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Member postings for Sandgrounder

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

Thread: Lathe chuck guards - how many folk use them?
31/10/2019 06:49:08

I've never had one and I doubt if I would use it if I did, but what does scare me is seeing photos of older lathes for sale with no guards over the drive belts and change wheels.I don't really want more than one danger area (the chuck) to concentrate on.

Thread: Anyone know about buying freehold to a house in the north
16/10/2019 19:26:28

I have about 800 years left on my leasehold property which costs me £6 per year, I enquired about buying the freehold but my solicitor said that there would be covenants left on the land which will mean that I would still have to pay for any extensions etc. so it would'nt be worth it as the leaseholder would probably charge around £30000 to lift them, otherwise it would be freehold in name only

Thread: Collet sticking in chuck
03/10/2019 11:17:51

Thank you all for your very helpful advice which has resulted in me finding the problem, the collet does lock into the nut with a click however it doesn't withdraw the collet, but I found another chuck, a MT3 one, and this nut fits the MT2 one as well, this was assembled the same way and works, I've just tried both a couple of times more and the results the same, the MT2 nut must have a fault, it was just a cheap one but it will suffice now I have a nut that fits.

Thanks for pointing me in the right direction, the Arc Euro page is very good.

Thanks

John

03/10/2019 10:32:33

I've got a Myford Lever Action Collet Chuck with it's set of Imperial collets but I thought I'd try one of the ER series MT2 chucks as metric collets are both cheaper and much more easily obtained, for a trial I bought a cheap chuck which fitted and ran well in the lathe, however it was difficult to remove the work from the chuck, I'd remove the locking nut but the collet was still stuck and required a tap with a brass drift to eject it, as I only have two hands, one for the hammer and the other for the drift this meant both the collet and the work springing out and landing in the swarf under the bed, is this because I bought a cheap collet chuck, do more expensive ones automatically loosen when the locking nut is unscrewed?

Thanks for any advice.

John

Thread: O rings.
11/09/2019 14:25:08

I've just bought 5 nitrile 'O' rings for £2.64 inc postage from,

https://www.ebay.co.uk/str/sealsuppliesuk/Nitrile/_i.html?_storecat=24158175014

35mm dia X 3mm section, much too big for you but a quick look shows them down to 1mm i/dia X 1mm section, other  materials available as well.

Edited By Sandgrounder on 11/09/2019 14:27:56

Thread: Ambiguity of the day
23/08/2019 10:45:38

Amazon in Paris are making redundancies in their French workforce.

Thread: My Faircut Lathe
20/08/2019 06:52:33
Posted by Andy Carlson on 19/08/2019 23:02:52:
Posted by Sandgrounder on 19/08/2019 15:18:58:

Thanks for the manual, although I hope I'll never need it for my motor.

It does tell you how to change things around if you want to mount it sideways up so if I am understanding your pic correctly then it might be worth a read.

The screws on mine came undone without too much assertiveness - just a proper big screwdriver to fit the big slots but the chap in a vid on YouTube had to use an impact driver so YMMV as they say in the.US.

Thanks for that Andy,

I'd downloaded the manual and had a quick read but the bit about sideways mounting hadn't registered, I'll look into doing it.

John

19/08/2019 15:18:58

Thanks for the manual, although I hope I'll never need it for my motor.

19/08/2019 10:10:52
Posted by Andy Carlson on 19/08/2019 08:03:54:
Posted by Sandgrounder on 19/08/2019 06:53:03:
Posted by Dave Halford on 18/08/2019 20:32:38:

Motor looks familiar 1/4hp American Century Electric Co. with brushes, WW1 vintage?

Edited By Dave Halford on 18/08/2019 20:35:42

I've got a 1/2HP motor of the same make which I use for a buffing machine, in addition to the brass plate shown mine has an additional plate reading 'Refrigeration Motor'.

Care to share any photos of your motor?

This is the best I can do at the moment, the camera does'nt seem to do close ups very well, and excuse the workshop clutter as I'm just re-arranging things, I've tried to crop most of it out. The motor serial no is 958784

motor.jpeg

nameplate.jpg

Edited By Sandgrounder on 19/08/2019 10:11:50

19/08/2019 06:53:03
Posted by Dave Halford on 18/08/2019 20:32:38:

Motor looks familiar 1/4hp American Century Electric Co. with brushes, WW1 vintage?

Edited By Dave Halford on 18/08/2019 20:35:42

I've got a 1/2HP motor of the same make which I use for a buffing machine, in addition to the brass plate shown mine has an additional plate reading 'Refrigeration Motor'.

Thread: Edison thread tap
31/07/2019 13:24:46

Thats all it is, very simple and if you do have a go at something similar I've just measured it and the material is 0.6mm thick and a bit springy, so something perhaps like nickel silver sheet would be best but I've never worked with it so can't advise, but it is used a lot in electrical contacts etc or some grade of brass sheet?

31/07/2019 12:26:30

I obviously don't know exactly what you're doing or the standard and appearance you want the holders to be, but Edison screw lamp fittings can be very simple and still work very well as an ES10 holder I removed from an old radio shows.

es10.jpg

30/07/2019 07:18:38

Never thought about it before but would there have ever been any taps made? The only Edison screw threads I've ever seen are the ones, both male & female, that are formed in thin brass tubes for the bulb cap and holder.

Thread: Acetone
28/07/2019 09:16:12

I've used quite a bit of acetone in the past fitting out a GRP boat, one thing I've noticed now that I don't use it very often is that the polythene containers can deteriorate and start splitting after a year or so, but not as I would have thought at the bottom which is contact with the liquid, but the top in contact with the vapour.

Thread: How to cut metric threads on an imperial lathe and vice versa.
23/07/2019 20:04:55

I never disengage the leadscrew, at the end of the thread I stop the lathe, turn the cross slide handwheel one full turn to withdraw the tool 2mm ( if that's sufficient ) then reverse the lathe just past the start of the thread, turn the cross slide handwheel one full turn in plus the next cut and proceed.

Thread: Surplus subjects learnt at school.
19/07/2019 20:04:10

Football?

Thread: Threads used on electrical brass fittings
19/07/2019 14:14:26

There is a 'British Brass' thread which is exactly 14mm dia, actually 0.5512" and at 26TPI very close to 1MM pitch.

from Machinery's Screw Thread Book.

Edited By Sandgrounder on 19/07/2019 14:15:34

Edited By Sandgrounder on 19/07/2019 14:17:22

Thread: Different ways of boring a hole
14/07/2019 16:00:18
Posted by Phil P on 14/07/2019 15:04:58:

if you want to be quick but not fussy about the end result you can bore out a long hole on the lathe, but the tool will be springing and flexing all over the place and the method relies on your lathe being in perfect alignment and being able to turn absolutely true over a long length.

Phil

Wouldn't the spring or deflection in the boring bar stay the same for the full length of cut assuming the depth of cut and feed rate stay the same?

14/07/2019 13:41:07

I'd try to do it in the lathe if possible, a Myford 7 rather than use the Sieg 2, especially if the difference between the pilot hole I could drill and the finished bore is quite big and the depth of bore is quite short as this means stopping the mill every few seconds to slacken the boring bar off, adjust it and tighten, it's much quicker in the lathe,

Thread: Myford Super 7 Spindle Lock
09/07/2019 19:23:04

I thought all Myford S7s had a built in lock, mine does and it's shown as 'item 32' a 'pulley lock assembly' in the Myford handbook, pages 40 & 41, just push it in while turning the chuck and it locks letting you unscrew the chuck.

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