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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: Electric Smart Meters
01/04/2021 10:43:40
Posted by old mart on 09/11/2020 18:39:16:

We have had smart meters for electricity and gas for a couple of years now. I was not impressed by the kid who fitted them, just the minimum of training to be certified, but not any sort of proper fitter. The silly gadget they give you to monitor the consumption is sitting unused in a drawer. The only possible advantage could be that the meters we had were very old and that we don't have the meter reader needing to be let into the garage periodically.

We had them fitted last week, the chap that did them seemed to do a good job, he replaced all the wiring from the mains in to my consumer unit including a new mains isolator and moved the gas meter further away from the electric meter etc, it took him over 5 hours and he was most apologetic for the time taken and thanked us for patience, like yourself I also don't use the silly monitor gadget, the plus side for me is I don't have to clear out all the stuff under the stairs every month and crawl in with a torch to read the meters.

Thread: ER32 collets
31/03/2021 19:28:04
Posted by Michael Gilligan on 31/03/2021 10:03:24:
Well, actually ... I wouldn’t

It’s a parallel clamping action, generated by the tapers and the slots

... the internal profile is trivial

MichaelG.

I'm not saying you're wrong it's just that I'm also having trouble visualising it, say a 12mm collet is being closed on a short length of 12mm shaft by the tapers, once the collet clamps onto the shaft it can't be closed further and everything stays parallel, both the internal 12mm diameter and the tapers, even clamping on to a 12mm ball would prevent further closing of the collet in its taper, I do realise that the longer length that is in the collet the greater the holding power will be for milling cutters etc.

John

.

I think we may be ‘on different pages’ , John

Tony and Jason have addressed your point nicely ... but my comment was a specific response to ‘old mart’

i.e. The internal shape of the collet’s bore is trivial when understanding the closing action of the collet.

.... the ones with stepped bores obviously ‘get away with it’ when there is sufficient length being gripped in the larger bore, but I wouldn’t trust any collet to reliably grip a 3mm insertion length. [which is, I think, what Bo’sun was contemplating] unless the material was less than about 1mm diameter.

MichaelG.

Edited By Michael Gilligan on 31/03/2021 10:11:27

Sorry about that Michael, I should have read the previous posts more closely.

John

31/03/2021 08:11:54
Posted by Michael Gilligan on 30/03/2021 21:56:59:
Posted by old mart on 30/03/2021 20:45:23:

You would think that the parallel clamping feature would mean that the collets always had one diameter right through. I have some er25 collets with only half the length at the nominal size.

.

Well, actually ... I wouldn’t

It’s a parallel clamping action, generated by the tapers and the slots

... the internal profile is trivial

MichaelG.

I'm not saying you're wrong it's just that I'm also having trouble visualising it, say a 12mm collet is being closed on a short length of 12mm shaft by the tapers, once the collet clamps onto the shaft it can't be closed further and everything stays parallel, both the internal 12mm diameter and the tapers, even clamping on to a 12mm ball would prevent further closing of the collet in its taper, I do realise that the longer length that is in the collet the greater the holding power will be for milling cutters etc.

John

Thread: New car - or is it a wheeled computer?
26/03/2021 10:15:09

Glad to see the back of old cars, having done jobs on them like replacing a smashed piston and wet liner on a 1950 Vanguard without even jacking it up, barely able to get under it to remove the sump and big end cap, getting covered in oil and freezing cold, years of jobs like this, Mini's with always damp electrics having to take the distributor cap and leads into the house to dry them out in the oven before I could drive to work, now I've not seen a spark plug for 17 years on my last 2 cars, first time starts every morning, never broken down and no rust, cumfy seats, air con and good safety features, that's how I like them.

John

Thread: Plumbing - 'polarity' of tails.
14/03/2021 10:43:32
Posted by Nicholas Farr on 14/03/2021 09:33:00:

Sandgrounder, I can't say that I've ever seen a thermostatic valve that doesn't have an off position however cold it gets, but most will have a frost setting, which is very often a snow flake symbol.

Regards Nick.

I'm not exactly sure what caused it but it can happen, turned both valves off in the morning and removed and drained the radiator and everything was dry all day, went to bed and came down to a wet floor with the TRV passing water, luckily the carpet had been taken up, the TRV is still in use and turns off when required but can still pass on very cold days with the radiator getting slightly warm, perhaps it's faulty.

John

14/03/2021 07:53:01

And be aware that if a radiator is removed leaving the lockshield valve and thermostatic valve both shut off and the room goes very cold, the thermostatic valve can then open and drain the system, it happened to me when I left it one night, but if you have isolation valves at both ends you will be OK.

John

Thread: Bronze balls in place of steel balls in a Land Rover
31/01/2021 09:20:24

What would your Insurance Co think of this modification? Mine has even noted on the poilcy for my Kia Picanto that I've had an 'air horn' and 'reversing sensors' fitted as after manufacture modifications.

Thread: Running a 3phase at home
23/01/2021 06:46:23

You certainly get a variety of suggestions on this site to your questions, for running your Boxford lathe on 3PH anything from a simple and cheap VFD to building your own power station.

Thread: Heat Resistant Clear Material Needed...
07/01/2021 09:08:57

Can you change the window viewing area with a metal plate fitted with a different size and shape glass, if so the best you can get is 'transparent fused silica' glasses which are available for example on eBay, just looking at one which is 37mm sq by 1mm thick, about £6 inc P & P, this type of glass can stand very high temperatures and thermal shock and for a window like this should be OK for 1000C see link below.

https://accuratus.com/fused.html

Thread: DIY Anodising
07/01/2021 08:08:32

As other posters have said, to be able to dispense with sulphuric acid is safer, but sodium hydroxide is also quite nasty, would a sodium carbonate etch solution although slower be satisfactory? I realise that it's only a 2% solution you're using but you have to start off with 100%.

John

Thread: Improved performance over standard V belts?
01/01/2021 07:21:04

I've used the plastic type shown by the OP on my S7 and the only fault I could see is that it requres a higher belt tension to prevent slipping, I've now replaced it with the original type of Brammer link belting made of rubber and canvas and I think it's better, I will add that this is just how it seems to be and I've not done any tests at all.

John

Thread: Supporting Wikipedia
21/11/2020 05:40:44

I give them a donation every year as I use their site many times a day.

John

Thread: Old Die Stock
06/11/2020 19:15:21

One good thing these can do which the usual die can't is to start off in the middle of a thread, if you have a bolt or stud which has the first threads damaged you can start the die off below the damaged section and work backwards.

John

Thread: Sky Broadband and Windows 10
08/10/2020 19:10:01

I'm not on Windows 10 but I am on Sky Broadband in Southport and I've had no problems at all.

Thread: 5BA Threads
24/09/2020 19:40:55

This should help.

https://www.ring-plug-thread-gages.com/PDChart/BA-thread-data.html

Thread: Lathe light
20/09/2020 12:13:07

When fitting LEDs to my machine lights I've used 12V DC ones to remove any strobe effects that the AC ones have.

John

Thread: Best way to remember Mill movements when turning hand wheels
16/09/2020 19:17:26

I just think that turming it clockwise is like screwing a screw in with a screwdriver, it goes in away from you.

Thread: What does a tool look like?
06/09/2020 11:40:11

Probably not of immediate importance to the OP but the external threading tools shown have the cutting points in the centre of the shank, in practice they are better on the left hand side to allow threads to be cut closer to a shoulder.

Thread: How to stop scam phone calls for good?
26/08/2020 15:05:49

How does one know that the call is a nuisance call unless you answer it? I've had quite a few calls in the past that couldn't be identified as genuine until answered but which turned out to be important, and this afternoon my wife and I were out walking on the beach and her mobile rang, the dispay read 'No caller ID', should I answer it she asked me, I said yes definitely and it turned out to be from the Physio at the local hospital, I always answer them.

John

Thread: Music in the Workshop
02/08/2020 13:14:53
Posted by KWIL on 02/08/2020 12:11:29:

Machine tool cutting is the best music in a workshop, definate no no to have a radio on.

I'm exactly the same, with the exception of a car radio I don't listen to anything.

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