misfet: Greetings from overly sunny brisbane.

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mrburnette
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Re: Greetings from overly sunny brisbane.

Post by mrburnette » Tue Jan 16, 2018 5:35 pm

misfet wrote:
Tue Jan 16, 2018 9:12 am
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Ray, sparkfun have an interesting read on re flow. Their (and many others) preferred device is an electric skillet. I find this astounding as I have never seen one that can heat anywhere close to evenly.
<...>
From my readings, one should use clean, dry sand to provide a layer of heat distribution. One poster stated that white sand sold for fish aquiriums was perfect.

Ray

zmemw16
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Re: Greetings from overly sunny brisbane.

Post by zmemw16 » Tue Jan 16, 2018 5:52 pm

i've seen a 10mm thick lump of aluminium used in the same way. i suppose anything flat and really conductive would do the same. you'd probably need to clamp to stop bend, not a problem with sand.
rapidly cooling down either would be interesting.
stephen

misfet
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Re: Greetings from overly sunny brisbane.

Post by misfet » Wed Jan 17, 2018 8:10 am

In my imagination the stove top heats quite evenly across the glass. If this is not how it is in reality, then I also have a 400 watt halogen in the same shed..........

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