The purpose is to move water. A bubble source in one place can do that.? Dont overthink and overengineer.
Seriously, swabbing or rocking the container does a pretty good job.
Sent from my T-Mobile 4G LTE Device
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-------- Original message --------
From: Jim Higgins <HigginsJ@...>
Date: 3/23/19 20:55 (GMT-06:00)
Subject: Re: [homebrewpcbs] Preparing Cupric Chloride Etching Solution
Received from Dave at 3/23/2019 11:41 PM UTC:
>Plastic tube will work and it's easy enough to drill holes in it. But can't
>we drill holes in glass tubes with our carbide bits?? Or would we break more
>of them than its worth? If a person were to try that, what size carbide
>would be strong enough without being excessive in size I wonder?
I have no idea, but for sure a fairly tiny hole can pass a lot of air at a
fairly low pressure, so unless the holes are really really tiny the hole
that's highest in the tank (least back pressure) will emit most of the air...
defeating the purpose of having a number of holes.
I've arrived at the point that were I starting out I'd just use a straight
piece of rigid glass or plastic tubing and be done with it. ;-)
Jim H
