Member postings for Michael Gilligan

Looks very smart, David

Hopefully a moderator might rotate the picture for you, and also correct the subject line

… before muddle-engineers start looking for the clack

MichaelG.

Psst … <0.1

MichaelG.

… and, at the risk of stating the obvious : The key features of Loctite 601 are

• Medium cure speed
• 1-part product, requires no mixing
• Low viscosity, small gap filling
• High strength for permanent bonds
• Fluoresces for presence monitoring

That low viscosity is designed-in, to let it do one type of work rather well.

Other numbers, like 638, have much higher viscosity and will centre a loose-fitting shaft quite nicely with a ‘quick twirl’

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MichaelG.

This is [quite openly] a sponsored video but I think it’ ten minutes well spent:

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Edited By Michael Gilligan on 22/08/2023 07:19:40

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Nicely done

… ‘though I fear that thought ^^^ may come back to haunt you.

MichaelG.

Yes, they have a vested interest … but this is a reasonable overview: **LINK**

https://www.airius.co.uk/all-resources/the-dangers-of-stroboscopic-effects-in-the-workplace/

MichaelG.

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It could be very noticeable where long fluorescent tubes were installed, without baffles.

[ The flicker is out of Phase at the two ends … so if both ends are comfortably within the field of view, they ‘cancel out’ ]

Good practice in big rooms was to run groups of lamps on each of the three available phases.

… same smoothing effect as having a three-phase motor on your lathe.

MichaelG.

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I can’t prove it … but I presume that the curve at Fig.6 of that Vishay data-sheet is dominated by the optical filtering.

MichaelG.

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Says it all really ^^^

MichaelG.

Possible spec.for the receiver diode:

**LINK**

https://alltopnotch.co.uk/product/10-x-5mm-led-infrared-receiver-940nm/

MichaelG.

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Edit: __ and, assuming that we may wish to experiment with the optics, a proper data-sheet for the Vishay one

https://docs.rs-online.com/175a/0900766b80de9fc1.pdf 

Edited By Michael Gilligan on 21/08/2023 06:49:43

Whilst, obviously, we cannot be sure that all similar-looking items are identical … it is probably worth noting the description given here: **LINK**

https://www.ebay.co.uk/itm/262723014158

… and also the feedback:

“2 out of the 5 had faulty LED emitters, would trigger from the IR from other modules though.”

[ I’m guessing that’s a soldering problem ]

MichaelG.

Edited By Michael Gilligan on 21/08/2023 06:14:05

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That took a bit of finding: **LINK**

https://www.centerquic.com

… but it basically looks like an interpretation of Dan Gelbart’s idea

MichaelG.

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Don’t worry, Dave … Winter will be here before you know it

MichaelG.

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That’s strange … I don’t recall asking a question

MichaelG.

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There was a long and interesting discussion about laser centring devices on here a few years back.

… if you can’t find it, I will have a look later.

MichaelG.

Is this any help, Andrew ? **LINK**

https://www.instructables.com/Myford-ML10-Lathe-Oil-Nipple-Socket-for-Cone-Pulle/

MichaelG.

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Thanks for an informative post, Bill

MichaelG.

Thanks, as always, David

MichaelG.

Unfortunately:

• my stock of angle grinder disks went AWOL in the relocation to Wales
• access to the relevant cutting line was near-impossible

I ended-up using the Hitachi reciprocating saw [blunting two Starrett bi-metal blades in the process] and then had to use a 3/8” square file to make the final cut … it made a satisfying ‘crack’ as the tension released, but I still had to prise-away the metal with a crow-bar before I could pull the machine free.

MichaelG.

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Presumably a combination of ‘country of origin’ and claimed accuracy

’though I note that the certificate is unsigned !

MichaelG.

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