Started by Dave, July 10, 2017, 07:26:50 PM
Quote from: Dave on September 06, 2018, 06:13:42 PMWill let you know whether it works or blows up when I power it up.
Quote from: hermes2015 on September 06, 2018, 06:28:07 PMQuote from: Dave on September 06, 2018, 06:13:42 PMWill let you know whether it works or blows up when I power it up.My thoughts and prayers are with you.
Quote from: jumbojak on September 16, 2018, 04:19:16 PMChisel from a saw blade. Interesting. I remember hearing that the first Jo blocks were made using Johanssons wife's sewing machine after it had been suitably modified to serve as a lapper.
Quote from: jumbojak on September 16, 2018, 06:52:36 PMThat's a good question that I couldn't find an answer to. I mean, it's simple enough to get an accurate flat surface but getting it flat and to a particular thickness is another matter when starting in a primitive metrological condition. I wonder when optical comparators came into use...What I find most fascinating about the really big metrology labs is the effort put into thermostats. They say that whoever has the best thermostat wins and some of those hvac systems are really, really cool.