4 ms·
That's super cool! What are you making it out of? I always wondered how they made the markings on the high quality slide rules of yore. Were they engraved? Wer
by mixedmath 3y ago
That's super cool! What are you making it out of?
I always wondered how they made the markings on the high quality slide rules of yore. Were they engraved? Were there machines that would scribe them? Now we might laser engrave, but that feels too recent. Maybe some sort of acid etching? I don't know!
- jacquesm 3y agoFor now out of wood, it will be 'oversized' so I get enough accuracy because I can only inscribe 0.4 mm lines, though I have an idea on how to improve on that for just this job. The ones that I used to have were plastic and the lettering seemed to have been superimposed on top of the base material, Pickett's were definitely printed, not engraved. But older ones were engraved and I'm super curious about the process they used, I'm imagining a reversed pantograph or something like that.