi there, Andrew,

It would seem that someone in RDG's Catalogue proof-reading department was having a 'bad hair day'!!

The lead-screw hand-wheel for the Imperial ML7 is graduated with 125 divisions, corresponding to thou with an 8 TPI lead-screw.

The hand-wheel graduated with 160 divisions is, I believe, intended for use with the Metric ML7 which, interestingly, still uses an 8 TPI lead-screw!

(Try converting your figure of 0.00390624" to millimetres.)

Best regards,

Swarf, Mostly!

Thread: Bubbles in engineering combination squares!
21/08/2017 21:19:17

Hi there, Andrew,

Have a browse through the thread linked here, you may find it interesting.

(There's quite a lot of it! )

Best regards,

Swarf, Mostly!

Edited By Swarf, Mostly! on 21/08/2017 21:19:57

Edited By Swarf, Mostly! on 21/08/2017 21:20:30

Thread: Heavy metal
18/08/2017 13:36:32

There used to be an alloy called 'GEC Heavy Metal' (made by guess who?!) that was intended to be used for counter-weights to balance aircraft flight surfaces (elevators, ailerons & rudders). Dense was good as the counter-weights balanced at a shorter radius giving a smaller swept volume and so not needing as much space within the non-moving parts of the airframe.

I've no idea of its constitution. Perhaps Andrew knows?

Best regards,

Swarf, Mostly!

Thread: Imperial tee bolts for Myford?
15/08/2017 12:55:18
Posted by Hopper on 15/08/2017 09:30:57:

Myford.co.uk sell them. Of course you pays teh Myford price but you can't have it all ways I guess.

I think you'll find the current Myford ones are M6.

But they did list lengths of profiled steel strip - drill and tap your own holes.

Best regards,

Swarf, Mostly!

Thread: What Did You Do Today (2017)
14/08/2017 21:37:01
Posted by Neil Wyatt on 14/08/2017 20:33:30:
Posted by Swarf, Mostly! on 14/08/2017 19:28:54:

The 'Tubal Cain' whose book I cited was the late T.D.Walshaw, a Brit. The 'Tubal Cain' who makes YouTube videos, aka 'Mr. Pete', is an American.

It seems necessary to point this out every so often.

I've got nothing against his videos but I wish he'd done a bit more research before choosing his pseudonym.

Brief research into the origin of the name makes it such an obvious choice I've come to the conclusion isn't fair to criticise anyone for using it.

Neil "Stub Mandrel" © ® TM Wyatt

While I disagree with your opinion, I'd defend with my life strenuously your right to hold it.

But then your position as moderator makes you such a 'force majeure' that my statement is a bit of a vain gesture!!

Best regards,

Swarf, Mostly!

Thread: Dore small boring bars
14/08/2017 19:38:49

Hi there, Andrew,

If you go ahead with the Dore design, you'll need some of these:

imagedore gizmo 1001.jpg

imagedore gizmo 2002.jpg

I found three of these in my 'stash' some time ago while looking for something else. I posted these pix here asking if anyone recognised them but nobody did.

Best regards,

Swarf, Mostly!

Thread: What Did You Do Today (2017)
14/08/2017 19:28:54
Posted by Nige on 14/08/2017 17:08:43:

Wow, didn't realise I would set of such a train of comments! Having managed to cut a very poor thread by the 'suck it and see' method I resorted to a Tubal Cain video where he says that 29 degrees is actually the correct angle, for reasons he isn't going in to on an introductory video I guess. I'll not argue with him or you guys about that. wink

SNIP

 

Nige,

The 'Tubal Cain' whose book I cited was the late T.D.Walshaw, a Brit.  The 'Tubal Cain' who makes YouTube videos, aka 'Mr. Pete', is an American.

It seems necessary to point this out every so often.

I've got nothing against his videos but I wish he'd done a bit more research before choosing his pseudonym.

Best regards,

Swarf, Mostly!

Edited By Swarf, Mostly! on 14/08/2017 19:31:31

Edited By Swarf, Mostly! on 14/08/2017 19:32:10

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