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Member postings for David George 1

Here is a list of all the postings David George 1 has made in our forums. Click on a thread name to jump to the thread.

Thread: Visit to Bleetchly Park
14/08/2017 18:31:23

I went to Bletchley park and was amazed by the engineering in some of the exhibits here are a few pictures.

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Amazing place

David

Thread: First Project
10/08/2017 21:42:07

Machining 4 jaw chuck body.

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David

Thread: How much out of the chuck?
05/08/2017 09:32:44

Hi Russell The object is to see the results of holding bars differently and getting used to a lathe and what results you get for this particular lathe and it's sturdiness.

David

04/08/2017 21:42:38

Hi Nige I would ask you to do three things.

1 put a piece in to the three jaw chuck holding it with the full width of the chuck and having it sticking it about 1 1/2 inches. With a nice sharp tool, try various cuts start with a small fine cut and measure the diameter at different places along its length and see if it is parallel. write down the results. Then take a larger cut say .05 and repeat the results.

2 try the same procedure with a piece sticking out about 3 inches.

3 Take an 8 inch piece stick it as far back into the chuck as far as it will go, face the end and centre drill the end with a No 3 or 4 centre drill. Pull out the bar so you are holding it with about 1/2 an inch, support the end with a revolving centre and lock up the tailstock. Repeat the same cuts as before making sure that you clear the side of the tailstock when you wind in with cross slide and that the bar isn't pushed into the chuck losing the support of the centre.

reduce any cuts that seem to go badly and record and learn if you can cut parallel and smooth etc.

David

Thread: Myford M type question
04/08/2017 06:57:37

Hi Brian just measured my M type and i can just get just over 17 inch but there is a long bed type I don't know about.

David

Thread: Wiring Newman motor on Myford ML7
01/08/2017 22:20:42

Hi Max the wires in the connection box are blue neutral to end of two coils in motor and live to two coils in motor via link strip not forgetting the earth connection. One coil is a starting coil which switches off as the motor comes up to speed via a centrifugal switch. The other coil is the run coil and is always connected. In order to reverse the motor you have to reverse the start coil feed and to do that you need a reversing switch and replace the motor cable with a 5 core cable and a no volt on off switch.

David

Thread: Lathe tools - what are these for?
01/08/2017 07:42:47

Just been using a similar tool to put the curved face on my flat belt pull face.

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David

Thread: First Project
31/07/2017 18:29:33

I agree with you that the chuck is a bit large, but it is the smallest that I can find at 21mm dia by 28 long 4mm drill .

David

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30/07/2017 16:48:20

Next stage finished on Lathe. Headstock finished and chuck fitted to tailstock. All looks ok at the moment.

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David

Thread: Another Newbie!
30/07/2017 12:03:25

Welcome to the forum. nice to have new members. what are your interests, what are the electric bits for, and where are you based in the world or locality.

David

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Thread: workshop rust
26/07/2017 16:50:55

Hi David, I have a garage which is partly buried into a garden which rises up a slope and suffered damp. I found that the damp could be partly prevented by painting the floor and walls with a high grade floor paint and a use of a dehumidifier and a wipe with an oily cloth when I have finished with any tools. I seem to have a rust free garage.

David

Thread: 2040 deadline for Diesel and Petrol cars.
26/07/2017 13:59:31

Just down the road from where I live a mini gas powered powerstation is being installed and as I went to collect a new gear for my M Type lathe from an industrial estate just north of Chesterfield the are installing another. What pollution do these give out and perhaps gas powered car's are the way to go.

David

Thread: Hello
26/07/2017 07:37:36

Hi Andy welcome to the forum. As a retired bookmaker myself it is hard not to have access to all that machinery so you have to get more flexible to marking things and try new things but it is rewarding to finnish a few things. Where are you based as it sometimes helps to tap local information but if you ask there is a wealth of knowledge on the forum.

David

Thread: First Project
24/07/2017 13:16:42

I have tried to fit ball bearings into the headstock so I can run it at a higher speed, two in the front bearing and one in the rear. When I have made the spindle I shall see if it works.

David

24/07/2017 12:00:53

I have done a few new parts for Stuart Lathe.

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David

Thread: Abrasive polishing sticks
10/07/2017 20:19:25

Hi Dave

I have a few pieces left over from my last job, but on holiday for the rest of this week I can send you some next week if that is soon enough. I used it in my old job on spark erosion polishing from EDM suplies. I will send a PM next week.

Dave

Edited By David George 1 on 10/07/2017 20:20:06

Thread: Machinery enamel paint
02/07/2017 08:07:42

Dacrylate paints are just down the road from me and I have used their machinery paint for many years whilst at work and used on refurbing my lathe. Very durable and easy to use any colour can be mixed. Not in any way connected to them just a satisfied customers.

David

Edited By David George 1 on 02/07/2017 08:08:23

Thread: Avoiding Work Holding Damage: How do you decide the cutting order?
30/06/2017 18:16:33

Hi Dave after No12 part off, I would have made a small mandrel to hold it on. use same material unless I had something I already have. Make a washer to trap end 3mm thick 5mm hole and outside slightly larger than 5mm cap screw. Then I would turn a spigot to just fit into the larger bore and drill and tap a hole 5mm long enough to take cap screw. Put on to mandrel and finish turn you can also use mandrel to hold it to drill vent.

David

Thread: Old rollocks
29/06/2017 22:51:50

hold the shaft in the chuck to hold it somewhere near put angle plate up to fork end and pack and clamp. put angle plate onto faceplate or if you have a mill reverse bore outside of shaft. balance faceplate with counter balance weights if turning.

David

Thread: Transformer temperature
23/06/2017 21:21:19

Hi Mick

I have a small Hoselock pond pump on a small water feature and the power supply has always run hot. When it was new I rang support and was told they do run hot but if it fails or causes any problem call back and they would replace it. That was four or five years ago. Its a 240 to 24v 1 amp model 62531-000. its very hot to the touch and always has been I think it helps to keep my tools rust free in winter.

David

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