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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: What Did You Do Today (2017)
05/05/2017 12:03:47

Thanks to those who responded with further tips about welding helmets.

03/05/2017 16:16:43
Posted by Douglas Johnston on 30/04/2017 20:00:57:

These helmets might well be fine, but you only get one pair of eyes to experiment with. There have been horror stories about other cheap items in the past so I would hesitate to use a cheap item which could have possible bad outcomes.

Doug

Safety is, of course, paramount but I am (at least prospectively) with richardandtracy on the merit of a cheap and cheerful automatic helmet for the occasional welder. Any helmet should be checked for function before use.

I have owned several helmets ranging from the very basic to the seemingly expensive ESAB Eye Tech variety. I have had two of the latter and both have died over time. The advice elsewhere is to try replacing the batteries and I have spent part of the day setting up my small router table to cut round and open up the sealed cartridge case only to find that the electronics are encapsulated and beyond my ability to do anything with them.

Looking around it seems that helmets at the price Richard mentions are not automatic and perhaps he would give some more information.

Best of all, has anyone a recommendation for an automatic helmet that will see me out?

Thread: Unrecognized gauge marked "PERLES"
02/05/2017 17:39:56

Martin Connelly:

Thanks. I see that according to winterson.co.uk:

"The famous Baroda Pearl Carpet, sold at auction by Sotheby's in 2009 for $5.5m, was covered with around 1.4 million seed pearls, all drilled by hand and sewn decoratively onto the fabric."

02/05/2017 09:23:58

Pearls,etc it is!

Thanks to those who identified my gauge; interesting that beads, pearls and stones (diamonds) are apparently measured in the same way and difficult to see what use or ornament a no 1 pearl would be.

John Flack: I was aware of the French word which, on checking, I see also means bead and howler.

The absence of a maker's name suggests that it may be shop-made.

01/05/2017 14:23:22

Does anyone recognize this?

dscn1339.jpg

It was given me by a (now deceased) friend with an interest in clocks. As an indication of size beyond the rule, the no 3 hole is about 0.040".

I don't think it is a gauge for measuring pearls!

Thread: Asking Questions on the Forum
01/05/2017 13:55:03

Neil Wyatt:

Thank you for this timely and excellent advice.

It may be worth pointing out that Adblock users may not be able to see the search box.

Thread: Perfecto Shaper
28/04/2017 09:33:56

Barry Taylor 3:

Thanks for your comments.

I'm a complete novice in this area, having done no more than take a few trial cuts before starting to overhaul the machine. However, the tee slots on the Perfecto are at right angles to the ram travel which seemed to make your suggestion difficult (although it may yet be possible for the machine to true up its own table).

My understanding is that "proper" shapers like the Alba are in a different category but I will certainly bear in mind your point about walking. Like most amateurs I have a restricted work space and I had hoped to make the shaper semi-portable. The Perfecto is essentially a bench machine although I know some users have contrived stands.

27/04/2017 12:31:56

Benny Avelin:

The lathe is the small Willson slant bed; see lathes.co.uk for details of the large one!

You seem to be doing great things on your own equipment.

27/04/2017 12:04:25

My experience of overhauling my shaper may be of interest to the select band of users; I see from MEW 246 pp 14 and 15 that Mike Haughton is also one.

I was not surprised to find my machine needed attention in a number of areas - not quite Perfecto!

I noticed straightaway that the tee slots in the table needed re-machining but could not immediately see how to mount the table on my small mill. The photos show how I eventually solved this problem:

dscn1327.jpg

dscn1328.jpg

This necessitated first milling the front and bottom edges of the table parallel and tapping two holes in the front edge, alterations which I thought were acceptable.

The other major problem was that the saddle became progressively stiffer as it was moved by the handwheel from right to left; dismantling and measuring revealed that the leadscrew bearings were badly out of alignment. This was cured by installing an eccentric bush at the left end as shown:

dscn1322.jpg

Here is how the bed was set up on the cross slide of the lathe for opening out the hole for the bush and machining the necessary facing:

dscn1314.jpg

The machine's own table came in handy for this job.

I now plan to build a stand and would be interested in some further details of Mike Haughton's version which as shown in his article has a rather elegant curve to match the radius of the base.

Thread: This came with Myford ML7 - anyone tell me about it?
26/04/2017 11:14:08
Posted by Hopper on 26/04/2017 10:08:52:

Do you suppose it woiuld be possible to make one of these gearboxes from scratch, but using Delrin for the gears instead of steel or CI, just to cut down on the machining time and cutter wear? Would the Delrin wear well enough to be a permanent solution?

As you probably know, the Sparey design envisaged the use of standard Myford gears oil-lubricated, most if not all only 5/16" wide. I am no expert but if using plastics feel that a wider gear would be both stronger and wear better. I have successfully cut and used gears in Nylatron.

Presumably, the case casting is no longer available and it would have to be fabricated.

Ady1:

Would T6 gears run well together? I assume your ali gear is working with a CI gear.

26/04/2017 09:58:18

Ady1:

Thank you for this encouraging information; I had in mind the "urban myth" that few, if any, Quorn tool and cutter grinders were ever actually constructed!

Interesting that many modern hobby lathes are marketed without gearboxes (I realize that affordable CNC makes this unnecessary).

26/04/2017 09:14:59

Paul Gander:

I will scan the two articles and email them to you. It looks from Ady 1's post and yours that at least two of these were made.

I had forgotten that LHS edited The Model Mechanic and wonder what, if any, was the relationship with other like publications of the 1950s.

25/04/2017 18:14:14

Robbo:

I have just turned up the two issues of The Model Mechanic in which Sparey described his gearbox.

Paul is welcome to contact me if he is interested in seeing these.

Thread: Ticket Clippers??
24/04/2017 09:42:15
Posted by Neil Wyatt on 24/04/2017 08:35:34:

For the record, a proper ticket punch makes a hole, not a notch.

They were invented by the Victorians for a job creation scheme, giving employment to street urchins who would sweep the chads off the floor of coaches etc. at the end of the day.

Neil

I suppose they didn't want the chads hanging around?

23/04/2017 21:16:55

These seem very similar:

dscn1334.jpg

Thread: What Did You Do Today (2017)
23/04/2017 18:53:17

I was inspired by Darren Conway's setup for balancing a pulley in MEW 254 to check the balance of my CBN wheel. I was surprised when I bought it described as balanced to see how many holes had been drilled to achieve this. Here's a picture of my own setup showing the wheel actually settled at the point of the drillings:

dscn1332.jpg

And here's the result of adding 5 gms of Blutack to the opposite side:

dscn1333.jpg

Now to calculate the size of hole apparently needed!

Edited By ega on 23/04/2017 18:54:28

Thread: Lathe chuck removal
22/04/2017 10:57:32

Mike Poole:

Points taken; the link on lathes.co.uk relates to a South Bend lathe where the tool grips the spindle rather than anything keyed to it.

21/04/2017 17:11:42
Posted by Niels Abildgaard on 17/04/2017 07:18:07:

If Chuck is really stuck this helps

**LINK**

There are to many broken back gears out there.

Thanks for this link to a useful-looking tool.

I don't recall Tony Griffiths' website article on this subject being mentioned here - I only chanced on it myself just now - but it is well worth reading and contains a link to a similar tool.

Tony doesn't mention Sparey but he does sell his book!

Thread: Sudden Radio Adverts on my computer?
20/04/2017 10:19:30

Martin King 2:

We are all on the road to Domestos!

Thread: Boring copper tube problems
19/04/2017 22:45:23

Rotabroach?

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