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Member postings for ega

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

Thread: Myford Super 7 Top Slide Base - Alternatives?
08/10/2019 15:37:53

MichaelG:

You are correct; I assume the reason is to achieve a greater wedging effect.

The design is something of a compromise and I think the "lowly" version has the advantage of better clamping.

Edited By ega on 08/10/2019 15:38:41

08/10/2019 14:50:52
Posted by Hillclimber on 08/10/2019 14:07:00:
Posted by Adrian 2 on 26/06/2019 10:24:20:

I wonder why it has cracked ? Are the thrust pads present and correctly installed in their respective holes? They are handed and easy to fit incorrectly.

Adrian.

Reopening this old thread, I finally realised the significance of Adrian's comment about the thrust pads being handed. Yesterday I was scanning a parts list and found that the right and left pads have different part numbers. Today I was cleaning and adjusting my cross slide.

I had noted that despite my caution in nipping up the pads on the topslide, there were new, uncomfortable marks where why former topslide base casting had broken (like Nicholas's). So I pulled out the pads and sat them on the casting, where they also looked uncomfortable - flipping them around, they looked more naturally poised.

It is difficult to describe the geometry of the respective surfaces, and I have no idea how to tell the pads apart visually. But knowing that they are different, and checking for natural 'poise', I'm hoping this is the solution...

Cheers, Colin

I have found it possible to tell one from the other by feel. They could be marked in some way. Of course, none of this will be easy if the wrong-way-round pads can't be removed from their bores!

BTW, isn't the Gibraltar toolpost secured in the same way and therefore rotatable, too? (Your earlier post refers).

Thread: Creating Heat for Hardening
08/10/2019 10:55:41

Don't forget the magnet test.

Thread: Grinding wheel 'washers'
07/10/2019 23:44:35

Unless your flanges are rustproof I suggest you make the blotters from something that won't harbour moisture.

Thread: Dore Westbury Boring/ Facing Head instructions?
07/10/2019 14:43:23

In the earlier photos there was no cutter in place so for the purpose of the photos below I have just picked one out at random and installed it. The bar and cutter are entirely straightforward and made to GHT's words and music.

dscn1645.jpg

dscn1646.jpg

BTW, I am not sure that ETW had anything to do with this; the DW mill was, of course, a development of ETW's work and something of an ME milestone.

Thread: Evolution of a 4 Tool Turret
06/10/2019 22:45:58
Posted by Graham Meek on 06/10/2019 20:35:12:
Yet these turrets worked faultlessly for many thousands of operations, maybe millions?

No wonder GHT called them "splendid"!

Thread: Any geologists out there?
06/10/2019 17:30:03
Posted by Robin Graham on 06/10/2019 00:51:30:

Last week I took a recuperative break in Lyme Regis. Well known for it's unusual geology of course. Wandering on the beach I came across stuff like this:

img_2081.jpg

I forgot to put a ruler next to it, but for scale the biggest hole is about 15mm.The 'stone' is quite soft and may be compressed mud - but how were the holes formed? Googling has so far failed me.

Robin

Have they finished "stabilising" the town?

Thread: Saw doctor
06/10/2019 17:28:00

Axminster Power Tools sell some fancy dovetail saws and might help you.

I agree that it would be useful to know if any saw doctors survive. I used to sharpen and set my own but, like you, am not now confident of doing so.

I now tend to reach for a Japanese pull-saw whose blade can, of course, be replaced when blunt.

Edited By ega on 06/10/2019 17:28:25

Thread: Dore Westbury Boring/ Facing Head instructions?
06/10/2019 17:20:16

Thanks for the helpful photos of the advancing bracket. The GHT mods can be seen here:

dscn1643.jpg

and here:

dscn1644.jpg

He was perhaps a little hard on the Dore design and, justifiably, proud of his own precision boring head. Arnold Throp's idea was to produce a slide that could be made without milling facilities and the kit came with the bronze casting already screw-cut for the lathe spindle.

Thread: Evolution of a 4 Tool Turret
06/10/2019 16:47:15

Graham Meek:

Many thanks for the explanation - no doubt I was a little dense to begin with!

Is "manual control" still available for intermediate settings? My turret is normally loaded with four indexable holders and intermediate positions are not normally needed unless the topslide is set round.

Rod Renshaw:

I understand that "urge" is part of the standard vocabulary of technical writers.

06/10/2019 14:39:13

Interesting to me as I am a long-term, happy user of a GHT turret.

I admit that, having read this post and turned up GHT's description, I am not sure about the difference between "self-indexing" and the GHT "simple ratchet" design. Is it simply that with self-indexing moving the locking lever moves the turret as well?

I would certainly welcome a write-up of the adaptation.

Thread: Dore Westbury Boring/ Facing Head instructions?
04/10/2019 22:51:59

GHT wrote up his modifications for the Dore BFH in ME (reprinted in his Workshop Manual).

Thread: New tool post for my lathe
04/10/2019 11:08:26
Posted by Neil Wyatt on 03/10/2019 22:35:29:

As a special treat for subscribers, I have created an article around David Lammas' article from 1995, as previously republished in the 25 Years Special, which is now long out of print.

www.model-engineer.co.uk/news/article/three-way-toolpost-by-david-lammas

Note this is subscriber-only content, so you will need to have a valid subscriber number for ME or MEW to view it.

Neil

Neil

Thanks for reviving this. One of your captions made me wonder whether you have started using Dragon Dictate:

"This version is loaded with asset of tools for right hand cutting"

Thread: Turning between centres on Super 7
01/10/2019 11:38:31
Posted by Mike Poole on 01/10/2019 10:01:04:

**LINK**

I think this may be an hydraulic version but it shows a decent turning cut. They are quite expensive for a commercial item but a shop made version could be made.

Mike

Pursuing my "sprung" query, it seems from the YouTube comments that this one is not spring-loaded. No doubt the significant heat generated is dissipated in the chips/sparks!

01/10/2019 09:46:08
Posted by Mike Poole on 01/10/2019 08:32:24:

The chisels are spring loaded and do mark the end face where they bite into the job, sometimes you see the little marks left on the end of a component. They are often used for grinding but they are also used for turning. There are videos on YouTube.

Mike

Is the centre also sprung so as to take care of the work expanding?

And is there a hobby market for these commercial devices?

Thread: x3 mill spares
30/09/2019 23:40:54

An additional supplier link:

solenttools.co.uk

They recently supplied a pair of brushes for my old Wolf Grinderette angle grinder.

This machine is over forty years old and I was impressed to find that they were able to supply against the type number of the machine. They also undertake to make brushes.

Thread: Myford ML10 spindle crank trouble
30/09/2019 11:06:47
Posted by Brian Wood on 30/09/2019 09:37:57:

There could still be a problem with the space needed to get a pukka translation gear of 127 teeth in place on the leadscrew, it is only a shade under 6.5 inches in diameter.

Brian.

Martin Cleeve got round this problem by using a 127 of 30DP: see page 44 of WPS3.

Thread: Perfecto 3-1/2" x 16" lathe half nut lever operation
30/09/2019 10:59:57

A detent would seem to imply a fixed position of the engaged halfnuts ie no adjustment. Later Myfords have a limit screw to prevent overtight adjustment.

Thread: Whitesmiths Shop
30/09/2019 10:56:52
Posted by vintage engineer on 29/09/2019 21:56:17:

Yes as a retired blacksmith I once had a long discussion with a black gentleman as why I wasn't a whitesmith! Whitesmiths work with"white" metals, eg, tin, zinc, pewter. and lead.

Was he from Rhodesia, by chance?

Thread: windoze 10
29/09/2019 09:54:48
Posted by Bandersnatch on 29/09/2019 01:40:19:
Posted by ega on 28/09/2019 23:36:28:

Interesting point re auto-update; can you give chapter and verse?



Not exactly since I didn't keep the KB references - I just declined the update and moved on - but:

I never let Windows Update do its thing automatically. I check what each update is going to do to my system and then decide whether to install it (very interesting sometimes and not just in this context).

On at least two occasions this year, a so called "important update" (used to be called "critical" .... important to whom?) when checked, amounted to an auto update to Windows-10. Same thing has happened at least once on my Windows-8 installation.

Some related info here.

Thanks for the interesting linked article. I couldn't see any dates in this and wonder if it applied only during the period that a free Win 10 upgrade was available; this has now ended but an upgrade is apparently still possible (for those that want it) via the media creation site that I mentioned.

MS would obviously like all Windows installations to be Win 10.

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