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Member postings for Frances IoM

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

Thread: Special nuts for various parts
05/03/2021 08:34:11
the OP seems to have edited his posting to make the image inaccessible
Thread: Groups io browser operation
03/03/2021 15:49:24
The drive to ever more secure https systems is driven by the wifi transmission needed for mobile phones and the rise of eBanking - Google pushed it from the start as some crafty cafe owners + small ISPs set up a mechanism to replace google adverts with their own adverts
The simpler precursors to today's highly securecrypto systems were once blocked as armaments by the USA.
For those of us ancients still on landlines such crypto are gross overkill but not for the great multitude who now have little access to physical banks etc
Thread: Issue number 1995
02/03/2021 16:14:49
that would place it around June 1939 - I know the SMEE library has bound copies including this year but until lockdown ends access to building is restricted
Probably little help at moment but the librarian at SMEE would in past copy articles for members - maybe there is a large public library near you that can offer this service.

Edited By Frances IoM on 02/03/2021 16:15:11

Thread: Ancient Skills
28/02/2021 20:52:58
when in 1723 the local blacksmith + pub landlord having access to some old cannon metal decided to counterfeit some pennies he apparently just used one good penny to make a mould presumeably using clay - the details were not described in the court hearing but many pennies were made so probably the moulds had the imprints of one side + channels for the molten metal to flow with a corresponding mould of the reverse of the coins which would be abutted to the other mould and the molten metal poured into the baked moulds - the small bits of metal from the channels were filed off.
The jury tho the blacksmith acknowledged having made the coins acquitted him as under a new law counterfeiting of brass as well as silver coins was a capital offence (the blacksmith also hadn't realised but was lucky in that his son had married the daughter of the attorney general!

Many silver coins were quite small and a single master could be used for many copies - the moulds could be reused tho wear would be seen
Thread: I want a telescope
26/02/2021 10:09:01
and I'm one of a select group who have been up to the prime focus of the beast ! - admittedly many many years ago before the rebuild
Thread: Replacement lathe lamp suggestions?
25/02/2021 18:58:36
"Just as well, since no around here seems to stock 24V 50W QH!

have you tried a local coach operator ? 24V would also be used on lorries etc.
Thread: I want a telescope
25/02/2021 17:57:35
my Russian spotting telescope goes upto 24x which is considerably more than I can handle without a stand.

In my flat in Peel which looks out as far as the Mountains of Mourne and as far as the Mull of Kintyre I have a considerably larger scope with prism + better optics - you need a very stable tripod with weight balanced mounting (home made) but I can read the names of ships certainly at 2 or 3 miles off shore and on good days even further.

This cost me about ?60 15 years ago from the local photographic shop - if you go this way make sure you can get an adaptor to allow attaching a camera - if I had the money I would go for a binocular system - if you are into bird spotting then a much lower magnification will suffice and be more usable and hand held would be near essential unless you have a local watering hole you can set up a tripoded scope on - if your horizon is just 4 miles then I suspect 24x will be the most needed.

If I can round to it attaching a hi definition PiCamera with a C mount it would make using the scope much easier and allow better photo opportunities -

Edited By Frances IoM on 25/02/2021 17:59:53

Edited By Frances IoM on 25/02/2021 18:20:59

Thread: Replacement lathe lamp suggestions?
25/02/2021 14:49:29
one simple trick is to stick a length of water proof LED light strip to the splash tray (assuming you have one - Warco WM180 + larger models make it easy with a folded lip on this tray into which the strip can be placed so doesn't shine into ones eyes - gives quite effective local lighting - a small LED on a flexible stalk can then be used for detailed lighting - obviously larger lathes might need more lighting
Thread: Cumulative calculation errors
25/02/2021 08:49:08
look up the threads by Jim Noci - he + others discus Bresenham's algorithm
Thread: Skynet is Coming
24/02/2021 17:42:07
The point I was trying to make is that the cost of these small PIC-like chips are very small + total cost considerably less than any design that requires components that cannot be autoplaced - the ability to use compute power to avoid components such as large value capacitors is another significant cost saving - added to these is the stocking cost of a single component vs many.
Programmers for the PIC series are quite cheap for small quantity use by amateurs - several designs from last maybe 8 or more years in enthusiast magazines have used then to save cct board space - today's trend is of course to use the small arduinos, the Aussie micromate + now the PiPico as single components within a larger design
Thread: Building a small bench
23/02/2021 20:15:35
"I'm not sure what the right treatment is, but it's certainly not nothing" -
a good sanding followed by a couple of coats of polyurethane floor varnish should protect against most things but thin stainless steel on top of the ply makes a good work surface for metal bashing - for woodworking real hardwood is unbeatable for just its beauty + feel but don't let oil anywhere near it.
Thread: Skynet is Coming
23/02/2021 19:47:40
"I could probably replace that lot with a couple of transistors and a few resistors. Is this just a lazy designer or was he told " We've bought 1/2 a million too many. Can you get rid of them for us?"

No it sounds like a simple PIC processor - they will cost less than your 2 transistors which would probably need a capacitor for timing purposes (the latter being guaranteed not to last 10yrs unless quite expensive. Since you knew what it had to do program your own PIC
Thread: Boxford Cross slide
23/02/2021 19:08:09
2BA grub screws are not cheap (at least not from my supplier who only has limited selection of BA threaded items) - they may well have a ball bearing trapped at the end as this was a common approach
You should only need one adjustable screw to lock the gib. Nylon fishing line is readily + cheaply available in many diameters and can be used to replace worn or missing self locking material

Edited By Frances IoM on 23/02/2021 19:13:16

Thread: You think you have trouble starting your car on a cold morning?
19/02/2021 21:52:00
My winter holiday in the 70s and early 80s was to Soviet Russia always the week after that including the 1st of Jan as this week was Orthodox Xmas - temps could range from -40 up to a comfortable (for walking ) -16 - the few years that were warmer had miserable slush - the trams, buses, trains + our coaches ran even at the -40 temps (overnight train Leningrad to Moscow no heating + outside temp -40 was somewhat cold!) - soviet engineering was impressive in its simplicity but generally worked.
Thread: What about a "like" button on the forum?
19/02/2021 15:28:44
Michael that will get you the ire of our Editor who has it past defended the use of farcebook - that now 2 year old page is very relevant today.
Thread: What Did You Do Today 2021
18/02/2021 17:45:41
You were lucky that it was a iPhone model that was repairable,apparently not all are - many have pointed out that this built in obsolescence and non-repairability does nothing except to throw valuable resources into landfill

However locally there are several shops that seem to advertise such repairs and are still open in lockdown as necessary services whereas to buy a new phone you need go online.
Thread: Warco 180 mini lathe
18/02/2021 14:24:26
did you try the lamp test? - a squirt of switch cleaner on the pot might well suffice (buy a spray can of servistol or similar from RS or Farnell)

Warco is generally very helpful and once this lockdown is over (if ever) it might well be worth a visit if phone/emails aren't successful
Thread: What tool to use please
18/02/2021 11:41:49
could you start with a SS cutting disk and then add the boss
eg as part of a parcel of bits I wanted I have maybe 8 or so 80mm dia 1mm thick sharpened to a cutting edge as used for meat slicing of those lumps of cooked mince seen in many takeaway establishments

Edited By Frances IoM on 18/02/2021 11:44:39

Thread: Warco 180 mini lathe
17/02/2021 21:55:27
the usual suggested 1st test is to disconnect the motor and replace with a 60-100W incandescent lamp - if the speed control alters the brilliance then you know the fault lies in the motor if not then somewhere in the control board tho that can be expensive to replace tho it may be as simple as a worn pot that controls the speed. I have a WM180 as well and was told always turn the pot to lowest speed before switching back on
Thread: Pro Machine Tools website
17/02/2021 18:24:04
its an old site - not updated to https but many browsers now require https rather than http thus tend to hang
Alter your preferences to allow http
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