Member postings for Bill Davies 2

Me, too.

It's too glossy, but will I get used to it? The internal pages have a different quality, too.

Bill

Ajax, assuming that you would want to key the intermediate gears, they would have to have bushes with a key, through each pair of gears, to bear on the non-rotating shafts on the banjo. There would seem to be little benefit in keying the final gear to the leadscrew, if the previous gears transmit their power via pins.

Bill

I found Graham's long-winnded link to rust removal by electrolysis very interesting. It is a collection of multiple articles in one document, so it is a bit repetitive. Anyone skipping it should note to avoid using stainless steel anodes, as (for example) comments on using stainless steel on page 11. Stainless steel produce toxic chromates and must be avoided. Now, where's my rusty angle plate I made during my apprenticeship over 50 years ago?

Bill

Col21, since there are a lot of splines, I guess they are vee or involute, probably the latter as these can be hobbed like gears.

So, if you plan to machine one, you might check for curved teeth.

Bill

Try again...

Small lathe capstan

A simplified diagram of the capstan indexing and stops mechanism is shown on page 19:

Capstan and turret mechanism

Bill

Not identical text, but is this related to the article that Mike has mentioned? Dated 1941.

I know it doesn't answer Mike's question, but others may be interested in this article.

Bill

Awesome - awe meaning full of dread, giving us aweful. But I blame our neighbours for that one!

Premium - first (top) quality, or cheap? Used as a product description, I sometimes wonder.

There was a message that they would reopen in Spring 2022. The company seems to still be active.

https://find-and-update.company-information.service.gov.uk/company/08597118

Perhaps the domain name has been allowed to lapse?

Hi, David. FYI, you have accidently linked twice to the same site (Vevor).

Bill

Unless it is... Calliope

Choose your muse!

I've tried Nicolas' link three times. First time I had the server error message, next two times the web page opened.

Bill

And, indeed, here it comes...

https://www.manchestereveningnews.co.uk/news/uk-news/changes-smart-meters-next-month-23600303

So expect it to be dearer in daytime usage, but messaged as "cheaper at quieter times."

We're taking it all too seriously... I think Michael is referring to the (acceptable) apostrophe, whereas Anthony now refers to a comma (which, for me, also works well, as a pause). Michael loves his pedantry, and I enjoy it too.

Bill

On videos, I hear native Ukrainians pronounce it "Ki-yeev", but not stressed, so it might sound like Keev. On Phil's initial point, I did hear a Western presenter say Warsaw, then say "Var-sa-va", presumably the native pronunciation. Interestingly, there seem to be US journalists and presenters using "Mosc-oh" and not the Americal "cow". Still, nowhere near native "Muskva".

The Russian pronunciation seems to be taken as an insult by Ukrainians. I also note that placenames ending in "-iw" seem to be pronounced by Ukrainians as a "w" and not as "v". Given the size of the country and its history, I guess the may be marked variations around the country. And for the desire to take the country under Russian domination, we have to (partly) blame the (now named) Kyivan Rus, or at least Russian's view of their origins.

Oh, and I get annoyed when Putin becomes Pyootin. But that's me.

Bill

Huub, many thanks for linking your video - very detailed. And also for linking the spreadsheet for the button calculations.

Bill

The boring tool works on the same principle as a lathe tool cutting on the outside of the bar. The required 'rake' angle is determined by the tool and work material, and to some degree by conditions. The rake angle for mild steel is generally quoted as 12 to 15 degrees, other materials differ.

Referring to JasonB's diagram, grind that to the rake angle. I would disagree with Clive's diagrams as ar ake angle for cutting purposes, but would add a second 'clearance' angle to clear the bore, depending on diameter. This can be any suitable angle, as suggested by Clive's diagrams. The rake angle doesn't need to be very wide, a few mm for our purposes.

The top of the tool should also be ground at an angle, falling away from the cutting edge, perhaps as much as 15 degrees for mild steel, brass famously likes zero degrees. Don't remove too much material from the boring tool, enough to clear the work and allow swarf to collect (and periodically clear it out).

Bill

OK, my go! The only difference between cast iron and carbon steel(s) is the carbon content.

Bill

Sorry, JasonB, I misread your intentions, and I didn't know that the X3 was a similar mill.

Bill

The ZX45-type milling machines aren't knee mills, they have a heavy head (inc. motor+gearbox) that slide on the column. I use the quill for small vertical adjustments, and lock everthing except the moving axis (and put *some* locking pressure on that one). There can be some slight judder on the head coming down, less so moving up, but it can be adjusted before starting a cut. Mine is used infrequently and I give all the slides a good oiling before using it to minimise slip-stick friction. I might make Z-axis readout using a digital caliper, to get a better sense of vertical movements; I wouldn't bother on X and Y axes.

Bill