ok, thank you my friend. I’m glad I only did it a couple of times then.
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I’m testing a different material for the lower bushing. Teflon is super slick (low coefficient of friction) and withstands 4 to 500 F but but is soft and has very little mechanical strength. The new material is nearly as slick and has very high mechanical strength plus can be used continuously up to 480 F. I want to test it awhile though. I’ll let you know.
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Is there something holding the body of your RTX steady?
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I can answer for her. The round disk with the hole in it holds the entire thing steady including the RTX. It is just slightly bigger than the GC tube so it will lift in and out easily. Lift up and place the bottle under it. Once your height is set no other adjustments are necessary. Instead of aluminum I am using nylon now so that it won’t scratch the tube. It is very sturdy. Stands will be available likely this weekend but I have only made 4 and one is spoken for.
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Same here… lmao!
Thx St3v0, I did but the liquid level fell below the top hole. I had to tip the bottle.
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There is a Teflon bushing inside the tube that is 1 inch up from the bottom. I bore the tube 1 inch up and that creates a stop for the bushing where it won’t raise higher. As long as the bushing is kept wet, you will be fine. The first vent is 1 1/8" up and above the bushing. I would rather that you have the liquid up to there but its purpose is not for lubrication. It is to stop liquid from being pulled higher. When the rotor is turning, it will pull liquid upwards. There is a tiny clearance between the drive shaft and bushing and that is where the lubrication occurs. The vent releases the vacuum created by the rotor.
Should the bushing or anything else fail, I will replace it free of charge. Just please don’t run it outside of liquid. (My internet connection keeps going in and out)
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Soooo, point to all GC users:
If you use it outside of liquid, Dan loses his internet.
Duly noted. 
(Please be kind to his internet!)
/sorry bud, couldn’t resist.
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Does “up to there” mean it would be below the surface of the liquid. That’s how I have understood it.
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There are 6 holes at the bottom of the tube. Up from there are 2 vent holes. The first is 1 1/8 inches from the bottom of the tube. The second is approximately 3.5 inches up.
Ideally your liquid level will be up to the first vent hole.
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LOL. A reasonable conclusion from what I said. You got me. 
I kept editing trying to post. So do I get a new badge for the dumb statement of the day?
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Meaning your liquid should cover the first vent hole? What does “up to” mean? You’re driving me nuts, lol! Is it me?
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I’ve been submerging the first vent hole. Is that okay?
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Yes that’s perfectly alright and most of the time is what you will do… 10 mls is awfully small for this device but it can be done. The liquid level should always be at least to where it’s shown in the pic.
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Okay, finally, thank you for clarifying. Glad you’re back online 
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Hi Sprksfly…Lol, am I supposed to use ear protection when running the GC? Anything at medium speed and above my ears are ringing. I use the B&D RTX on a stand. I put a mouse pad under the base hoping it would absorb the sound. I think it’s the RTX?
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(I use a dremel 4000)
Thank you KiwiPete. For a minute there I thought I was losing my hearing. Nobody ever mentioned it before.
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