Here is a list of all the postings blowlamp has made in our forums. Click on a thread name to jump to the thread.
|Thread: West Yorkshire Police|
A different Martin!?
Did the airbag warning system detect an acceleration from the rear impact, rather than a deceleration, thus deciding not to deploy?
|Thread: 2mm endmill help|
How close is the fit between the parallel part of the collet and the bore it locates into in the spindle?
I found with my Dremel type hand tool that there was quite a bit of clearance here which caused significant runout of the cutter. I made new collets that fitted the bore closely and it helped tremendously in reducing runout. I used a drill shank to 'measure' the bore size.
|Thread: Change to the Code of Conduct|
The only thing missing I can think of at the moment is the ability to upload and share files like DXF & ZIP.
The option to share can be a great help if you get stuck with your CAD/CAM system or something.
I agree, it is a very knowledgable & active forum and I think that's why we stay and contribute.
The purpose of my few posts was only to serve as a reminder that all parties need consideration for the site to keep working - so it's not only MyTimeMedia & its advertisers that are important, the customers and participants are too and I wanted to bring that into the conversation.
For instance, it's very often the case that forum members recommend products sold through businesses featured here, so in effect, we are sometimes unpaid advertisers and should be appreciated as such.
When all is said and done, this site could probably survive without outside advertisers, but not without its members, which is the thing I think is most important to remember.
You have a difficult balancing act keeping advertisers and customers/contributors happy, no doubt about that!
How do you know that - you don't think purchases/digital subs of the magazines advertised here could go towards running this site?
What kind of profit do you think MyTimeMedia and their advertisers would have if it weren't for the other "three groups" that populate this place?
Some might think that is the forum contributors, magazine purchasers and digital subscribers.
How would I ever know for sure those businesses fully comply with anything? Is Banggood OK to link to?
|Thread: Boxford 280 spindle nose runout|
They did Andrew, it was quite similar to a Harrison M250.
It's strange that the flat face is so far out of plane because it would have been ground along with the small tapered register. That small internal taper was probably used to mount the spindle between centres when it was ground.
If I remember correctly, these two surfaces are designed to come into contact one after the other - so cone first followed by the flat surface/register. I think the cone is a very small interference fit of maybe ~ 0.0001" to ensure centralisation of the chuck. It would be hard to skim that surface and maintain the right kind of fit.
Edited By blowlamp on 22/06/2020 14:43:16
|Thread: Pesky Government Announcement!|
Dear God. That we have been so conditioned into thinking this is acceptable. Strangers turn up at your home demanding to know what you've been looking at. Truly frightening.
As far as I am aware, there has never been a conviction using 'evidence' from a so called TV Detector Van.
|Thread: Convert PDF to DXF?|
Download the 30 day trial of MoI here
Open your PDF into MoI and then Save or Export it as a DXF.
Failing that, send me your PDF and I'll do it for you.
|Thread: Myford S7 Cutting Barrel Shaped Cylinders|
Yes I did. What I found disappointing was the poor grinding as shown in the third picture - no way would Myford Nottingham have let that out.
They have couple of beds on ebay at the moment - take a look at the third picture here
It doesn't look very good to me.
|Thread: Can you guess what this object is?|
It looks like 4 half cones placed back to back and joined.
|Thread: Another way to cut a face groove|
I'd have used my milling machine and rotary table, but only because I don't have a Quick Step attachment for my lathe.
Edited By blowlamp on 06/06/2020 12:20:57
|Thread: Myford S7 Cutting Barrel Shaped Cylinders|
Once you have the saddle upside down on your mill, you should be able to use your DTI to pick up on the unworn face that the gib screws come through. That should put you at the same starting point Myford had when they made it, then you can compare how far out the worn face is.
The 'black art' is pattern scraping, where you see all that lovely decoration on slides and tables, but it isn't what you need or would be doing anyway.
All you need to do is remove small areas to get a better fit - you're not concerned about it looking pretty, it just has to be functional.
If you can get a decent SHARP scraper, you'll soon see how easily it will shave off thin layers of metal. All you do is make parallel cuts through the high areas ( indicated by a concentration of 'blue' ) in a criss-cross pattern - don't fixate on tiny little bits of blue that remain or you'll be there forever, simply re-blue and repeat until you have a covering of spots all over. Don't expect the bit you're scraping to ever be a solid wall of blue, it'll only be dots.
As the lathe bed is chamfered don't worry about milling into the root of the saddle as there's no contact there anyway.
Edited By blowlamp on 03/06/2020 17:51:21
It should be fine if your mill is in good fettle and you use a sharp tool. Myford themselves milled the vertical shears of their lathes rather than grind them.
Take your time in setting it up and take the lightest of skims to remove the wear.
For that particular face, it would be nice to have it very slightly hollow in the middle so as to ensure it doesn't rock in use. At the factory they just scraped the area a little more heavily to get this effect, so it would be good if you could do similar, even if it was by gently filing.
Mike, do you live in Nottingham?
Martin Kyte Said:
"The number of actual deaths stands at 40,000 whic would give you 4,000000 infections or around 6% of the population which is in line with the antibody surveys currently being carried out.
Thus the effectiveness of the lockdown is seenby dividing the actual deaths with lockdown by the estimated deaths without lockdown which woud be 40,000/666,000 = 0.0006 or 0.6%.
Put it another way because of the lockdown, so far we have had 0.6% of the deaths we could have had if we had carried on as normal which is a pretty good argument for doing as we did."
So if 40,000 deaths equals 0.6% of the official estimate then that estimate must have been 6,666,666 deaths because 100/0.6 = 166.666... Therefore 40,000 * 166.66 = 6,666,666 predicted deaths in the UK alone. At the moment there aren't even that many confirmed cases worldwide and with only 371,000 deaths worldwide.
Your argument implies 6,666,666 - 40,000 = 6,626,666 lives saved in the UK because of lock down restrictions, which would be phenominal if true, but this estimate is a guess and if it's the best guess of Prof Neil Ferguson then don't expect it to be anywhere near reality. His guesses are so inaccurate even he doesn't heed them, hence his departure from the scene.
I admit I don't know how 6,666.666 people were predicted to die in the UK if the population wasn't locked up for more than ten weeks. Maybe I don't understand the theory of lockdown.
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