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Member postings for Brian G

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

Thread: Odd sized strong bar
18/06/2019 09:10:58

A quick google shows that you have a 1940s US made Plomb "Wright Field" 9/32" drive flex handle. There is an article on them here Alloy Artifacts

I wonder if the arrow is the US military's equivalent of our "crow's foot"?

Brian

Edit:  Snap-on also made 9/16 tools https://www.collectingsnapon.com/index.php?page=socket_sets/C9-32inch/9-32%20intro

Edited By Brian G on 18/06/2019 09:16:49

Thread: Connecting a pair of motor controllers.
03/06/2019 09:29:00

If the DPDT switch is used on the output to reverse the motors, to keep the outputs isolated you would need a 4-pole double throw switch on the outputs. Alternatively, if you don't need centre off, you could do the same thing to the output as Brian suggested for the potentiometer switch and use a single pole switch (or one pole of the existing switch) to control a pair of DPDT relays.

Brian (another one)

Thread: Tracy Tools
05/05/2019 18:08:36
Posted by Nigel Graham 2 on 04/05/2019 23:32:47:

...

- and I can say a 5.5" dia X 1" billet of mild-steel doesn't half make a bang despite the corrugated cardboard wrapping, when posted through the letter box onto a hollow wooden floor!

It would be even noisier in our house, the dog sleeps on the doormat.

Brian

04/05/2019 12:06:36

Ordered 3/16 BSW taps and die from them yesterday at 1 p,m, (I didn't pay for express delivery) and they just arrived in the post, 23 hours later.

Great service

Brian

Thread: AutoCAD substitute
29/04/2019 20:29:37

Thanks for the advice on using box select for hatching Dave. My only defence on dual dimensions is that it is nice to be able to draw something using full-size feet and inches and immediately see the size of the model in millimetres.

Brian

29/04/2019 13:52:18

I switched from AutoCAD to DraftSight a couple of years back and am now in the process of moving to QCad Professional. After 20+ years I am finding it hard to make the move, and some things seem much slower (particularly setting up a hatch on a complex shape where QCad requires me to click on every border element), but in a hobby environment it isn't £1,400 a year slower! Having said that, I really miss dual dimensioning and being able to alter the width of characters. Typing in the alternative units or exploding and shrinking text stops changes being transparent.

Brian

Thread: Z Axis-Support
22/04/2019 14:10:58
Posted by HOWARDT on 22/04/2019 13:19:24:

It looks as you have the cylinder mounted with the rod up. Manufacturers recommend rod down so that the rod seal remains lubrcated.

First thought was "But tailgate struts always have the cylinder down." followed a little later by the realisation that I only look in the tailgate when it is open enlightened

Brian

Thread: Cheap DRO for Mill
20/04/2019 13:55:39
Posted by SillyOldDuffer on 19/04/2019 10:30:39:

...In comparison, I bought a pair of Warco's cheapest and fitted them to my mill, an easy job. ...

However, despite satisfaction, when they fail, I'll go up market. Although they've been reliable, the vulnerability of the scales is a worry and I don't entirely trust them. (Causing time-wasting double checking). The batteries are a pain, and the display hard to read and inconvenient compared with a combined unit. ...

Dave

We fitted the same units to my son's mill but use them with Touch DRO (I replicated the design of the Arduino based unit on stripboard) so that an Amazon Kindle Fire acts as a touch screen display.

Brian

Thread: Where's my Dykem blue gone - there's no need to read this
18/04/2019 14:29:53

Did you lay a curse on this thread Robin? I just picked up a bottle of blue and the top was loose. Blue floor, blue bench, blue lathe and blue hands.

Brian

Thread: Removing a grub screw
17/04/2019 16:22:28

Bought a pin vice and drill bit set from Aldi a while back. Came with two sets of bits, I thought metric and imperial but no, left and right hand metric. Took me a while to work out why I wasn't making a hole blush

Brian

Thread: ACME vs lead screw
17/04/2019 16:18:44

They are both trapezoidal Harry. Generally I think the difference is whether the machine is imperial or metric. Acme (named for the Acme Machine Company) has a thread angle of 29 degrees and dimensioned in inches, whilst ISO trapezoidal threads have a thread angle of 30 degrees and are dimensioned in mm. I suspect however that in the long tradition of mixing standards you can get metric machines using the Acme thread form or imperial machines using the ISO form.

Brian

Thread: 'War Department' (arrow) Marking
15/04/2019 19:45:34

I'm always amused by MOD issue 13-amp plugs, which have an arrow on them to show which way up they go

In the workshop I have a set of metric spanners, feeler, screw and radius gauges issued to my father in the 70s. All marked with the crow's foot (the story passed down in legend within the Dockyard was that Samuel Pepys based the mark on a bird's footprint in the snow whilst trying to reduce theft) but accompanied by a letter saying they were issued as his personal property. This was done as part of metrication as fitters had been expected to buy their own tools, and all their BS/UN tools were becoming obsolete.

Brian

Thread: DraftSight no longer free
09/04/2019 16:02:17
Posted by Limpet on 07/04/2019 19:31:57:

Am I missing something or am I just "special" but my version of Draftsight is still fine even after having to re-download it about 2/3 months ago after a big PC crash ( total reload of everthing). No problems at all and no messagesasking for money.

Look out for an email entitled "A New Era for DraftSight: Important Product Updates" which carries the bad news. The bit that this thread is about is in (their) italics.

Brian

We are also investing in other technologies including an upcoming cloud-based version of DraftSight and much more. Therefore, we want to make you aware that DraftSight 2019 for Windows® is offered in paid versions only, and all free versions of DraftSight (2018 or earlier) will cease to run after 12/31/2019.

Thread: No 20 machine oil
09/04/2019 09:39:27

I had been looking at Alex Oils for SAE 20/ISO 68 and noticed that there are two alternatives, Lumach 68 Lubricating Oil and Lubron ISO 68 Hydraulic Oil. Given that they are both the same price, would there be any advantage to the hydraulic oil?

Brian

Thread: Todays DUMBO award
04/04/2019 19:04:50

I wanted to reduce the diameter of a spigot but the part was too big for the lathe. "I know, I'll use the boring head" I thought. Set the tool facing inward, put the mill in reverse and got on with it. When I finished the job I removed the head from the arbor and started sweating. It was only hand tight but luckily hadn't unscrewed.

Brian

Thread: Machinery Directive and CE marking
04/04/2019 17:25:31
Posted by Robert Atkinson 2 on 04/04/2019 16:47:25:

...none of these differentiate between commercial production and one-off or personal projects....

Perhaps a remedy would be to approach our representatives in the European Parliament to remove the requirements for non-commercial builds in the same way as for boilers?

Brian

Thread: Rulers - my pet peeve
02/04/2019 08:35:48
Posted by Hopper on 02/04/2019 07:58:09:

Why? Why cheapness of manufacture of course. Half the cost. Same price. Bingo.

If it was plain on the back I would agree, but as both sides are marked there isn't a cost saving. I'm reluctant to cut down a 64R but it is starting to appeal.

Brian

02/04/2019 07:42:34

I bought a 100mm rule, clearly marked, handy for working around a machine but only graduated on one face! Instead of the reverse being used for imperial, right-left measurement, putting 1/2mm on the opposite side of the rule or even a set of handy conversion tables, it just says "Axminster".

WHY?

Brian

Thread: Unusual miniature
01/04/2019 10:30:21

According to the ever reliable Wikipedia, Hornsby's patent was for a dual clutch system, not a differential.

There is a model of the Hornsby Steam Chain Tractor at a UK show on YouTube

Brian

Edited By Brian G on 01/04/2019 10:30:57

Thread: Long drills
01/04/2019 08:29:00
Posted by David George 1 on 01/04/2019 07:18:42:

..You can always do the same for taps to tap down deep holes.

David

Your advice is exactly a day too late for me David, Iast night I shortened a part to allow the tap to reach the threaded portion, this morning I would have done what you suggest

Brian

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