Member postings for Sandgrounder

If this is the site you want I've just opened www.cnczone.com no problem at all, using Firefox on Linux Mint 21

John

Thanks Adam, just done it,

John

Same for me, the ad' I put on never showed up in the "Latest "For Sale" Ads", but it did sell to someone who knew where to look. Also I can't see where I can either delete the ad' now or mark it as sold.

John

I've never heard of it in my 40 years of mechanical design office work either, but we once saw a drawing from an outside firm that described the fit of a pin in a hole as a 'cheesy fit' which caused a bit of amusement.

I upgraded to LM 21.0 this morning from LM 17.3 and it looks good to me so far but I've not had chance to go into all it has to offer, and the 17.3 was a bit out of date.

John

that's what I did with a 1L bottle of MEKP I had, I rang my the council and they told me to take it to our local tip which I did.

John

Plenty of new 1/2" 13TPI UNC items on eBay from UK sellers. taps, dies, studding, nuts etc

I found it the same in Death Valley CA at 110F, just nice but that is the big danger I suppose, you still loose fluids but don't realise it as the sweat evaporates immediately and doesn't run down your face and make all your clothes wet.

It was a pleasant 23C in my cellar workshop today as opposed to 33C in the garden.

John

They've certainly made a ML7 bed with metric lead-screw and calibrated hand wheel, I have one with a 3mm pitch screw and handwheel, it was bought from them about 30 years ago by the company I worked for use as an optical bench, I bought it from them when it was no longer needed, it was a 1-off special so I've no idea what is currently available.

John

This is the link to a post of mine on here,

https://www.model-engineer.co.uk/sites/7/images/member_albums/152997/650608.jpg

Why are square headed screws used anyway and not hexagon headed? I've always thought the latter are easier to obtain and use with more spanner positions available, especially if using a bi-hex wrench. is it just historical?

John

I used to start a Brooks 1HP circular saw motor for years like that with no problems.

John

That's very interesting, I worked at Pilkington for 30 years and have visited two Chance factories, Smethwick and St Asaph and seen plenty of gas torches but never knew Chance made them.

John

Also slightly off-topic

The shop I used to buy hardware fittings from would sell you a 'pair of hinges' if you wanted 2 and 'one and a half pair' if you wanted 3, I don't know if that was a normal ironmongers expression or not.

John

The now closed Platt Bridge railway station in the Wigan area is often referred to locally as 'Platt Waz', supposedly because in the days of old the train driver would stop at the platform and go and relieve himself ' have a waz' by the bridge.

John

https://www.wiganworld.co.uk/communicate/mb_message.php?opt=f1&opt2=&msd=715807&offset=14240&subject=Why%2520is%2520Platt%2520Bridge%2520called%2520Platt%2520Waz

It's a long time since I did electrical calc's at night school but isn't the power factor shown as Cos ϕ or Cos phi not cos theta?

John

Edited By Sandgrounder on 05/03/2022 07:22:21

When I was at work many years ago we bought them off,

https://www.leveldevelopments.com/products/vials/

John

Hi Eliza,

You should definitely take someone experienced with you for advice when buying a lathe especially a second hand one, someone with a bit of experience but with no interest in buying it will see a lot more shortcomings than you will (standard advice for buying cars).

For example I first used a lathe at school in 1956 but spent most of my working life in a mechanical engineering drawing office as a design draughtsman so I'd seen many varieties of lathes in the workshops but not used them, about 30 years ago I was looking to buy my first lathe and heard about one for sale, drove to the house and there was a clean looking lathe, can't remember the make but it ran and all seemed OK, plenty of bits and pieces with it, luckily I said I was interested but would confirm later, on the way home something started nagging me, after about 20mins i realised I hadn't seen a tailstock, got home and rang him up and he sheepishly confirmed my thoughts.

It's so easy to get carried way when you want something and take the wrong decision.

I know there is a lot you can do without a tailstock but there's also a lot you can't

John

Thankfully not quite as dramatic as Clive's rat experiences but still on the subject of animal pests, About 20 years ago my wife and I spent a fortnight in a ground floor chalet in Gran Canaria and every evening when we came home and opened the door half a dozen or more cockroaches were scuttling around the floor, to dispatch them I kept the door mat rolled up ready and quickly whacked them all and kicked the bodies out onto the patio, every morning when I went out they were gone so I just assumed I hadn't hit them hard enough and they had recovered, but one morning I got up a bit earlier and went out and saw what was happening, there were two long lines of ants, one led to the cockroach bodies where they were dismantling them, the other line of ants carrying bits of legs, wings and bodies led into the garden area to their nest, nothing was left at all, wish I could have filmed it.

John

'See old Harry catch a herring trawling off America'

John

I use almost exactly the same set up regards motor and mop size and like Nigel I can stall the motor if I press too hard on the mop.

John