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I have a great Casio scientific cLCULtor from the 1980s and still going strong. I've had many over hte years but the Casio is still the best. I must admit though there days I use tablet or PC based calculators of which there are a lot for different purposes. I even have older iPods (4 & 6 -...

Hi K2, It is also possible to use a small longitudinal pin centred on the circumference of the journal/crankpin. On another topic I lovedusing my slide rule and tookan advanced course in it's use - it's amazing what one can do with them. Unfortunately my old and trusty 11" Aristo-Darmstadt...

Hi, You mention 'pounce' is that similar to ground pumice that we used in our drawing office in the UK. The system in our drawing office in the 1960s was that the draghtsmen provided the general arrangement and detail drawings on paper with pencil for ease of correction. The drawings would...

Hi Richard, I'm not counting spaces, the decimal number system begins at zero, not one - just look at what number any measuring instrument begins. And to be quite honest I couldn't give a damn what happens on a hypothetical planet, I'm more concerned with this one. Having said that, as you...

Sorry Richard your counting method is incorrect. In the,decimal system the number 10 is the beginning of the next iteration of the decimal cycle i.e. 10 - 19. You only count 1 to 9, then 10 to 19, 20 - 29 etc there are 10 numbers in each repeating cycle, there are no'ends'. Hence the 10/9 in...

Hi mike, I have 2 almost identical inexpensive digital calipers which I purchased at more or less the same time. One retains it's reading, the other switches off completely. One uses a battery in around 6-8 weeks, the other's battery lasts for years (I just had to change but can't remember...

Using Stilsons and extension tube to remove stubborn nuts should be a no no for any real engineer. Long handled large spanners are used at every heritage railwayworkshop and I'm sure they would have loaned you one, with a bit of foresight.

Hi Richard, It's not £whatever" The 10/11 ratio just doesnt work on a Vernier scale. Regards and best wishes of the Yuletide festival, TerryD

Hi, You'd be surprised just how accurate it can be using spring calipers, in fact with a lot of practice I would say that they are accurate enough for 95% of my modelling work (mostly small live steam locomotives). As an aside I'm sure that you know it is possible to turn to within 0.02mm...

Hi Brian, With all due respect digital and dial calipers are not 'Verniers' they are simply 'calipers'. A 'Vernier' device uses two sliding scales which can be used, rather like a traditional slide rule, to establish accurate measurements (the capital V'' is to respect M. Pierre Vernier who...

An old fashioned internal spring caliper is great for measuring most internal diameters over about 20mm. aafter setting tem in the bore, they can be moved side to side with one leg static to ensure that you are on the exact diameter then, again with one leg staticswing the other leg back and...

PS P.S. I forgot to mention that somewhere on YouTube a guy showed how modified his digital caliper by adding a sort of thin plastic slider which isolated the battery after use, an idea perhaps useful for those who have problems with battery rundown. regards TerryD

Hi, I have several cheapo 150 mm digital calipers a couple of them have what seem to be everlasting batteries as when switched off they really are off. The other two remember the previous setting when 'off' and use battery power to remember that setting causing it to run down. However they are...

I too am an officionado of HSS tooling which is relatively cheap, use inexpensive grinding techniques to shape the tools to whatever shape I need and keeps a fine edge under heavy use generally. once shaped a quick hone with a slipstone and you have a perfect edge once again. I succumbed to...

As the Reptars were T Rex' they already had their day. They are still having their day on Antichthon but we'll never know for real.

As there are on all forums as well. But conspiracy theories make a change from reading comicso_O

Hi HTH, Sorry to disagree but here is ALWAYs flex and play in any system even in what appears to be the most rigid. That is one of the reasons why parting is so difficult with a front mounted tool when there is no allowance for flex and the tool submarines at small diameters, at least that is...

Hi Again, You could start looking on YouTube at 'This Old Tony ' video: TerryD

Hi, There is a lot of advice around the internet and YouTube, but I would get a copy of @The Amateurs Lathe' by L H Sparey. It is freely available via the normal online booksellers. Here is the advice from the South Bend Lathe Works 1934 handbook about setting the tool, the extra above centre...

Hi, I attended on Thursday. I'm sorry to say that I was a little disappointed compared with pre-Covid exhibitions there which I have attended. In the smaller hall where most of the club exhibitions were laid out as usual one wall which usually had exhibits on show was taken up by dining...