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Member postings for S.D.L.

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

Thread: Threading 1/8 stainless steel
01/05/2019 11:52:24
Posted by Eric Cox on 01/05/2019 10:14:14:

The die is mounted in a die holder in the tail stock.

plan of attack is,

clean with acetone

open die fully

use aluminium block

plenty of Rocol

pray

Check how central the die is in the tailstock die holder. Some have large clearance bores for the dies to be split open and when used push the die up to .75mm (20thou) off centre which is a lot on basically a 3mm thread.

If this is a problem add 3 tapped holes to die holder at 90 degree intervals so that die can be centered , can then be closed up using two side screws.

Steve

01/05/2019 08:18:04
Posted by Eric Cox on 30/04/2019 16:04:52:

I'm trying to cut a 5BA thread on 1/8" stainless steel rod held in the 3jaw lathe chuck. The die starts to cut then the rod slips in the chuck marking the rod. Would I be better off using a 1/8 c0llet chuck.

Better with a collet, Degrease material with Acetone or IPA to improve grip.

How are you holding the die?

You could take a couple of thou off diameter

Steve

Thread: Dovetail cutter
15/04/2019 14:41:33
Posted by JasonB on 15/04/2019 13:35:19:
Posted by Peter F on 14/04/2019 23:20:41:

Sherwood I've found to be some of the best cutting tools available,

Just worth pointing out that Sherwood tools come from a forest in China and have never been anywhere near Nottingham, but nice to know that you find the far east product one of the bestyes

Not always, I bought a load of Carbide endmills (about 20) when they were on offer in ther flyer leaflet and they all cane in a box direct from sandvik with a delivery note with me as the drop adress.

Steve

Thread: Mini boring tool
30/03/2019 20:53:21
Posted by Douglas Johnston on 30/03/2019 19:04:00:

Seems to be only available to companies when I looked. I suppose I could try to invent a company to fill in their form but I'm sure they would show me the door.

Doug

You dont nned to be a company they will sell to anyone paying.

Even my wife has an account for getting me Christmas and Birthday presents sometimes.

Just ring up and say if you want to buy something

Its the same with MSC

Steve

30/03/2019 18:43:13
Posted by Plasma on 30/03/2019 14:28:01:

Hi Barrie,

Yes of course. I was trying to buy a Komet insert for my threading tool holder, but Komet have been absorbed by a larger group and I believe WNT is the parent group of ceratizit.

I dealt with their office in Sheffield and had to register for an account to buy anything.

The flyer included drill sets, er 32 collects etc. So might be something there for you.

Website is www.wnt.com

Best regards Mick

The collets are very good as are the thin parting and grooving tools.

Steve

Thread: Hello, Alexander master toolmaker
21/02/2019 08:23:51
Posted by David George 1 on 21/02/2019 07:52:25:

Hi Ali Have you looked at www.lathes.co.uk I used one of these about 50 years ago very versatile but a pain to set up accurately.

David

Why were they a pain to set up.

Interested as I fancy something of that design style

Steve

Thread: One off castings
08/02/2019 18:27:09

Swan foundry in Banbury

Sand castings with Iron and all sorts of lost wax

Steve

Thread: Knurling Wheel Comparison / Supplier ?
07/02/2019 08:36:27
Posted by Steve Crow on 06/02/2019 18:44:25:
Posted by Gas_mantle. on 06/02/2019 18:29:28:

My cheapo Chinesium knurling tool gives good results for the money - only £15 with 2 sets of wheels.

dsc_0002.jpg

It looks the same as mine - I'll have to check. Price was the same anyway.

I might have just got a bad one. I've noticed this with cheap imports before. I think that quality control is so low that although most things are at least serviceable, a high percentage of shoddy goods slip through the net.

The quality control is with the customer, Thats why its cheaper.

Steve

Thread: DIY Epoxy Frame based CNC MILL
17/11/2018 22:17:07

This looks an interesting post, keep them coming as you can.

Steve

Thread: ME Shows in UK for private exhibitors
13/10/2018 15:08:10

stevePosted by Neil Wyatt on 12/10/2018 22:15:58:

Posted by S.D.L. on 12/10/2018 21:44:57:

Where is the news about no Bristol next year?

Steve

I've had a press release, there will be an official announcement in the next MEW.

They hope to run a new format show in 2020.

Neil

Thanks for the info, when Dave said, “ most people will know” I was mystified as there was nothing I could find on their website. Shame as one of the better shows.

Steve

12/10/2018 21:44:57

Posted by steamdave on 11/10/2018 22:53:36:

No doubt by now, most people will know that there will not be a 2019 Bristol ME Exhibition.

I have been going over from Ireland to Bristol for a few years as a private exhibitor and was wondering what other similar exhibitions are around for private exhibitors. Ideally, I would like to attend a show that is on for more than one day to make the travelling worthwhile.

Any suggestions (and perhaps an invitation)? I don't do hot fog.

Dave
The Emerald Isle

Where is the news about no Bristol next year?

Steve

Thread: Doncaster show
28/08/2018 22:36:39

Posted by Mark Rand on 28/08/2018 20:34:03:

It isn't the 26th one at Doncaster Racecourse, since it started at Donnington...

cheeky

Err it started at Harrogate.

The one at Donnington was at kenilwirth before that and had aprevious home and is now at foss wayj.

Steve

Thread: What did you do Today 2018
11/08/2018 16:20:19

Posted by Andrew Johnston on 09/08/2018 19:07:37:

Machined the second smokebox door last night. I got a better finish than on the first one, simply by reversing the feed direction from inside to outside to outside to inside:

smokebox door me.jpg

If I'd thought about it that gives a rather better cutting geometry for the tool with less chance of interference, especially near the centre.

Andrew

Was the door a casting or a solid disk of steel.

Steve

Thread: Rear toolpost for parting tool
23/07/2018 12:08:31
Posted by thaiguzzi on 23/07/2018 06:08:48:

Yes, thanx for that, but i'm determined to persevere from the front, using both HSS and tipped tooling. If it worked on a Colchester (yes, i know, mass & rigidity etc), i'll be damned and eventually make sure it will work on a Boxford. No problems on 30-40 mm alloy etc, but the same cannot be said for steel or S/S in the same OD.

I was always under the impression that rear toolposts were designed for Myfords, with their flat ways, and saddle design....

Two experiances that may be related

We had a Colchester Master at work with a rear toolpost carbide insert upside down, reasonable machine but when I tried to part of a load of M24 A4 stainles steel bolts (316) by hand feeding as i worked in design normally but i needed these for a Factory acceptance test the next day, it kept digging in and breaking the tip. This was only cured by using power feed then I did about 50 of them easily.

Now days at home I have a MKII Colchester student, using a front mounted T2 Dickenson toolpost and a Sandvik inserted blade I had digins, changed the toolpost to a create multifix copy now goes through 316L like butter, best on power feed but can do it by hand if you keep cutting.

Couldnt see angy damageon the Dickenson toolpost but the multifix seems far more rigid,

Steve

Thread: Ainjest High Speed Treading Unit on my new Master 2500
14/05/2018 09:13:21

What is not to like about been able to thread at turning speeds?

We had on at work ( old Job ) but threads were far cleaner turned at proper speeds with full form insets in 316 stainless steel.

Steve

Thread: Colchester student cross slide - what bolt threads?
11/05/2018 07:28:34

Probably whitworth if not UNC as per my mk Ii

Steve

Thread: London model engineering exhibition
22/01/2018 15:08:05
Posted by Martin 100 on 22/01/2018 14:24:36:

Anti-dementia time, hopefully someone can help!

Before the 'London' exhibition was at its current location and when it wasn't at Wembley, where was it and in roughly what years?

I know I've been, maybe in the 1980's or 90's, maybe at Olympia?

Before Wembly Arena it was at Picketts lock in two halls.

The other ME exhibition that was last at Brooklands before that Ascott and Sandown Park and before that Olympia when it was with the other magazine interests such as military AFV models, model planes, soldiers and railways etc

Steve

Thread: 1/4 BSP PIPE
22/11/2017 16:46:34
Posted by JasonB on 22/11/2017 16:13:58:

Does 1/4" pipe come in more than one wall thickness. To me it is 1/4" bore and the correct OD to suit 1/4" BSP what other size do you two need?

There is various schedules (wall thickness)

The OD is constant (10.29mm )the wall is described by schedule 10s 40, 40s, 80, etc

Such is the fun between pipe and tube

Steve

Thread: Choosing my first propane torch?
30/06/2017 18:13:29

For £63 Inc vat you can get a complete starter set up at Hamilton or for£74 you can have one with a cyclone burner which are very useful. You can add more burners and neck tubes as you require them, often available on eBay or on special offer at the shows.

Steve

Thread: A moan - steel of mysterious composition
30/06/2017 09:32:24
Posted by jason udall on 30/06/2017 08:52:18:
I find it very surprising that that every component isn't documented down to the batch /cast of the steel.
But maybe the manufacturer didn't feel like shareing with you.

That said more interesting might be the apparent variation of hardness across the section....

Work hardening would be my explanation.
I don't expect any possible effect of radiation but repeated stress might be an intresting essay

Edited By jason udall on 30/06/2017 08:54:54

Why would it be documented to that level?

Its an adjustable bed i would expect most of the parts to be mild steel, might be modern equivalent of EN3 or EN1

Steve

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