From hsank at posteo.de  Sat Mar  5 08:29:41 2022
From: hsank at posteo.de (Hagen SANKOWSKI)
Date: Sat,  5 Mar 2022 07:29:41 +0000
Subject: [Libre-silicon-devel] Reminder - Mumble session on Sunday
	2022-03-06 @ 18:00 UTC
Message-ID: <76943ff8-d6cc-222f-a0d4-ffcdb196da8e@posteo.de>

Hello List!

This is our weekly reminder for our next Mumble Sessions on Sunday

	2022-03-06 @ 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.

From leviathan at libresilicon.com  Mon Mar  7 00:14:16 2022
From: leviathan at libresilicon.com (David =?ISO-8859-1?Q?Lanzend=F6rfer?=)
Date: Sun, 06 Mar 2022 23:14:16 +0000
Subject: [Libre-silicon-devel] Wikimedia entry: R&D challenge
Message-ID: <4058306.XjiedLTPgY@harvey>

Hi
I've started the first draft of the R&D challenge:
https://wiki.libresilicon.com/index.php?title=R%26D_challenge#Requirements

Feel free to add more text and make it more eloquent :-)

Cheers
-lev


From leviathan at libresilicon.com  Tue Mar  8 17:51:50 2022
From: leviathan at libresilicon.com (David =?ISO-8859-1?Q?Lanzend=F6rfer?=)
Date: Tue, 08 Mar 2022 16:51:50 +0000
Subject: [Libre-silicon-devel] Printing chips
Message-ID: <1781858.F6aa3M5aH2@harvey>

Hi folks
I just got an email last night from Oklahoma from some crypto miners who wanna 
print microchips for building miners...
Maybe that might be THE solution for our issue with dealy poisonous chemicals 
when running a classic silicon based process in a home lab?
What do you all think?

Cheers
-lev


From lkcl at lkcl.net  Tue Mar  8 18:48:20 2022
From: lkcl at lkcl.net (Luke Kenneth Casson Leighton)
Date: Tue, 8 Mar 2022 17:48:20 +0000
Subject: [Libre-silicon-devel] Printing chips
In-Reply-To: <1781858.F6aa3M5aH2@harvey>
References: <1781858.F6aa3M5aH2@harvey>
Message-ID: <CAPweEDy_f5whwRr_kTHKuLaZFjo=UOrrzi1HGzwhgzEzSXMoKA@mail.gmail.com>

On Tue, Mar 8, 2022 at 4:52 PM David Lanzend?rfer
<leviathan at libresilicon.com> wrote:

> Hi folks
> I just got an email last night from Oklahoma from some crypto miners who wanna
> print microchips for building miners...

if they have several tens of billions of dollars available once converted out
of {insert-currency-of-choice}, then they can buy a Foundry, and release
the PDK just like Skywater did.

caveat: that's only if it is *their* PDK - a number of Foundries actually buy
in their PDK and process from *other Foundries*, such as the India Lab,
which bought the Israeli Tower Semi process (Tower Semi is currently
being bought by Intel).

Global Foundries was available lock stock and barrel for 4.5 billion
a few years ago.

l.

From leviathan at libresilicon.com  Tue Mar  8 18:59:59 2022
From: leviathan at libresilicon.com (David =?ISO-8859-1?Q?Lanzend=F6rfer?=)
Date: Tue, 08 Mar 2022 17:59:59 +0000
Subject: [Libre-silicon-devel] Printing chips
In-Reply-To: <CAPweEDy_f5whwRr_kTHKuLaZFjo=UOrrzi1HGzwhgzEzSXMoKA@mail.gmail.com>
References: <1781858.F6aa3M5aH2@harvey>
 <CAPweEDy_f5whwRr_kTHKuLaZFjo=UOrrzi1HGzwhgzEzSXMoKA@mail.gmail.com>
Message-ID: <4596840.EFpqLB7NQh@harvey>

Hi
No. They've asked about printing chips, which would include some highly 
specialized submicron nozzle and special polymers:
https://pubs.rsc.org/en/content/articlelanding/2020/tc/d0tc01341b

It might really be a feasible option for manufacturing LibreSilicon layouts...

Any chemists around?

Cheers
-lev

On Tuesday, March 8, 2022 5:48:20 PM WET Luke Kenneth Casson Leighton wrote:
> On Tue, Mar 8, 2022 at 4:52 PM David Lanzend?rfer
> 
> <leviathan at libresilicon.com> wrote:
> > Hi folks
> > I just got an email last night from Oklahoma from some crypto miners who
> > wanna print microchips for building miners...
> 
> if they have several tens of billions of dollars available once converted
> out of {insert-currency-of-choice}, then they can buy a Foundry, and
> release the PDK just like Skywater did.
> 
> caveat: that's only if it is *their* PDK - a number of Foundries actually
> buy in their PDK and process from *other Foundries*, such as the India Lab,
> which bought the Israeli Tower Semi process (Tower Semi is currently being
> bought by Intel).
> 
> Global Foundries was available lock stock and barrel for 4.5 billion
> a few years ago.
> 
> l.
> _______________________________________________
> Libresilicon-developers mailing list
> Libresilicon-developers at list.libresilicon.com
> https://list.libresilicon.com/mailman/listinfo/libresilicon-developers


From leviathan at libresilicon.com  Tue Mar  8 19:05:11 2022
From: leviathan at libresilicon.com (David =?ISO-8859-1?Q?Lanzend=F6rfer?=)
Date: Tue, 08 Mar 2022 18:05:11 +0000
Subject: [Libre-silicon-devel] Printing chips
In-Reply-To: <CAPweEDy_f5whwRr_kTHKuLaZFjo=UOrrzi1HGzwhgzEzSXMoKA@mail.gmail.com>
References: <1781858.F6aa3M5aH2@harvey>
 <CAPweEDy_f5whwRr_kTHKuLaZFjo=UOrrzi1HGzwhgzEzSXMoKA@mail.gmail.com>
Message-ID: <329375043.geTP49jzvY@harvey>

I just had an idea!
You folks were talking about using a laser from a DVD reader/writer, right?
Lets use this idea to build a small exposure unit for hardening out dopant
accepting polymers!
That solves ALL the problems we had so far with poisonous chemicals!

Cheers
-lev

On Tuesday, March 8, 2022 5:48:20 PM WET Luke Kenneth Casson Leighton wrote:
> On Tue, Mar 8, 2022 at 4:52 PM David Lanzend?rfer
> 
> <leviathan at libresilicon.com> wrote:
> > Hi folks
> > I just got an email last night from Oklahoma from some crypto miners who
> > wanna print microchips for building miners...
> 
> if they have several tens of billions of dollars available once converted
> out of {insert-currency-of-choice}, then they can buy a Foundry, and
> release the PDK just like Skywater did.
> 
> caveat: that's only if it is *their* PDK - a number of Foundries actually
> buy in their PDK and process from *other Foundries*, such as the India Lab,
> which bought the Israeli Tower Semi process (Tower Semi is currently being
> bought by Intel).
> 
> Global Foundries was available lock stock and barrel for 4.5 billion
> a few years ago.
> 
> l.
> _______________________________________________
> Libresilicon-developers mailing list
> Libresilicon-developers at list.libresilicon.com
> https://list.libresilicon.com/mailman/listinfo/libresilicon-developers

-- 
(\__/)
(='.'=) This is Ninja Bunny.
(")_(")
Copy and paste Bunny into your
signature to help him gain world domination


From programmerjake at gmail.com  Tue Mar  8 20:28:47 2022
From: programmerjake at gmail.com (Jacob Lifshay)
Date: Tue, 8 Mar 2022 11:28:47 -0800
Subject: [Libre-silicon-devel] Printing chips
In-Reply-To: <4596840.EFpqLB7NQh@harvey>
References: <1781858.F6aa3M5aH2@harvey>
 <CAPweEDy_f5whwRr_kTHKuLaZFjo=UOrrzi1HGzwhgzEzSXMoKA@mail.gmail.com>
 <4596840.EFpqLB7NQh@harvey>
Message-ID: <CAC2bXD6MMBfT0yRq54gDYVT+nAHc0e8i2f3AUzBjiHp0G1aB9g@mail.gmail.com>

On Tue, Mar 8, 2022, 10:00 David Lanzend?rfer <leviathan at libresilicon.com>
wrote:

> Hi
> No. They've asked about printing chips, which would include some highly
> specialized submicron nozzle and special polymers:
> https://pubs.rsc.org/en/content/articlelanding/2020/tc/d0tc01341b
>
> It might really be a feasible option for manufacturing LibreSilicon
> layouts...
>
> Any chemists around?
>

well...i have nearly no practical experience, but i do know a lot of
chemistry...

>From what I can tell, they're comparing organic semiconductors that they
made with an electro-spinning-style process with organic semiconductors
that were spin-coated onto a SiO2/Si substrate (the substrate is implied to
be just a handy surface to put their organic semiconductors on, it doesn't
have silicon transistors afaict)...their process looks like it could be
quite useful, if you want organic semiconductors. organic semiconductors
generally have several problems when compared to silicon transistors:
1. they are much larger, the resolution you can achieve with silicon is
usually several orders of magnitude smaller (tens of nm vs 10-100um).
2. organic semiconductors generally have worse electrical performance than
silicon, often by several orders of magnitude -- this is beyond just what
the size difference would give.
3. organic semiconductors often degrade quickly (years) vs. silicon which
can last tens - hundreds of years. Think OLED screen burn-in.

if you want to build cryptocurrency miners and you care about energy
efficiency (hashes per joule), organic semiconductors are a pretty terrible
choice, because 1 and 2 combine to give terrible performance and low
density.

if you're working with a cryptocurrency where the algorithm changes every
week, organic semiconductors might have an advantage, since you could print
new ones each week, and hopefully the circuits would be better than a
general purpose processor.

Jacob
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://list.libresilicon.com/pipermail/libresilicon-developers/attachments/20220308/7f1d1418/attachment.html>

From leviathan at libresilicon.com  Tue Mar  8 23:25:38 2022
From: leviathan at libresilicon.com (David =?ISO-8859-1?Q?Lanzend=F6rfer?=)
Date: Tue, 08 Mar 2022 22:25:38 +0000
Subject: [Libre-silicon-devel] Printing chips
In-Reply-To: <CAC2bXD6MMBfT0yRq54gDYVT+nAHc0e8i2f3AUzBjiHp0G1aB9g@mail.gmail.com>
References: <1781858.F6aa3M5aH2@harvey> <4596840.EFpqLB7NQh@harvey>
 <CAC2bXD6MMBfT0yRq54gDYVT+nAHc0e8i2f3AUzBjiHp0G1aB9g@mail.gmail.com>
Message-ID: <12593328.Phsc7p0SPq@harvey>

Hi Jacob
Thanks for your contribution! So much appreciated! <3
Hmm... while the initial circuits may not be suitable for hardcore number 
crunching for hashing blocks, we might be able to use it for prototyping our 
layouts at home, which already would be awesome progress, especially if it 
could be done with chemicals which can be bought without ending up on a terror 
watch list.
It would be interesting to see, whether we could build simple circuits like a 
555 or maybe even a simple RISC-V MCU with it.
Hagen shared another document here BTW:
https://sci-hub.ee/https://doi.org/10.1002/adma.201302278

What's in your opinion the best way for patterning of structures using such 
polymer? I was thinking, we could mix some photoreactive polymer like the
photoresist commonly used for photomasks in semiconductor manufacturing
and then modify the chemical formulas in order to give them those dopant
accepting properties.
Then we could even use acryllic glas or so as a substrate (given the surface
is enough smooth)

Cheers
-lev

On Tuesday, March 8, 2022 7:28:47 PM WET Jacob Lifshay wrote:
> On Tue, Mar 8, 2022, 10:00 David Lanzend?rfer <leviathan at libresilicon.com>
> 
> wrote:
> > Hi
> > No. They've asked about printing chips, which would include some highly
> > specialized submicron nozzle and special polymers:
> > https://pubs.rsc.org/en/content/articlelanding/2020/tc/d0tc01341b
> > 
> > It might really be a feasible option for manufacturing LibreSilicon
> > layouts...
> > 
> > Any chemists around?
> 
> well...i have nearly no practical experience, but i do know a lot of
> chemistry...
> 
> From what I can tell, they're comparing organic semiconductors that they
> made with an electro-spinning-style process with organic semiconductors
> that were spin-coated onto a SiO2/Si substrate (the substrate is implied to
> be just a handy surface to put their organic semiconductors on, it doesn't
> have silicon transistors afaict)...their process looks like it could be
> quite useful, if you want organic semiconductors. organic semiconductors
> generally have several problems when compared to silicon transistors:
> 1. they are much larger, the resolution you can achieve with silicon is
> usually several orders of magnitude smaller (tens of nm vs 10-100um).
> 2. organic semiconductors generally have worse electrical performance than
> silicon, often by several orders of magnitude -- this is beyond just what
> the size difference would give.
> 3. organic semiconductors often degrade quickly (years) vs. silicon which
> can last tens - hundreds of years. Think OLED screen burn-in.
> 
> if you want to build cryptocurrency miners and you care about energy
> efficiency (hashes per joule), organic semiconductors are a pretty terrible
> choice, because 1 and 2 combine to give terrible performance and low
> density.
> 
> if you're working with a cryptocurrency where the algorithm changes every
> week, organic semiconductors might have an advantage, since you could print
> new ones each week, and hopefully the circuits would be better than a
> general purpose processor.
> 
> Jacob


-- 
(\__/)
(='.'=) This is Ninja Bunny.
(")_(")
Copy and paste Bunny into your
signature to help him gain world domination


From programmerjake at gmail.com  Wed Mar  9 06:07:33 2022
From: programmerjake at gmail.com (Jacob Lifshay)
Date: Tue, 8 Mar 2022 21:07:33 -0800
Subject: [Libre-silicon-devel] Printing chips
In-Reply-To: <12593328.Phsc7p0SPq@harvey>
References: <1781858.F6aa3M5aH2@harvey> <4596840.EFpqLB7NQh@harvey>
 <CAC2bXD6MMBfT0yRq54gDYVT+nAHc0e8i2f3AUzBjiHp0G1aB9g@mail.gmail.com>
 <12593328.Phsc7p0SPq@harvey>
Message-ID: <CAC2bXD5c=HD1FZq931QWVXAr0nQGRmociVFqSF-8se8TcxQhSQ@mail.gmail.com>

On Tue, Mar 8, 2022, 14:25 David Lanzend?rfer <leviathan at libresilicon.com>
wrote:

> Hi Jacob
> Thanks for your contribution! So much appreciated! <3
> Hmm... while the initial circuits may not be suitable for hardcore number
> crunching for hashing blocks, we might be able to use it for prototyping
> our
> layouts at home, which already would be awesome progress, especially if it
> could be done with chemicals which can be bought without ending up on a
> terror
> watch list.
> It would be interesting to see, whether we could build simple circuits
> like a
> 555 or maybe even a simple RISC-V MCU with it.
> Hagen shared another document here BTW:
> https://sci-hub.ee/https://doi.org/10.1002/adma.201302278
>
> What's in your opinion the best way for patterning of structures using
> such
> polymer?


unfortunately, that's exactly the kind of question where I won't have a
particularly useful answer, since that would require experience, and/or
lots of research into the specifics of how such polymers behave, the
different methods by which polymers can be patterned, etc. That's more the
domain of materials engineering rather than chemistry... That said, I'd
make a wild guess that electro-spinning may work well similar to how FDM 3D
Printing works, except that the flow of fluid through the nozzle could be
quickly changed by changing the electric field, rather than just adjusting
a filament-feeder servo.

I was thinking, we could mix some photoreactive polymer like the
> photoresist commonly used for photomasks in semiconductor manufacturing
> and then modify the chemical formulas in order to give them those dopant
> accepting properties.
>

that seems likely to break the photoreactive properties and/or the
dopability. that said, it never hurt to try, though it may be
time-consuming and expensive (specialty chemicals aren't generally cheap).

Then we could even use acryllic glas or so as a substrate (given the surface
> is enough smooth)
>

hmm, i'd use something like glass, or some other ceramic material, since
the solvents used can likely easily dissolve acrylic (iirc dcm, which is
used in a lot of commercial acrylic solvents/bonders, is very chemically
similar to chloroform, which i think is what they were using in that rsc.org
paper). glass is easily cleaned, and is quite chemically similar to the
SiO2 that they were using in the rsc.org paper, though you may have to
watch out for contaminants contained in the glass, which depends on the
exact composition of glass you have. I remember hearing about how sodium
ions in common glasses can contaminate semiconductors, though that is
Si-based semiconductors rather than organic semiconductors. fused silica
may be a better option, since it is SiO2, though is more expensive.

Jacob
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://list.libresilicon.com/pipermail/libresilicon-developers/attachments/20220308/b99a20c3/attachment.html>

From leviathan at libresilicon.com  Wed Mar  9 16:56:24 2022
From: leviathan at libresilicon.com (David =?ISO-8859-1?Q?Lanzend=F6rfer?=)
Date: Wed, 09 Mar 2022 15:56:24 +0000
Subject: [Libre-silicon-devel] Printing chips
In-Reply-To: <CAC2bXD5c=HD1FZq931QWVXAr0nQGRmociVFqSF-8se8TcxQhSQ@mail.gmail.com>
References: <1781858.F6aa3M5aH2@harvey> <12593328.Phsc7p0SPq@harvey>
 <CAC2bXD5c=HD1FZq931QWVXAr0nQGRmociVFqSF-8se8TcxQhSQ@mail.gmail.com>
Message-ID: <12221326.kChgFD5xar@harvey>

Hi
So yesterday I was having some brainstorming with two guys from here in
Portugal, who're going to join our maskless stepper aligner project.
We were talking a bit about the substrate too.
I think I'll use small glass squares, because for an initial stepper mechanism
it's easier to just target single die exposure of like 1cm x 1cm or so, using 
the laser exposure technique used for photo epoxy 3D printers.
I found some modules which might be suitable, so that we don't have to
design it from scratch.
Photoreactive dopant accepting polymer would really be a game changer tho.
Otherwise we could try to "just" scale down a normal additive printer design 
to a micrometer scale... It will require multiple nozzles tho, because we need
to feed more than just one material... p-doped, n-doped and isolator...

Cheers
-lev

On Wednesday, March 9, 2022 5:07:33 AM WET Jacob Lifshay wrote:
> On Tue, Mar 8, 2022, 14:25 David Lanzend?rfer <leviathan at libresilicon.com>
> 
> wrote:
> > Hi Jacob
> > Thanks for your contribution! So much appreciated! <3
> > Hmm... while the initial circuits may not be suitable for hardcore number
> > crunching for hashing blocks, we might be able to use it for prototyping
> > our
> > layouts at home, which already would be awesome progress, especially if it
> > could be done with chemicals which can be bought without ending up on a
> > terror
> > watch list.
> > It would be interesting to see, whether we could build simple circuits
> > like a
> > 555 or maybe even a simple RISC-V MCU with it.
> > Hagen shared another document here BTW:
> > https://sci-hub.ee/https://doi.org/10.1002/adma.201302278
> > 
> > What's in your opinion the best way for patterning of structures using
> > such
> > polymer?
> 
> unfortunately, that's exactly the kind of question where I won't have a
> particularly useful answer, since that would require experience, and/or
> lots of research into the specifics of how such polymers behave, the
> different methods by which polymers can be patterned, etc. That's more the
> domain of materials engineering rather than chemistry... That said, I'd
> make a wild guess that electro-spinning may work well similar to how FDM 3D
> Printing works, except that the flow of fluid through the nozzle could be
> quickly changed by changing the electric field, rather than just adjusting
> a filament-feeder servo.
> 
> I was thinking, we could mix some photoreactive polymer like the
> 
> > photoresist commonly used for photomasks in semiconductor manufacturing
> > and then modify the chemical formulas in order to give them those dopant
> > accepting properties.
> 
> that seems likely to break the photoreactive properties and/or the
> dopability. that said, it never hurt to try, though it may be
> time-consuming and expensive (specialty chemicals aren't generally cheap).
> 
> Then we could even use acryllic glas or so as a substrate (given the surface
> > is enough smooth)
> 
> hmm, i'd use something like glass, or some other ceramic material, since
> the solvents used can likely easily dissolve acrylic (iirc dcm, which is
> used in a lot of commercial acrylic solvents/bonders, is very chemically
> similar to chloroform, which i think is what they were using in that rsc.org
> paper). glass is easily cleaned, and is quite chemically similar to the
> SiO2 that they were using in the rsc.org paper, though you may have to
> watch out for contaminants contained in the glass, which depends on the
> exact composition of glass you have. I remember hearing about how sodium
> ions in common glasses can contaminate semiconductors, though that is
> Si-based semiconductors rather than organic semiconductors. fused silica
> may be a better option, since it is SiO2, though is more expensive.
> 
> Jacob


-- 
(\__/)
(='.'=) This is Ninja Bunny.
(")_(")
Copy and paste Bunny into your
signature to help him gain world domination


From lkcl at lkcl.net  Wed Mar  9 17:04:29 2022
From: lkcl at lkcl.net (Luke Kenneth Casson Leighton)
Date: Wed, 9 Mar 2022 16:04:29 +0000
Subject: [Libre-silicon-devel] Printing chips
In-Reply-To: <12221326.kChgFD5xar@harvey>
References: <1781858.F6aa3M5aH2@harvey> <12593328.Phsc7p0SPq@harvey>
 <CAC2bXD5c=HD1FZq931QWVXAr0nQGRmociVFqSF-8se8TcxQhSQ@mail.gmail.com>
 <12221326.kChgFD5xar@harvey>
Message-ID: <CAPweEDz=_L+qUDm-1urYXWk4tO9Q6as9Rr4f=sCKyhVxAGFdtQ@mail.gmail.com>

On Wed, Mar 9, 2022 at 3:56 PM David Lanzend?rfer
<leviathan at libresilicon.com> wrote:

> Photoreactive dopant accepting polymer would really be a game changer tho.
> Otherwise we could try to "just" scale down a normal additive printer design
> to a micrometer scale... It will require multiple nozzles tho, because we need
> to feed more than just one material... p-doped, n-doped and isolator...

the creator of this - which i thoroughly recommend (it has a 40:1 wormdrive
built-in and an automotive-grade flexible driveshaft)

https://flex3drive.com/product/g5-flex-extruder/

also created a dual-extruder head (2-in to 1-nozzle).

there do exist triple extruders
https://www.matterhackers.com/store/printer-accessories/polystroooder-tri-hotend-1.75mm

i am assuming of course that the material being "fed" comes in the standard
1.75mm extrusion roll, which, duh, may not actually be the case, duh.

l.

From leviathan at libresilicon.com  Wed Mar  9 17:23:32 2022
From: leviathan at libresilicon.com (David =?ISO-8859-1?Q?Lanzend=F6rfer?=)
Date: Wed, 09 Mar 2022 16:23:32 +0000
Subject: [Libre-silicon-devel] Printing chips
In-Reply-To: <CAPweEDz=_L+qUDm-1urYXWk4tO9Q6as9Rr4f=sCKyhVxAGFdtQ@mail.gmail.com>
References: <1781858.F6aa3M5aH2@harvey> <12221326.kChgFD5xar@harvey>
 <CAPweEDz=_L+qUDm-1urYXWk4tO9Q6as9Rr4f=sCKyhVxAGFdtQ@mail.gmail.com>
Message-ID: <4209724.0Q99y6v4BA@harvey>

Now we only need help from Ray Palmer and his Atom suit in order to shrink it 
down to a size where it's usable :-)
I think the route of trying to produce a photoreactive polymer is more
promising...

-lev

On Wednesday, March 9, 2022 4:04:29 PM WET Luke Kenneth Casson Leighton wrote:
> On Wed, Mar 9, 2022 at 3:56 PM David Lanzend?rfer
> 
> <leviathan at libresilicon.com> wrote:
> > Photoreactive dopant accepting polymer would really be a game changer tho.
> > Otherwise we could try to "just" scale down a normal additive printer
> > design to a micrometer scale... It will require multiple nozzles tho,
> > because we need to feed more than just one material... p-doped, n-doped
> > and isolator...
> the creator of this - which i thoroughly recommend (it has a 40:1 wormdrive
> built-in and an automotive-grade flexible driveshaft)
> 
> https://flex3drive.com/product/g5-flex-extruder/
> 
> also created a dual-extruder head (2-in to 1-nozzle).
> 
> there do exist triple extruders
> https://www.matterhackers.com/store/printer-accessories/polystroooder-tri-ho
> tend-1.75mm
> 
> i am assuming of course that the material being "fed" comes in the standard
> 1.75mm extrusion roll, which, duh, may not actually be the case, duh.
> 
> l.
> _______________________________________________
> Libresilicon-developers mailing list
> Libresilicon-developers at list.libresilicon.com
> https://list.libresilicon.com/mailman/listinfo/libresilicon-developers


-- 
(\__/)
(='.'=) This is Ninja Bunny.
(")_(")
Copy and paste Bunny into your
signature to help him gain world domination


From hsank at posteo.de  Sat Mar 12 10:14:17 2022
From: hsank at posteo.de (Hagen SANKOWSKI)
Date: Sat, 12 Mar 2022 09:14:17 +0000
Subject: [Libre-silicon-devel] Reminder - Mumble session on Sunday
	2022-03-13 @ 18:00 UTC
Message-ID: <e0bcdcdd-9466-b508-e7cd-f31647205e42@posteo.de>

Hello List!

This is our weekly reminder for our next Mumble Sessions on Sunday

	2022-03-13 @ 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.

From hsank at posteo.de  Fri Mar 18 20:51:45 2022
From: hsank at posteo.de (Hagen SANKOWSKI)
Date: Fri, 18 Mar 2022 19:51:45 +0000
Subject: [Libre-silicon-devel] Reminder - Mumble session on Sunday
	2022-03-20 @ 18:00 UTC
Message-ID: <a83d4961-cd54-8f22-c5c8-4c8eff6008bf@posteo.de>

Hello List!

This is our weekly reminder for our next Mumble Sessions on Sunday

	2022-03-20 @ 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.

From hsank at posteo.de  Fri Mar 25 20:48:38 2022
From: hsank at posteo.de (Hagen SANKOWSKI)
Date: Fri, 25 Mar 2022 19:48:38 +0000
Subject: [Libre-silicon-devel] Reminder - Mumble session on Sunday
	2022-03-27 @ 18:00 UTC
Message-ID: <7330c3b2-403f-0b37-422e-1a769f33cd37@posteo.de>

Hello List!

This is our weekly reminder for our next Mumble Sessions on Sunday

	2022-03-27 @ 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.