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Member postings for Dave Halford

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

Thread: Imperial acme threaded rod
21/02/2019 11:53:03
Posted by Paul Appleton 1 on 21/02/2019 08:15:34:

Mcmaster-Carr will no longer accept orders from the UK. Try finding a LH Acme 5/8x10 tpi leadscrew and nut in Europe!! The old Colchester lathe I have originally has a 5/8x5 TPI thread on the crosslide. This is not even mentioned in most data books. By replacing with a 10TPI I would have had a direct read dial. Wow! how 'modern' is that?

Kingston Engineering can supply 5/8x 8 LH acme screw and nut 'off the shelf' for around £50 total. But of course I then have to make a new indexing dial.

I realise that the auto feed rates would be affected by doing a conversion, but thats not really a biggy for me.

BR, Paul

 

Paul, Whats wrong with using HPC? https://www.hpcgears.com/pdf_c33/2.8-2.9.pdf

 

Edited By Dave Halford on 21/02/2019 11:53:34

Thread: Pensions
21/02/2019 11:44:31

Drawdown might be your answer

Thread: Lead Screws
19/02/2019 14:41:10

You will have to joint the new thread to the old 'front end'

HPC also do lead screw

Thread: Lathe Identification
17/02/2019 22:55:09
Posted by Mick Henshall on 17/02/2019 09:04:42:

If you need some inspiration watch on YT chap called " Burton's Attic " refurbishing a Rockwell lathe, cracking job

Mick 🇬🇧

Refurbishing is a touch strong, he's removing rust and repainting basically a good machine that he steam cleaned and left to rust for a bit.

90% of the original paint is still there so it's not had much use

Thread: Boxford machinery auction
14/02/2019 17:08:01
Posted by Barrie Lever on 14/02/2019 15:54:31:

Tony

I agree.

When Brexit happens, we are going to step through a door and we don't know what is on the other side, there might be an abyss but equally there might be very green fields.

Boxford and others have not pushed an agenda hard enough with government on training machines for schools and colleges, I have heard from someone in the know that indirectly a number of the smaller German machine tool manufacturers are kept afloat by these government education supply contracts.

Regards Barrie

It's a bit like when we voted to join because it sounded good, then surprise! we have to charge our Commonwealth countries large tariffs on their goods so we buy EU instead and shaft the whole Commonwealth.

They can't, schools are still set up for A levels and Uni to feed the service economy brave new world where everyone should have a degree First you need to bring back the need for vocational subjects and given we have a government that is capable of giving a ferry contract to a company without ships don't hold your breath.

Thread: New coffee maker - disgusting taste!
13/02/2019 22:49:46
Posted by Clive Foster on 13/02/2019 18:09:30:

Time to get a Teasmade. Bound to be one in an attic near you.

Clive

And everyone of them has a dead clock :O)

Thread: Unused Xmas Gift
04/02/2019 18:11:17

Any insert will chip if you stall or stop the machine in a cut.

It's not down to cost unless you run a machining center, your hobby machine hasn't the power to make the difference noticeable.

I tried a very cheap set of 12mm CCMT tools, came with 10 inserts and tried a destruction test with the boring bar on a 9 3/4" wheel rim running on a 10" lathe. I got chips coming off as sparks which the coating stood up to for 10 minutes before the varidrive belt slipped and chipped the tool.

Edited By Dave Halford on 04/02/2019 19:02:29

Thread: Is it a drone?
04/02/2019 11:49:43

One wonders if he had a moment of trying to fly the wrong 'bird'.

Thread: Testing for isolation
04/02/2019 11:35:17
Posted by Martin Harris 9 on 03/02/2019 10:41:28:
Posted by peak4 on 02/02/2019 16:16:57:

Anyone who's worked on live telephone stuff will be able to relate to a belt from ringing current. From memory, about 70v but @ 17Hz in the UK, and you don't half know when you've been shocked.

Telex was even nastier - plus and minus 80V DC gave the potential for 160V and that definitely made you jump! The main hazard while working on distribution racks was the legendary "tag rash" - you would get a belt from an exposed tag and jerk your hand away from it, scraping the back of your hand across the exposed tags on the next block - a leather "half glove" was often worn to protect the back of the hand...

The joy of tag rash, plain 'local battery' was bad enough never mind ringing. That was one of the reasons I went to a repeater station instead of an exchange till one day I was jumpering (wiring) channel equipment to a TJF (very low power) and got a big flash, so smart arse thought he would see how long a spark he could draw - 1/4" later the tip of my best pliers melted.

Thread: Noise from lathe drive
01/02/2019 19:39:51

Niels, You might find the noise is caused by the sheet steel rear splashback drumming, it's quite a big sounding board.

That said I have just swapped out a 1980's 1/2hp 4.5A 1480rpm Brooke Crompton English motor for a modern 1hp 4.8A 1480rpm Belgian Javac EFF2 efficiency on my lathe and the noise level is greatly reduced along with the current. So the problem still could be a noisy motor.

Thread: Milling on the Chester Craftsman
31/01/2019 17:48:39
Posted by Adrian Revill on 31/01/2019 17:29:00:

I have looked at the Boxford and liked them, a little puzzled what all the AUD, BUD, CUD mean.

I can put it in the garage and then take my time moving it into the work shop.

A means quickchange + power everything

B means change wheels + power apron

C means plain lathe only and really cheap

U means underdrive so it comes with a cabinet so you can't store much beneath it.

I would advise against burning the guarantee leaving it in the garage unused, a few weeks can soon turn into months, quite a few need to be returned.

Thread: Tinhat warrior trademark.
31/01/2019 14:34:03

looks like a 2005 casting mark so not too shabby on lifespan

Thread: Centec question
31/01/2019 10:20:54
Posted by peak4 on 30/01/2019 19:04:26:

Garry, I'd forgotten I was a member, there's also a Yahoo Group for the Centec with a few files on there as well

Bill

Good luck with that, nothing posted since last summer and you cant add new posts, I think the moderator is asleep.

Thread: Filing A Curve
28/01/2019 20:22:27
Posted by Howard Lewis on 28/01/2019 16:24:01:

My woodwork master taught us to lay a plane on its side, whether metal or wooden, so that the blade was not damaged, as it could be if placed with the blade downwards.

Howard

Exactly right. otherwise you have to sharpen it more often.

Thread: Small lathe steadies
28/01/2019 17:18:59

?? Two on Ebay right now. Nowhere near £100.

Kits are usually raw castings

Thread: Guidance on selling my late fathers machinery
28/01/2019 17:13:23

Watch ebay for a week or two, include sold items in your advanced searches. Ignore any silly 'buy it now' inflated prices, some of those sit for six months before reality takes over.

Only the Elliot will be hard to find.

Thread: 3-in-1 Metalworking Machines
28/01/2019 17:00:51

They will roll 3mm steel if only 3" wide smiley

Thread: Milling slide for sale
28/01/2019 16:57:07
Posted by not done it yet on 28/01/2019 15:24:52:

Just the right size for a fymord?smiley

Super Adept more like.

Thread: Super glue filler
26/01/2019 17:53:20
Posted by Vic on 25/01/2019 23:40:45:
Posted by Chris Trice on 25/01/2019 14:49:53:

Microballoons is a fairly broad term and not exclusively phenolic resin. Most of the ones you encounter used for balsa aircraft (because of their inherent lightness) are usually white. https://www.christinedemerchant.com/filler-micro-balloons.html

It was many years ago but I’m pretty sure the hollow glass spheres were sold to me as micro balloons.

Agreed,not to be confused with bead blasting glass spheres which are somewhat more heavy duty.

Thread: Colin Chapman - Great Lives, 4:30 today
16/01/2019 16:34:51

Lovely man Colin, driver safety came in at around 9999 in his top 100.

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