August 2021
Beginner
128 pages
5h 36m
English
Content preview from Make: Volume 78
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DRAWING A VACUUM
Thoroughly grease the bell jar lip and place it on
the bell jar plate, centered over the vacuum port.
The three-way valve controls the connection
between the bell jar, the atmosphere, and the
pump cylinder. Before you push the piston
down, the valve handle must be positioned so
that connection is between the atmosphere and
the cylinder. When you pull up, the valve must
connect the bell jar to the cylinder.
To draw a vacuum, follow this procedure:
• Start with the piston at the bottom of the
cylinder. Just before operating the piston, turn
the valve handle so the valve connects the
cylinder and the bell jar.
• Pull up on the
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.