AES
Established Member
Thanks "TF". I look forward to seeing the video.
I've got a 600 x 600 x 100 granite block that needs calibrating if you need some practice with that new kit you've boughtOk, how's this for a haul of cool Metrology nerdiness. Spur of the moment eBay buy - all the indicator stands and v blocks and angle plates you could ever want, a Baty shadowgraph and a sigmasize analogue comparator gauge. Mainly I wanted to have a play with the shadowgraph - more on that when I get chance. The sigmasize has blown me away though - firstly that it worked when I turned it on, secondly by how accurate it is. You can adjust the +/- limits so the light goes amber or red if it's out of tolerance, it's metric or imperial, and it measures down to 0.00015 of an inch/ 0.005mm. Which is insane. The gauge block in the pictures is almost perfect, but you can see the difference in it's size if you warm it up in your hand for a minute. Amazing!
I sold an autocollimator earlier this year!
Yeah, quite right Alpha-Dave, but my point was (along with several other members posting here I think) is that those sorts of things - which need such tolerances - are not usually made in what most of us here call a "home workshop"!!
I wouldn't be so sure, there's plenty of people out there doing that kind of thing in home workshops, for my sins I've built two machine tool spindles in a home workshop. It does reach a point of your hobby being "Precision" though...
If you're interested in the kind of loons who would do such a thing, google Stefan Gotteswinter to see an offensively competent German man (of YouTube fame) operating a small toolroom as his hobby from a home workshop.
It's very heavy, hideously complicated, possibly broken, obsolete and glorious. Just my cup of tea really
A DSG is certainly the fantasy big boy lathe.
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