Better shape than your underwear LOL
do they grind it like machinist's surface grinders?
To mill and shape glass, they use some machinery that is used in metal machining(Blanchard and edgers with diamond wheels). To finish surfaces you grind with abrasive powders on usually cast iron ‘laps’ then polish using either polyurethane or pitch covered laps. Any Pentium chip powered computer used some of the projection optics I made to print the circuits on silicon wafers. That was back in the Stone Age…
I would be proud of those jars. I got a long way to go…
That reminds me I need to start looking for some more jars. I hate to buy new ones. Some folks have tons of them in their attic. I left all mine in Ga when I moved. The last harvest, I had to resort to pasta jars and jelly jars as i ran out. Yard sales, estate sales and the thrift shops sometimes has them. The jars do take up a lot of room tho and my collection is getting bigger. Maybe the bags are a good way to go…
Dang Fogey, you smoking that freak weed?
The you double the malfliod clutch to side wane the parametric fam.
Sober as a saint…
Only if the rotator spline is out of alignment…
Yes, I was thinking the same thing. I have purchased a dozen and a half of the 1/2 gallon wide mouths, trying them next. All my jars seal well.
Wow. You could scrape that out or dissolve with alcohol! After each go round, mine get a trip through the dish washer
