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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: Stop ended Tee slot in Meehanite
17/04/2021 12:48:01

If the mill chokes a shop vac will help with dust removal.

it will definitely choke if the slot is blind.

Thread: Trademark Infringements
17/04/2021 10:43:49

You probably should be buying from here the 250 refers to the lowest tensile strength (250 to 350) and there is a Meehanite grade that matches that tensile strength.

But then you look somewhere else and grade 250 is claimed to be 150 to 200 on a known iffy metals site.

Miss spelling Meanite seems common to and suggests the trade mark is being defended.

Thread: Threaded milling cutters
16/04/2021 14:26:11

You only need 4 sizes of collet

6mm 10mm 12mm 16mm

16/04/2021 11:56:30

The MT2 sized ones will be worth keeping for when the ER chuck takes up too much room. Assuming you mean threaded internally and that you can still take a shaving off a fingernail with them.

Thread: Plumbing mystery
15/04/2021 19:59:00

If the pipe rises up like that the lower run would not empty and you would have found the old piping full of water when you changed it.

Thread: Problem with 4 jaw chuck
14/04/2021 19:53:23

I had one like that, more commonly known as a door stop.

Thread: Covid
14/04/2021 16:29:50
Posted by SillyOldDuffer on 18/03/2021 20:23:27:

. Can't believe you chaps are are the sort who would fix a red oil warning light by removing the bulb!

And although putting one's head in the sand is a great comfort, it does leave the rear end terribly exposed...

devil

Dave

How offensive, an engineer would remove the wire from the oil pressure sensor, but that would affect the green light the red one says the generator isn't charging laugh

Thread: Any Ideas please?
13/04/2021 11:57:04

It's possible that the flywheel whipped a bit too much in the designed position due to the skinny crank and long unsupported length the real answer might be another main bearing.

If the flywheel was spoked would it still be heavy enough to allow low revs?

Thread: Lathe drive motor
11/04/2021 18:04:22

I have a brushed 1915 motor that reverses by rotating the brush carrier in a curved slot It's 1/4hp and as big as a modern 2hp. Birmingham Science Museum had one on display when it was in Newhall St.

lathe4.jpg

lathe3.jpg

Edited By Dave Halford on 11/04/2021 18:06:55

Thread: Traction Talk forum
09/04/2021 16:17:55

It's a test of wether you care enough to stay smiley

Thread: ER40 collet nut seized
09/04/2021 16:15:21

Personally I don't believe that oil will stop a thread jamming or galling when not under load. Sometimes you can undo a bolt enough to spin the washer under the head then continuing to removing the bolt begins to include removing the thread as well.

The trouble is the process is so destructive you can't tell what caused it.

08/04/2021 20:13:22

Only on cars, undo two turns then lockup I always blamed a bit of thread breaking off and jamming.

Thread: Source of 2 inch balls for water pump
08/04/2021 16:54:05

Are we talking about one of these the valve seems to be low energy.

08/04/2021 16:36:25
Posted by Jeff Dayman on 08/04/2021 14:30:25:

50 mm wood balls are available on Aliexpress (China import). Search their site for "Wooden balls without bore Dia. 50mm/60mm/70mm/80mm"

They may have plastic ones too, acetal would be a good material choice if they have the dia you need in acetal, but probably a lot more money than wood balls.

If you use wood balls I suggest multiple dips in melted wax to seal them, this will have minimal chance of leaching bad chemical pollution into water as varnish/chemical wood sealer might.

It's probably important to remember that wood expands when waterlogged and also sinks in water.

Thread: Milling machines - western-made s/h recommendations up to 2k
07/04/2021 11:38:45

I suspect you may find the 2 axis swing and tilt clamped head on the VMC a bit wobbly.

We have VMC owners on here, have a read of their posts.

Edited By Dave Halford on 07/04/2021 11:51:34

Thread: Elliot omnimill horizontal lead screw
06/04/2021 17:20:07

If I'm not mistaken all ball screws are metric.

Thread: Milling machines - western-made s/h recommendations up to 2k
05/04/2021 12:05:49

Lets put it this way. There no chance of me paying £1500 to fit a quill head on my Centec 2A and I'm pretty sure thats what the owner of the blue machine does. (use a bench drill)

Edited By Dave Halford on 05/04/2021 12:14:05

05/04/2021 10:55:22

Landy Lift?

West Yorkshire though.

Edited By Dave Halford on 05/04/2021 10:57:01

05/04/2021 10:54:18

William,

The Raglan is quite small and size wise in a different league to the others.

Rent a van for a day and save the interior of your poor old camper.

Thread: slipping eccentrics?
04/04/2021 11:41:10
Posted by Terry Chapman on 04/04/2021 09:36:14:

Hi,I have a little problem with my 3/4" Holden engine. I can set the timing up and it runs fine but after a while it goes out because eccentrics slip.

They have tiny little screws holding/for adjustment but dont seem man enough for the job? I dont want to over tighten them for fear of breaking the slot? Would loctite be the answer or go to allen screws?

Many thanks.

Allen screws assuming they aren't tiny. Some are pointed and some have a cup end.

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