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Member postings for Enough!

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

Thread: Covid19 - Overseas Subscriptions
05/06/2020 16:10:01
Posted by duncan webster on 05/06/2020 13:44:33:

I keep my paper copies of ME for about a year, then scan the interesting bits and bin the rest.

The problem with that (for me) is that today's uninteresting bits are tomorrow's interesting bits.

Thread: Site with interesting Papers on many subjects
04/06/2020 17:22:39
Posted by Neil Wyatt on 04/06/2020 15:34:23:

I was impressed by one who lassoed the tiger first time. The video stopped just as the rope tightened... I trust he was OK!

How did you know the tiger was male ?

dont know

Thread: Non standard taps - what are they ?
04/06/2020 01:56:36
Posted by DC31k on 03/06/2020 17:28:30:

With regard to the thread angle, you might take a very close up shot, very square, and put into your album.

It can then be imported into a CAD program and lines overlaid to estimate thread angle (modern day poor man's optical comparator).

Or just print a section of the photo big on your printer and use a protractor.

Thread: Macro-photography
04/06/2020 01:39:37
Posted by Sam Stones on 03/06/2020 20:40:03:

PPS - Bandersnatch, I had to look up 'Windows Violation'. Guilty too!

 

Windows Violation simply means that some parts of the stereo view protrude forward of the stereo window. Purists tend use the term a bit pejoratively maintaining that it shouldn't be allowed.

I don't think it hurts occasionally - it can work quite well on some shots - but it can be overdone. It happened by accident on this one because of a rushed cropping job on the originals and doesn't work particularly well.

t was a stock-in-trade with old 3D movies and gained a (deservedly) bad reputation.

Edited By Bandersnatch on 04/06/2020 01:40:56

03/06/2020 01:41:25

Found this while browsing through some old (personal) pics. Parallel viewing (complete with window "violation" )

berries-lr2.jpg

 

 

Edited By Bandersnatch on 03/06/2020 01:47:11

Thread: Arduino/Stepper Motor Dividing Head
02/06/2020 15:09:49
Posted by SillyOldDuffer on 02/06/2020 13:35:30:

More difficult to install the Arduino IDE, but once done it's straightforward to plug in an Arduino board, and compile and install an existing program to run on it. And because the Arduino has many modules, the hardware side of a project can be kept simple too. Low cost in terms of human effort, allowing users to concentrate on matters important to them rather than learning another skill-set. There's much in favour of simplified electronics and micro-controlling for customers who aren't interested in that side because the learning cost is so high.

Incredible things, Arduinos. You can even make a Wireless Tin-Can Telephone.

Huh?

surprise

Edited By Bandersnatch on 02/06/2020 15:10:13

Thread: Coronavirus
02/06/2020 14:45:05

I was going to post this link in the current macro thread but I didn't want to regurgitate this conversation in that thread. So ....

**LINK**

Thread: How easy is it to make a chain sprocket?
31/05/2020 18:26:17

If it helps, here's a picture of the original Q plus a close-up of the large sprocket area (which clearly shows the skip-tooth profile):

 

original-q.jpg

 

large-sprocket.jpg

Edited By Bandersnatch on 31/05/2020 18:27:23

31/05/2020 01:54:40
Posted by Brian H on 30/05/2020 18:21:31:

I need to make a pair of sprockets to suit 1/4" pitch chain and looking at various sites, I can buy the chain but not the sprockets.

sdp-si sell roller-chain sprockets if you can find something suitable.

Thread: Optical Chucks
31/05/2020 01:42:15
Posted by John Haine on 30/05/2020 15:18:02:

Hemingway do a kit for a centering microscope which would do what you want,

There was also an article about that kit in MEW-106 (May-June 2005).

Thread: Macro-photography
30/05/2020 19:07:30
Posted by Raphael Golez on 30/05/2020 18:09:08:

No problem veering from topic gents. I really don't mind in fact it would be great to see the branches of our discussion. That is just how it is.



OK, Raphael, thanks.

In that case, following along from Sam's PCB pics (short baseline .... hypo-stereo) someone might want to try the opposite: long-baseline hyper-stereo. This is used for relatively distant objects (trees, buildings, mountains etc) where the two pics are taken many feet apart. (Needs to be a static subject, of course). I used to do a fair amount of this at one time and it can be a lot of fun.

Some nice examples here. Scroll down and pick parallel or cross-eyed (or indeed anaglyph) as appropriate

30/05/2020 18:32:24

Posted by Raphael Golez on 30/05/2020 18:16:01:

So to play a short game. Can you guys identify exactly the following close up pictures. See if you can all guess it right. Labelled A to E.

I would guess they're from banknotes .... probably UK ones which I'm not very familiar with these days. B .... suggests Churchill to me and A ... the Queen?

The rest, I haven't a clue.

30/05/2020 17:14:54
Posted by Michael Gilligan on 30/05/2020 15:29:41:

However : Re-reading, more carefully, what you wrote to Sam ... I think all you were saying is that [like me, but unlike Sam] you free-view ‘parallel’

Now I'm confused. It seemed to me that Nick said he could see Sam's (cross-eyed) clock view instantly, but had to (of course) swap the images to see them in a stereoscope.

That suggested to me that Nick free-views cross-eyed naturally but needs the stereoscope for parallel viewing.

Me with stereo glasses on: cool

[ Very interesting topic but can't help feeling we ought to take a lot of this stuff to another thread out of respect for Raphael and others. ? ]

29/05/2020 16:09:49
Posted by Raymond Griffin on 29/05/2020 13:47:32:

Unable to find crystal as 3D pair, perhaps try this pair. Shows a white blood cell adhering to the wall of a blood vessel in scanning electron microscope.

Super kewl Raymond !

yes

28/05/2020 18:31:44
Posted by Martin Connelly on 28/05/2020 17:35:46:

I had not trouble viewing the 3D image, too much messing about with SIRDS.

SIRDS .... I'd forgotten about those. I could always drop straight in (parallel viewing again). I just tried some on a web site and find i still can (drop straight in) so all is not lost after all.

[ Years ago, my sister could always see them easily but her husband could not however hard he tried. He always swore that we were putting him on - that the whole thing was a huge joke at his expense. He got quite grumpy about it. Then one day he saw it. The look on his face was unbelievable! ]

28/05/2020 18:22:45

No problem Michael !smiley

28/05/2020 16:28:24
Posted by Michael Gilligan on 28/05/2020 09:29:52:

No, not just you ... that’s a direct result of parallel-viewing a cross-eyed pair

Ah, but I wasn't. As noted, I download the original image and flipped the pair before parallel-viewing.

Thread: albums
27/05/2020 23:03:19
Posted by Neil Wyatt on 27/05/2020 19:20:05:
Posted by Bandersnatch on 27/05/2020 16:19:30:

FWIW, I typically resize my pics to 8" x 6" @120 pixels/inch which works for me and gives a decent size picture for the user if he clicks on it in a post.

The system automatically resizes them to 1200 pixels in the longest dimension when you up-load, and displays them as 600 in the largest dimension by default (you can right click and view to see them larger).

I'd heard that before, Neil and the values I'd used were an attempt to avoid some unknown 3rd party software rescanning/resizing my (carefully prepared wink ) pics. Particularly in the upward direction where pixels have to be invented.

Seems I'm failing.

I could resize to 10 x 7.5 x 120 or perhaps 8 x 6 x 150 but would I be wasting my time .... would they be "processed" anyway?

(And to answer the obvious question .... no I'm not really that bothered anyway. It's mostly a theoretical exercise. Time is hanging heav(il)y

Thread: Macro-photography
27/05/2020 22:48:09
Posted by Neil Wyatt on 27/05/2020 19:34:50:

Just display the image quite large on your monitor (right click and 'view image', relax and cross your eyes so the two planet images overlap in the middle.

No way I could ever do cross-eyed (nor much of wall-eyed these days) so I copied the image, flipped the views and looked at them with glasses.

Interesting that the feature near the edge at the 1 -2 o'clock position looks like a hole. I think it's just the colouration ... light on one side and dark on the other that gives it a similar appearance to a side-lit crater.

Or maybe it's just mefrown

Thread: Space X launch
27/05/2020 22:23:00
Posted by martin perman on 27/05/2020 20:50:12:

if you search SpaceX on you tube to can watch the launch live.



... or NASA Live carries it

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