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Member postings for Nick Hulme

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

Thread: Myford Super 7 with 'Big Bore Conversion'
07/04/2020 14:09:57
Posted by Mike Poole on 06/04/2020 23:03:41:

I doubt it would be practical to build a big bore headstock from parts, it would be a long and expensive shopping list. It would make more sense to part exchange your current machine for a big bore I would think.

Mike

That's what Roy Milner did, with most of the parts being taken from the headstock being converted, no new gears or pulleys were used.

05/04/2020 14:23:10
Posted by John Haine on 05/04/2020 14:08:49:

why on earth they didn't just make it ER40 in the first place I don't know.

John Stevenson suggested a native ER40 headstock would be the best option for the Super 7, I think Myford were just making a point of ignoring him and common sense by finally employing the MT3 design which one of their employees had come up with in the 1960s or 1970s.
Perhaps the "New Myford" will go with ER40 sometime in the middle of this century!

Edited By Nick Hulme on 05/04/2020 14:23:42

05/04/2020 13:43:55
Posted by Paul Smith 37 on 03/04/2020 23:10:21:

NIck..Did you strip your headstock and have you any details and bearing numbers? Ive contacted Roy Milner and hes not making any more big bore headstocks.

So i may attempt it myself with a bit of help.

Thanks Pauly

Pauly,
I haven't needed to strip it yet and it's used every day for production work at the moment, I currently have a rush of orders owing to people being at home with nothing to do but fit upgrade parts to their projects.
When I get around to stripping it I will put all the dimensions into CAD and I have an idea or two for improvement when I convert my spare head,
Regards,
Nick

Thread: New chinese lathe or old Myford lathe
16/03/2020 09:52:13

If you can find a reasonably priced one then a Myford S7 in good condition might serve you well, if you can live with the lamentable headstock through capacity. 25 years ago I paid £700 for a 1964 Super 7 which is still turning out precision work.
The problem is that for what people seem to think is a reasonable price for a second hand S7 you can now usually buy something just as good and newer from a reputable UK based supplier.

Thread: Annealing stainless steel
15/03/2020 19:48:03

Stainless has nothing to do with this sad story.
The cheerful purchase of Mystery Metal because it is seen as cheap is the story here.
If you buy known materials you can look up heat treatment and cutting speeds, this saves you looking like the chump who has bought Scrapbinium cheaply and now cannot do anything with it.

Thread: Indexable Carbide Turning tools
15/03/2020 19:40:32
Posted by Neil Wyatt on 14/03/2020 17:38:50:

The ideal depth of cut is about 0.6 times the tip radius.

If you are the sort of person who likes to make shallow finishing cuts I suggest CCGT inserts with a small tip radius.

Neil

How does that jibe with a single step 30mm to 25mm reduction in 303 on my S7?

Thread: Amadeal Lathe failed - customer service appalling!
14/03/2020 10:41:18
Posted by Robert Atkinson 2 on 09/03/2020 14:28:53:

Regardless of any T&C's or guarantee, an item sold in the UK must be fit for purpose and suitable quality. Limiting the guarantee on elecrical components to 6 month's is unreasonable. most electronic components do not wear out and should last much longer than a year.

Robert G8RPI.

An accurate but pointless argument as there will always be unscrupulous sellers taking advantage of the culpably unwise people seeking unreasonably cheap products by sourcing cheaply and supporting inadequately, the fact that the customer has recourse in law will not change the fact that their money spends significant time invested in scrap as a direct result of them being cheap in the first place.
Why do so many people act all surprised when, having scraped the bottom of the barrel and found one of the cheapest box-shipping options to buy, they get cheaply assembled products and less than stellar service?

Thread: Toolpost question
14/03/2020 10:27:45

I looked at Multi-Fix and found that almost none of the angles I wanted to set tools at were catered for by the 9 degree increments.

Thread: Bore Measuring Gauge
12/03/2020 16:07:52

That kind of Metrology is available to rent.

Thread: Mag Base
05/03/2020 19:09:51

Were "Keepers" as provided by magnet manufacturers in the past to "Keep" the field localised or to "Keep" the magnet's strength? :D

Thread: Best Cutter for HDPE.
04/03/2020 21:24:24

YG Alu Power are good in plastics.

Thread: Holding block for ISO 30 shank
04/03/2020 15:31:03

How complex is the turning you want to achieve?
I've done some turning in the mill with turning tools held in a milling vice.

Thread: metric thread on my imperial lathe
29/02/2020 12:01:45
Posted by not done it yet on 25/04/2017 16:54:42:

Whatever you do, do not open the lead-screw half-nuts under any circumstances between passes.

While good advice for a beginner, that is not entirely true. There are several vids on utoob which clearly demonstrate that the half buts can be opened - but must be closed again before reversing beyond the end of the cut.

Unnecessary for braked lathes or where plenty of undercut is available after the thread, but useful for instances where things are 'limited' in some way.

Cut away from the shoulder and outwards from the bottom of a bore and these issues are non-issues.
From personal experience, and not from watching YouTube videos, it's easier not to open the half nuts when cutting Metric threads on an Imperial lathe wink

Thread: Parkside (Lidl) Cordless Angle Grinder
21/02/2020 10:30:17
Posted by Robert Atkinson 2 on 20/02/2020 18:16:33:

I stand by what I said, please don't edit what I said to suit your case.
While guidance is that there will normally not be any action without intent, the lettter of the law does not require it. The law (Theft act 1968) also says that possesion of an item made or adapted for burglary or theft is considered intent on it's own. Obviously the case of one in your car depends on you being in or near the car and not at home.
The point of the wording of this law is that it's does not need proof of intent, if it did it would be too hard to enforce. It's basically up to you to show reasonable cause for having the item.
Hopefully it is applied with reason, but you could end up on the wrong side. Try not to fail the "attitude test" for startrers. Finally it's not the police who decide what is an offence or who is guilty.

Robert G8RPI.

Complete and utter bunk, if you have no previous and are of good character you need have no fear in carrying anything which isn't illegal in itself, no one will be interested.

Thread: 3D Scanning, Anyone?
09/02/2020 21:32:30

Is anyone using a 3D scanner to capture parts for 3D printing projects?

Thread: Linked belt for Myford 7
08/02/2020 08:23:22

I've tried various linked belts and all of them require greater tension than a conventional belt to transmit the same power on my Super 7, fine for industrial machinery but possibly not optimal for the long term health of the plain bearings on a Myford.
I do regularly make use of the full 1hp available to me though so anyone performing only light work may never have any issues.

Thread: Myford S7 long bed
03/02/2020 14:20:16
Posted by ega on 03/02/2020 12:19:54:
Posted by Nigel McBurney 1 on 03/02/2020 09:31:48:

... Small lathes do not need power cross feeds,its a fad rather than an essential,learn to twiddell the feed handle at a constant rate.

I tend to agree with this but isn't one of the advantages of hand feed that the rate can be varied eg as in facing to centre?

Better still is a VFD to increase the rpm as the cut radius decreases, with a little ingenuity an easily built linkage can be produced to actuate a speed varying potentiometer.

02/02/2020 17:09:52

Anyone who hasn't owned and used a Long Bed might think it's just a longer version of the same thing but they'd be dead wrong, the Long Bed is a much deeper and far more rigid casting, I don't have any of the rigidity issues which are generally talked about in conjunction with Myford 7 series lathes, parting 30mm stainless is a breeze.

Thread: Health Risks with Filament Printing
27/01/2020 23:41:14

The only reason you might not know this already is if you were not interested enough to read around the subject in the first place, this is not news, I was reading warnings about ventilation 4 years ago when I first researched 3D printing.

Thread: Stepper motor and driver supplier recomendations
27/01/2020 23:29:11

+1 for Zapp Automation, excellent supplier.

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