What's the smallest kind of screw a lab could get a hold of?
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What's the smallest kind of screw a lab could get a hold of? What other fasteners could I work with to secure something just over 1.5 mm thick? I'm inclined to use mostly joinery approaches to keep the machining straightforward, but there will have to be a final securing ... something.
This yellow bit has channels of liquid in it that need to stay put when the outer bit is put under high vacuum (TEM column). I was thinking of using a coating on the holder where the channel outlets will sit to ensure a good seal, but I'm not at all confident that'll survive vacuum. But it's too small to fit any kind of O-ring I can find commercially available. Suggestions?
Also, look, I'm way out of my depth here so if anybody wants to point me to a textbook or other learning material on engineering on this scale, I'm all ears. #CAD #machining
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What's the smallest kind of screw a lab could get a hold of? What other fasteners could I work with to secure something just over 1.5 mm thick? I'm inclined to use mostly joinery approaches to keep the machining straightforward, but there will have to be a final securing ... something.
This yellow bit has channels of liquid in it that need to stay put when the outer bit is put under high vacuum (TEM column). I was thinking of using a coating on the holder where the channel outlets will sit to ensure a good seal, but I'm not at all confident that'll survive vacuum. But it's too small to fit any kind of O-ring I can find commercially available. Suggestions?
Also, look, I'm way out of my depth here so if anybody wants to point me to a textbook or other learning material on engineering on this scale, I'm all ears. #CAD #machining
This is a question for @MelissaBearTrix : inside watches there are absurdly small screws.
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This is a question for @MelissaBearTrix : inside watches there are absurdly small screws.
You should be able to get down to 0.8 mm screws off the shelf
I can get or make screws from 0.2 mm up
Hugz & xXx
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You should be able to get down to 0.8 mm screws off the shelf
I can get or make screws from 0.2 mm up
Hugz & xXx
Now I'm curious to see the wrench for the bolt of a 0.2 mm screw
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Now I'm curious to see the wrench for the bolt of a 0.2 mm screw
Not a bolt it's mostly for balance stud holder ... Down towards the bottom of the image circled in purple
Hugz & xXx
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What's the smallest kind of screw a lab could get a hold of? What other fasteners could I work with to secure something just over 1.5 mm thick? I'm inclined to use mostly joinery approaches to keep the machining straightforward, but there will have to be a final securing ... something.
This yellow bit has channels of liquid in it that need to stay put when the outer bit is put under high vacuum (TEM column). I was thinking of using a coating on the holder where the channel outlets will sit to ensure a good seal, but I'm not at all confident that'll survive vacuum. But it's too small to fit any kind of O-ring I can find commercially available. Suggestions?
Also, look, I'm way out of my depth here so if anybody wants to point me to a textbook or other learning material on engineering on this scale, I'm all ears. #CAD #machining
I could fit 1 mm diam square-profile O-ring cord around the sample block if I count on compressing it in to half its width (other two dimensions unchanged) when sealed up properly. Does that seem reasonable? I worry about how little metal would be surrounding this, even if it's stainless steel.
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Current* conditions near Alpena, MI:
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@Tamami A dumpling sky 😆
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@sunumbral My favorite is when a full moon peeks through holey clouds though!
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@Tamami Heading our way, hope the sky remains holey, lacey, my vocabulary is lacking. But there are some gaps in the clouds so far...
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24 hours later, another good shot.
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@evan did I decide or did the Fediverse decide for me? Does free will exist?
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Single choice! You can only afford one!
