Here is a list of all the postings Mick B1 has made in our forums. Click on a thread name to jump to the thread.
|Thread: Unused Xmas Gift|
Milling inserts are always going to have to withstand impact as they come round into contact. I'd try starting with light cuts on alli, then brass, then mild steel progressively. If they do chip, they're not going to be very useful anyway.
|Thread: Is it a drone?|
One of the real 'uns looked quite big and buzzardy. Perhaps it decided the thing just looked too uncertain a prospect to try to kill and eat it...
As a demonstration that its engineer(s) have a thorough working understanding of bird flight, it's outstanding. Next bit will be to learn the fold the wings away on landing.
Not sure how far it advances any rational interests though. If it's developed for military reconnaissance use, one result may be that any ground-based campaign will want to wipe out bird life in its areas of interest, to prevent covert enemy surveillance.
|Thread: This weeks offer at Lidl|
Well, I think this is a first. I've seen offers of £2.99 down to £2.90, but nothing quite like this:-
The compressor and air pump are actually pretty useful, but I paid (IIRC) £19.99 for them on an intro offer when the new store opened in Leek.
You really would think that staff might actually read what they're putting up? Or do their conditions make them too cynical to bother?
Edited By Mick B1 on 03/02/2019 17:20:05
|Thread: Article in latest ME|
There's already been a thread on this, here: **LINK**
|Thread: Questions: Myford ML 10|
If it is, you'll get a root diameter undercut from the delay between the clutch decoupling and you stopping the spindle. In many cases this is OK, but in pressure-bearing components often not - the thread is supposed to taper out to full diameter without an undercut.
But if the spindle does more than one rev to produce one rev of the leadscrew driven gear, even if you have a single-tooth dogclutch, I'm struggling to see that you'll automatically pick up the thread correctly on the next pass, because only the rotational relationship to the final drive is fixed, not to the spindle.
And back to you and any others: Is my reasoning correct or I'm missing something?
Someone earlier suggested putting the clutch between spindle and geartrain. I think that'd work, but it's a helluva different proposition to achieve.
Edited By Mick B1 on 01/02/2019 10:14:47
Even if you left the halfnuts engaged, you'd break the rotational relationship between spindle and leadscrew. Implications of that don't seem to me to make life any easier.
I think it'd be quite a lot of work - though I'm thinking from the WM250V point of view, not 280.
You'd have to lose or substantially mod the telescopic leadscrew cover to make room for it.
Plus the only reason I can think of for doing it - the purpose I used it for when I had a Speed 10 (ML10 derivative) - is to have a handwheel and dial on the distal end of the leadscrew for precise setting of saddle position. But if you add one o' them, you'll then be stuck with manual crossfeed for facing or milling unless you can be sure to remember to lock the saddle and disengage the halfnuts before re-engaging the dogclutch. All seems a bit much to hold in the head to me, with a bit higher risk than I generally like.
|Thread: What Did You Do Today 2019|
|Thread: Milling on the Chester Craftsman|
I use a Warco WM250V. I adapted their vertical slide baseplate to take my Myford double swivel milling slide - it fits the 2 tee slots in the cross slide top. I've been running this machine nearly 4 years now and I'd guess the slide's in use about 40% of the time, for milling and coordinate drilling etc.
|Thread: Last Night's Astro Image|
Aha, thanks. I could recognise that once I'd figured out how to zoom the image.
I read somewhere that astronomy splits into the study of the Crab Nebula and the study of everything else...
|Thread: Nickel/German Silver|
I have a couple of top-grade early 20thC terrestrial telescopes made by Negretti & Zambra in nickel-silver. Their contemporary catalogue claims that the additional strength of NS tubing as compared to brass allowed a weight reduction of 9 and 13 oz. against the same models in brass.
For something you might be carrying around for hours, that counts.
Edited By Mick B1 on 29/01/2019 19:52:02
|Thread: Last Night's Astro Image|
Ok, I recognise the top one as the Orion Nebula with the Trepezium above it, but what's the second? It looks less regular than the Hercules cluster, and too dense for the Triangulum irregular galaxy.
|Thread: Milling slide for sale|
Edited By Mick B1 on 28/01/2019 21:09:00
Well, that's what I thought, but it seemed awf'lly negative...
|Thread: Micrometer woes|
The instruments that I have that have lasted longest are the ones that I just leave lying around on the machines. That promotes their continual use and prompt cleaning and maintenance. My 0-1" mic dates from 1976, and I've no idea how old my M&W Vernier protractor is - a friend gave it me spotted with crud and rust from being kept in a case. I ScotchBrited it off with WD40 and it's never had the opportunity to come back since. The mic is a Mitutoyo and still works pretty well to a couple of tenths on its Vernier barrel, though it lost its metric mechanical counter about a month from new.
I think the tales of woe above confirm my view that it was just well I lost the boxes!
|Thread: What type of compressor do you use to power your engines?|
I've posted this before, but it shows an engine with a moderate swept volume (7/8" bore x 3" stroke) running from a 12V tyre inflator. The battery has since given up the ghost, but Lidl's handheld cordless compressor gives the same result.
I put a 5/16" thread on the inlet pipes for all my models so that tyre pumps will fit. The noise is enough to make the grandchildren jump.
Edited By Mick B1 on 26/01/2019 09:23:30
|Thread: did u see|
Not much of a return on 18,000 hours' work. That's about 9 years full-time.
|Thread: US/UK Lexicon|
That's why I say you need to know your audience and aim at the balance of interest and current knowledge you think they have. If they ain't got neither they ain't fit for the job.
You have to know the expected state of knowledge of your target audience. You have to tell them what they need to know and point out what they need to check they've got right. You don't want to jam their brain with noise and make it hard for them to filter out the signal.
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