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Just wanted to add my encouragement to this effort. I've yet to build a printer for a number of reasons including a lack of clear and concise build documentation.
As a mechanical engineer the mechanical assembly doesn't scare me to much. I am certain that I could muddle through. Without my mechanical background I wouldn't have bothered being interested beyond the first half-hour. This guide
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Tyro
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General
Now that matweb is back. ..
plonly one porcelain is listed - no clue if it is representative.
9.50e-6/K
Bleh matweb sucks for glasses appearently.
Here is a comparison note the factor of 2 from from soda-lime (ordinary) to borosilicate and factor of 8 from there to quartz. The borosilicate should be good enough and is a bunch cheaper than the quartz.
Tyro
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Tyro
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General
The glass or tile or any material breaks due to stresses caused by thermal expansion. The hot areas want to be bigger and the cold areas want to be smaller. In a brittle material, when hot and cold areas are close together, these areas pull and push against each other. This causes tension or compression in the part. Tension or compression caused by heat is called thermal stress.
Now some i
by
Tyro
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General
On the topic of induction heating...
Any material which is electrically conductive can be inductively heated. Here is why: induction heaters consist of a coil which is subjected to a high frequency AC current. The AC current creates a magnetic field. The magnetic field induces an electric current in the part to be heated (but only if it is electrically conductive). The induced current experie
by
Tyro
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General
Hmm that's about what I suspected you intended by the word, but I still didn't see a reason for it. Then I realized that we had two interpretations of the picture. I believe, and I'm sure you will correct me if I'm wrong, that you saw the large table moving up and down within the plane of the image - I do as well - and you see the small table moving left and right within the plane of the imag
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Tyro
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NoobMan Wrote:
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> Since the slide is between the two plates, like
> that, then the surfaces of the two ought to be
> rectificated in uM (microns) range
I'm not sure what you mean by 'rectifacted'. I checked but that didn't help.
Care to expand my vocabulary?
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Tyro
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General
TheCase Wrote:
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> Heat does rise, after all.
Actually, heat does not rise. It moves from high temperature to low temperature via path of least resistance.
Low density air (because it is higher temperature) rises above high density air (low temperature). This is heat transfer by natural convection.
The heat transfer from hot PCB tr
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Tyro
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General
Ok time to throw some theory at this discussion! Since I'm lazy I will be guestimating on geometry, alloys, and change in temperature. Feel free to correct me if I am horribly wrong.
First, www.matweb.com has thermal expansion coefficients.
Aluminum 6061-T6: 25.2E-6 1/K
free machining brass C36000: 20.5E-6 1/K
Oxygen free pure copper C10100: 17.7E-6 1/K
dT=250°C
D_CuBr=5.56mm
D_BrAl=7.94mm
Whe
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Tyro
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General