Member postings for Sam Stones

Irrespective of it being a sponsored video, this would have to be fifteen minutes worth of anybody’s time.

Engineer, Matthias Wandel, explores his (home-in-winter) surroundings with a thermal imaging camera.

He calls it - 'Exploring the world in infrared with a thermal camera'.

**LINK**

Have fun,

Sam

Or both for convenience/sourcing, as per MichaelG's posts.

Sam

It wasn’t so much the running in reverse Andrew, it was more to do with the possibility that the bolt would unscrew, and perhaps why the arbour was bent.

Speaking of running machinery in reverse, as an apprentice a very long ago time ago, one task I was given was turning up a tapered blank from a piece of HSS. It was the starting point for a 2.5deg reamer.

The flutes of the reamer were milled before the hardening shop did their bit. Finally, it went to the cutter grinder for finishing.

All went well except the (rather accident-prone) miller had cut the flutes left handed.

You get where I’m going?

Actually, the finished reamer came back to me since I had the job of using it to clean up the tapered bore of a sprue bush (look up injection moulding).

Fortunately, the rather clapped out (apprentices) lathe was flat-belt driven from an overhead counter-shaft. The belt had enough slack/stretch to be twisted and the lathe run in reverse. Some of you will cringe at this especially when I reveal that the chuck was screwed onto the end of the lathe spindle and could unscrew.

Under the supervision of the equally anxious foreman, applying plenty of oil I gingerly reamed the bush to a point where it was ready for polishing, as is the custom for reliable mould release.

All went well although I think the miller got some stick for his LH oversight.

Keep safe,

Sam

And the direction of cut, even if the spindle is running in reverse!

Or are my eyes deceiving me Andrew?

Sam

Ditto, Michael.

Even now my brain says it's a 3D ribbon loop, that flips between an inside and an outside centre-riveted continuous strap.

Holding the image flat in two pieces of sheet metal fashioned (as Gary intends), into a double ended caliper is a struggle.

Something stronger than coffee at work?

Cheers,

Sam

I can't imagine Big Clive being without one.

This takes you to his current site...

**LINK**

Here he is, spudger in hand, doing what he's probably best known for, i.e. 'reverse engineering'...

https://www.youtube.com/watch?v=UN0IXJbpsXQ

Sam

Edited By Sam Stones on 17/01/2023 00:14:54

Arriving very much down the end of this thread (14 Dec '22) and appologising if the following has already been raised.

After fifty years in Australia, and a regular visitor to skin-cancer clinics, I feel this needs a mention ...

**LINK**

Cheers,

Sam

Well, I thought I'd try to tidy up my mistake.

Let's see ...

Go to **LINK** then select Stereo Mars (2022 December 03).

That should work.

I could also have mucked about with the image, but I'm not sure if ME will take .png files.

How am I do'in Peter?

Keep safe,

Sam

Edited By Sam Stones on 04/12/2022 18:29:12

Thanks Peter, I now realise my mistake.

All this APOD, url, (and strange English spelling) stuff is a foreign language to an 87 yo.

It won't happen again

Cheers,

Sam

A stereo pair with a big difference, i.e. not macro.

Sorry guys, although someone might do the switch, it's only for cross-eyed viewing.

**LINK**

Cheers,

Sam

Sorry Michael,

My recollection was that no-one noticed when your posts reached 20,000, and for my old brain, twenty-one is easier to remember.

Keep safe,

Sam

.

Ah yes, Jason!

But you had a two years start on Michael, and his batting average is slightly better.

When it does reach 21000 however, I’d like to have been the first to congratulate you, Michael Gilligan on such a stupendous effort.

Proffering that many Model Engineer posts since your first in April 2011 has to be not only a record, but also a magnificent and supportive achievement.

Keep up the good work.

Sam

Not my usual standard, but you know what I mean David.

With too many unforeseen issues, I'm no longer able to take this much further.

Anyway, who cares if it's cycloidal, involute, convolute, or even inefficient at this stage, you've got to start somewhere. A scrap of plywood and some panel pins comes to mind.

By the way, you're to be congratulated on the progress you've made since we began swapping notes.

I wish you well,

Sam

How dare I even suggest lantern pins David?

Sam

Adding additional support, particularly in relation to Fowlers Fury posts, as a ‘One-Clock-Expert’ I deliberately let rip with a spray can of stuff not only on my ‘one and only’ (unfinished) timepiece but that of the mechanism of a commercial longcase clock belonging to a late friend. It had stopped working so it obviously needed spraying according to the many claims of said stuff.

That was at least thirty years ago long before I knew better.

Stepping back even further … well you can read the paragraph for yourselves taken from a seven part article I wrote for Model Engineer............

Building John Stevens’ Skeleton Clock - Part 1 - #4526 – 22 Jan 2016

By about 1976, and because of a couple of technical setbacks, none the least being the balance spring, I shelved the project, literally. There it stood slowly gathering dust, rust, and some sort of hard, brown tarnish. A liberal dose of a well-known water-repellent spray seemed to have helped in developing this hard coating. It covered every piece of brass. Protection of the steel parts (especially the arbours) was also lacking. These latter issues only became obvious years later, when I was eventually encouraged to finish the clock and began to pull it apart.

When I finally finished the clock, I received a gift from an extremely generous clockmaker.

About 2ml each of three grades of clock oil. Enough to last centuries. So maybe you can find someone similarly generous?

Sam

Almost brass monkey weather here in Melbourne

Following on from Joseph’s observations Nick, the improved sharpness appears to relate directly to (left/right) staircase divergence.

Likewise, this ‘Focus Synergism’ improves the DoF.

How fascinating.

Sam

Nick, I must congratulate you on the rapid progress you have made in such an apparently short space of time. And, what better suited to us Model Engineer enthusiasts than ‘pictures at an exhibition’ (Mussorgsky).

Thank you also for going that extra step by including both stereo pairs.

As a (lucky me) crossed-eyed viewer, but never a BSA owner and with nothing to compare, I have to accept Michael’s comment about the forks.

From my ‘perspective’ there’s little I can add to Joseph and Frances insights.

While crossed pairs (usually) lock in almost instantaneously, I did struggle with your (heavily cropped) pair of the Stuart Turner No. 4 engine. Tracking front to back didn’t work well, but when they did ‘lock’, the sharpness was again, really impressive.

Joseph, I was surprised with your comment about the increase in sharpness. I can see clearly, what you mean. Could it amount to an overlap, a fractional sideways shift, or even a (near) doubling of the pixilation?

A great result!

Sam

After fifteen years of amazing attention to detail and craftsmanship, here's Mark Frank's final installment of the building of his Astronomical Skeleton Clock.

**LINK**

Not forgetting the immense skills of builder ..... Buchanan of Chelmsford, NSW, Australia

"Truly remarkable!"

See for yourselves, there nothing else I can say.

Sam

Thanks, Nick.

That’s another neat subject. Your front-to-back layout certainly makes the horse chestnuts jump-out.

Clearly, within the limits of dof (depth of field), extra depth adds dimensional impact. The cropping issue you mentioned made no difference to my cross-eyed view of things. I also feel sure others recognise how your efforts are showing us the way, and providing both parallel and crossed pairs is also very much appreciated.

Having plunged into his thread with a (3D) ‘branch line’ (back on Page 6 - 22/05/2020), I wonder what Raphael makes of all this.

By the way, in my neck of industrial Lancashire, conker contests were a rarity, but certainly preferable to clug feh’tin (clog fighting) .

**LINK**

Never actually entering into such a sporty pastime, I stopped wearing clogs upon leaving primary school.

Keep up the good work.

Sam