Hello List!
This is our weekly announcement for the next Mumble Sessions on Sunday
2021-08-29 @ 18:00 UTC.
Please join us as usual at our Mumble Server murmur.libresilicon.com at Port 64738, the Channel is IC.
We like to follow-up our topics from mumble sessions before.
Regards, Hagen.
Hello All,
I cannot participate today. I am involved in the cleanup of a technical failure at home.
Regards,
Ferenc
On 28/08/2021 05:40, Hagen SANKOWSKI wrote:
Hello List!
This is our weekly announcement for the next Mumble Sessions on Sunday
2021-08-29 @ 18:00 UTC.
Please join us as usual at our Mumble Server murmur.libresilicon.com at Port 64738, the Channel is IC.
We like to follow-up our topics from mumble sessions before.
Regards, Hagen. _______________________________________________ Libresilicon-developers mailing list Libresilicon-developers@list.libresilicon.com https://list.libresilicon.com/mailman/listinfo/libresilicon-developers
Oh. Okay. I hope it's nothing dangerous... Good luck!
Cheers David
On Sunday, August 29, 2021 3:24:51 PM WEST Ferenc Éger wrote:
Hello All,
I cannot participate today. I am involved in the cleanup of a technical failure at home.
Regards,
Ferenc
On 28/08/2021 05:40, Hagen SANKOWSKI wrote:
Hello List!
This is our weekly announcement for the next Mumble Sessions on Sunday
2021-08-29 @ 18:00 UTC.
Please join us as usual at our Mumble Server murmur.libresilicon.com at Port 64738, the Channel is IC.
We like to follow-up our topics from mumble sessions before.
Regards, Hagen. _______________________________________________ Libresilicon-developers mailing list Libresilicon-developers@list.libresilicon.com https://list.libresilicon.com/mailman/listinfo/libresilicon-developers
Libresilicon-developers mailing list Libresilicon-developers@list.libresilicon.com https://list.libresilicon.com/mailman/listinfo/libresilicon-developers
Nothing dangerous, just the f... antastic pressure relief valve of the fantastic boiler set itself off with no apparent reason, so the whole heater room was flooded (plus no warm water for days).
BTW, what did I miss on Sunday?
Regards,
Ferenc
On 29/08/2021 16:26, David Lanzendörfer wrote:
Oh. Okay. I hope it's nothing dangerous... Good luck!
Cheers David
On Sunday, August 29, 2021 3:24:51 PM WEST Ferenc Éger wrote:
Hello All,
I cannot participate today. I am involved in the cleanup of a technical failure at home.
Regards,
Ferenc
On 28/08/2021 05:40, Hagen SANKOWSKI wrote:
Hello List!
This is our weekly announcement for the next Mumble Sessions on Sunday
2021-08-29 @ 18:00 UTC.
Please join us as usual at our Mumble Server murmur.libresilicon.com at Port 64738, the Channel is IC.
We like to follow-up our topics from mumble sessions before.
Regards, Hagen. _______________________________________________ Libresilicon-developers mailing list Libresilicon-developers@list.libresilicon.com https://list.libresilicon.com/mailman/listinfo/libresilicon-developers
Libresilicon-developers mailing list Libresilicon-developers@list.libresilicon.com https://list.libresilicon.com/mailman/listinfo/libresilicon-developers
Ah, ok. Pressure relief valves age especially fast because they're under constant mechanical stress and are in contact with liquids. But usually you just gotta get a replacement valve in the store of the closest town or order one over eBay or so. About the water: Just recently my place here got flooded after a Typhoon like thunderstorm so I had to fill bucket after bucket of water until the flat was dry again, so I kind of can understand the pain.
About what you missed during the Mumble meeting: Not much. We were talking about buying a second hand furnace from eBay and I asked Ludwig to keep his eyes open for something like a Lindber Tube furnace. It's the one Jeri Elsworth uses in her videos and there is one recently on eBay for under 500 Euros, although I'm hesistant to buy it because it looks very beaten up and I'm unsure whether it's still working. We also talked about the possibility to hack a foundry for melting aluminum cans into a simplistic tube furnace, to which I'm tending more and more, as the time without a furnace passes.
Cheers -lev
On Wednesday, September 1, 2021 8:59:48 PM WEST Ferenc Éger wrote:
Nothing dangerous, just the f... antastic pressure relief valve of the fantastic boiler set itself off with no apparent reason, so the whole heater room was flooded (plus no warm water for days).
BTW, what did I miss on Sunday?
Regards,
Ferenc
On 29/08/2021 16:26, David Lanzendörfer wrote:
Oh. Okay. I hope it's nothing dangerous... Good luck!
Cheers David
On Sunday, August 29, 2021 3:24:51 PM WEST Ferenc Éger wrote:
Hello All,
I cannot participate today. I am involved in the cleanup of a technical failure at home.
Regards,
Ferenc
On 28/08/2021 05:40, Hagen SANKOWSKI wrote:
Hello List!
This is our weekly announcement for the next Mumble Sessions on Sunday
2021-08-29 @ 18:00 UTC.
Please join us as usual at our Mumble Server murmur.libresilicon.com at Port 64738, the Channel is IC.
We like to follow-up our topics from mumble sessions before.
Regards, Hagen. _______________________________________________ Libresilicon-developers mailing list Libresilicon-developers@list.libresilicon.com https://list.libresilicon.com/mailman/listinfo/libresilicon-developers
Libresilicon-developers mailing list Libresilicon-developers@list.libresilicon.com https://list.libresilicon.com/mailman/listinfo/libresilicon-developers
On September 1, 2021 8:06:44 PM UTC, "David Lanzendörfer" leviathan@libresilicon.com wrote:
We also talked about the possibility to hack a foundry for melting aluminum cans into a simplistic tube furnace, to which I'm tending more and more, as the time without a furnace passes.
look up Julia Longtin's 3D aluminium casting talk. she uses 2nd hand stainless steel toothbrush cups as crucibles, which, containing carbon, are great for attracting aluminium oxide.
a 2nd hand 2500 watt microwave oven works great. bear in mind she blew up 3 of them (they were 2nd hand)
the use of an industrial / catering microwave turns out to be drastically cheaper than a propane furnace to run, and one hell of a lot quicker (hours rather than days)
julia's talk explains that you need to cut the aluminium into small pieces and start with a clean seed piece, then drop the crap aluminium pieces in one after the other, into the melted blob.
if you chuck all the oxidised pieces in and expect them to melt on their own nothing happens.
the alu oxide sticks to the stainless steel and eventually you have to chuck it out. but that's ok, they are cheap. i mean, toothbrush cup. duh.
l.
Ah. The idea was to use a normal melting furnace, then put a quartz glass bottle into the crucibel, so that the silicon is isolated from the carbon and then heat the whole thing up to a 1000 degrees Celsius, you can also just build an earth oven furnace, if you just wanted to melt metal, there's some nice instructables from "Primitive Living" on YouTube, on how to melt iron with a furnace made out of dirt :-)
Cheers lev
On Wednesday, September 1, 2021 9:19:46 PM WEST lkcl wrote:
On September 1, 2021 8:06:44 PM UTC, "David Lanzendörfer"
leviathan@libresilicon.com wrote:
We also talked about the possibility to hack a foundry for melting aluminum cans into a simplistic tube furnace, to which I'm tending more and more, as the time without a furnace passes.
look up Julia Longtin's 3D aluminium casting talk. she uses 2nd hand stainless steel toothbrush cups as crucibles, which, containing carbon, are great for attracting aluminium oxide.
a 2nd hand 2500 watt microwave oven works great. bear in mind she blew up 3 of them (they were 2nd hand)
the use of an industrial / catering microwave turns out to be drastically cheaper than a propane furnace to run, and one hell of a lot quicker (hours rather than days)
julia's talk explains that you need to cut the aluminium into small pieces and start with a clean seed piece, then drop the crap aluminium pieces in one after the other, into the melted blob.
if you chuck all the oxidised pieces in and expect them to melt on their own nothing happens.
the alu oxide sticks to the stainless steel and eventually you have to chuck it out. but that's ok, they are cheap. i mean, toothbrush cup. duh.
l.
On September 1, 2021 8:23:55 PM UTC, "David Lanzendörfer" leviathan@libresilicon.com wrote:
Ah. The idea was to use a normal melting furnace, then put a quartz glass bottle into the crucibel,
try a 2nd hand 2500 W catering microwave, quartz bottle straight in.
from a junkyard they can be as low as USD 25, Julia bought 4.
do not operate indoors in case of exploding.
l.
Uhm Microwaves and semiconductors do not... go well together
Cheers -lev
On Wednesday, September 1, 2021 9:49:40 PM WEST lkcl wrote:
On September 1, 2021 8:23:55 PM UTC, "David Lanzendörfer"
leviathan@libresilicon.com wrote:
Ah. The idea was to use a normal melting furnace, then put a quartz glass bottle into the crucibel,
try a 2nd hand 2500 W catering microwave, quartz bottle straight in.
from a junkyard they can be as low as USD 25, Julia bought 4.
do not operate indoors in case of exploding.
l.
On September 1, 2021 9:26:14 PM UTC, "David Lanzendörfer" leviathan@libresilicon.com wrote:
Uhm Microwaves and semiconductors do not... go well together
this is raw materials? or post-processing?
l.
Besides the fact that microwaves probably aren't healthy for the crystal lattice at ANY stage of the process... I also need the furnace to grow the polysilicon as well as the protective layer of oxide, for isolation, before interconnecting it with the metal.
-lev
On Wednesday, September 1, 2021 11:21:53 PM WEST lkcl wrote:
On September 1, 2021 9:26:14 PM UTC, "David Lanzendörfer"
leviathan@libresilicon.com wrote:
Uhm Microwaves and semiconductors do not... go well together
this is raw materials? or post-processing?
l.
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