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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: Dam Solution?
06/08/2019 08:41:33
Posted by peak4 on 05/08/2019 19:26:08:
Posted by JA on 05/08/2019 19:10:53:

I have tried to find the capacity of the pumps being used without success. 24 million litres/hr sounds like an awful lot. However if the bore of the pipe was 1" the flow would be 3.7 gal/s which seems sensible.


These from Hereford and Worcester are 7000 litres / Minute apparently

i.e. 420,000 l/hr and there were at least 23 of them working at one time so about 9.6 million l/hr


Edited By peak4 on 05/08/2019 19:27:11

At 7000l/s the velocity in the 150mm / 6" pipe the pump sets have, would be about 1.13m/sec. ie in the normal range of 1 to 3m/s pipe velocity.

for the syphon at 1480 gps is 88800GPM so allowing 18" pipe (500mm as suggested the velocity would be 35m/s

So two questions wink

how thick does the pipe have to be to resist erosion?

How do you stop it working as a water jet cutter at the discharge?

And in the time we have been speculating on this they have mobalised the pumps and drained 50% or the water


03/08/2019 21:24:15
Posted by Neil Wyatt on 03/08/2019 20:24:59:

Rather than decrying Wikipedia as 'inaccurate why not take a look at some of the plentiful references in the article?

Past research has shown it to be no less accurate than the Encyclopaedia Britannica.


P.S. Looks to me that the pumps are in the floating yellow bits (sorry Original thought was wrong...)

Edited By Neil Wyatt on 03/08/2019 20:26:32

They are

Come from the High volume pump sets they have been sending.

The are 50 + sets distributed around the fire brigades that do about 420 m3/hr

High Volume pump pods

Saw somewhere they have 16 sets in place now


Thread: Laser cut plates
02/08/2019 21:40:04
Posted by Fowlers Fury on 02/08/2019 20:50:12:

34046 - Have you checked with Malcolm what excess - if any - he requires to be added to your required dimensions? He's done several laser-cut items from my CAD dwgs and he's queried some of my dimensions thankfully !

The laser-cut edges from the company he used for my items were "rough" and hard. They needed draw filing smooth with a diamond file, I accept that techniques may have moved on in the last couple of years but a small dimensional excess was incorporated to allow for the smoothing-off.

If you find a laser cutting company that cuts a lot of stainless steel they wil use a purge gas and the edges will be clean with no oxide.


Thread: What milling tip do I need?
21/07/2019 21:49:07
Posted by Alistair Robertson 1 on 21/07/2019 21:05:20:


I have an 80mm dia. Facing milling cutter with 7 insert locations.

It came to me in a box with a lot of tooling at a local auction a couple of years ago. I have just got to the bottom of the box recently and it was a pleasant surprise as it is in excellent condition, BUT there are no tips to fit it, but the screws are there and don't look as if they have been used!

The only identification is the code A241.80.R.07 The rectangular tips look to be about 12mm x 8mm x 5mm thick with a 3.5mm screw hole. (These sizes are approx)

I have been in contact with several tooling suppliers but as yet none of them can identify what tips I need. I may have to go to a few suppliers and ask to see if I can get something to fit, but perhaps some of the very knowledgeable folks on this forum can identify what I need.

Its Supplied by WNT and new would set you back £418 without discount

Shell end mount needed is 27mm

Insets are LD 1504

WNT will sell to anyone ring up place an order pay by card and call the company hobby. My wife has an account for getting christmas presents etc


Thread: Do you wear a mask grinding HSS tool bits?
28/05/2019 08:58:42
Posted by Martin Kyte on 28/05/2019 08:48:13:



Cobalt would be one good reason.


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


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.


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


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.


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.


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


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

Best regards Mick

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


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 I used one of these about 50 years ago very versatile but a pain to set up accurately.


Why were they a pain to set up.

Interested as I fancy something of that design style


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

Swan foundry in Banbury

Sand castings with Iron and all sorts of lost wax


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.


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.


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

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


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?


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.


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.


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.

The Emerald Isle

Where is the news about no Bristol next year?


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...


Err it started at Harrogate.

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


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.


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


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,


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.


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