<div dir="auto">If molten media gets into a bind I have a 40 foot high cube shipping container out here in motukarara. It has a big opening cut out then patched with ply so it's not secure (other than being out in the wops), but it's there if you get desperate. <div dir="auto"><br></div><div dir="auto">As to the fibre optic not having enough light to xmit or a surface to project on... How does ulexite do that?</div><div dir="auto"><br></div><div dir="auto">-a</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, 3 Dec 2022, 22:13 , <<a href="mailto:chchrobotics-request@lists.ourshack.com">chchrobotics-request@lists.ourshack.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Send Chchrobotics mailing list submissions to<br>
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Today's Topics:<br>
<br>
1. Molten Media (<a href="mailto:rudy.kremers@123gaming.com" target="_blank" rel="noreferrer">rudy.kremers@123gaming.com</a>)<br>
2. Re: Molten Media (Spencer Travers)<br>
3. Fibre optic scraps? / synthetic ulexite? (andrew dean)<br>
4. Re: Fibre optic scraps? / synthetic ulexite? (Mark Atherton)<br>
5. Re: Fibre optic scraps? / synthetic ulexite? (Helmut Walle)<br>
<br>
<br>
----------------------------------------------------------------------<br>
<br>
Message: 1<br>
Date: Fri, 2 Dec 2022 19:28:16 +0000<br>
From: "<a href="mailto:rudy.kremers@123gaming.com" target="_blank" rel="noreferrer">rudy.kremers@123gaming.com</a>" <<a href="mailto:rudy.kremers@racingworld.com" target="_blank" rel="noreferrer">rudy.kremers@racingworld.com</a>><br>
To: Christchurch Robotics <<a href="mailto:chchrobotics@lists.ourshack.com" target="_blank" rel="noreferrer">chchrobotics@lists.ourshack.com</a>><br>
Subject: [chbot] Molten Media<br>
Message-ID:<br>
<<a href="mailto:AM6PR08MB331913659BB2877BF8082E4F86179@AM6PR08MB3319.eurprd08.prod.outlook.com" target="_blank" rel="noreferrer">AM6PR08MB331913659BB2877BF8082E4F86179@AM6PR08MB3319.eurprd08.prod.outlook.com</a>><br>
<br>
Content-Type: text/plain; charset="iso-8859-1"<br>
<br>
Hello everyone.<br>
<br>
Molten Media Trust has decided to downsize its premises as we were paying too many $ to store junk.<br>
We were on track to move to a smaller building but the new landlord has pulled out and now it looks like we will be homeless for awhile while we try to look for alternative accommodation.<br>
<br>
If anyone knows of any buildings for lease or 'lease to buy' that would suit us or if you have some temporary storage, please let me know.<br>
<br>
We have to vacate the current building by the end of this month so if anyone is willing to lend a hand with our move, that would be awesome.<br>
<br>
Cheers,<br>
Rudy<br>
ph 0274798052<br>
<br>
<br>
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Message: 2<br>
Date: Sat, 3 Dec 2022 16:42:27 +1300<br>
From: Spencer Travers <<a href="mailto:spencer.travers@gmail.com" target="_blank" rel="noreferrer">spencer.travers@gmail.com</a>><br>
To: Christchurch Robotics <<a href="mailto:chchrobotics@lists.ourshack.com" target="_blank" rel="noreferrer">chchrobotics@lists.ourshack.com</a>><br>
Subject: Re: [chbot] Molten Media<br>
Message-ID:<br>
<<a href="mailto:CAM1-1d0zpDOfDZ1UeCUf4sZgw7V6arQHNiKWu3Kyc730Tf4Tjg@mail.gmail.com" target="_blank" rel="noreferrer">CAM1-1d0zpDOfDZ1UeCUf4sZgw7V6arQHNiKWu3Kyc730Tf4Tjg@mail.gmail.com</a>><br>
Content-Type: text/plain; charset="utf-8"<br>
<br>
Hi Rudy,<br>
<br>
Are you after people to help dismantle computers as was done before your<br>
previous move, or is it more about physically moving to the new premises,<br>
or both?<br>
<br>
Spencer<br>
<br>
On Sat, 3 Dec 2022 at 08:29, <a href="mailto:rudy.kremers@123gaming.com" target="_blank" rel="noreferrer">rudy.kremers@123gaming.com</a> <<br>
<a href="mailto:rudy.kremers@racingworld.com" target="_blank" rel="noreferrer">rudy.kremers@racingworld.com</a>> wrote:<br>
<br>
> Hello everyone.<br>
><br>
> Molten Media Trust has decided to downsize its premises as we were paying<br>
> too many $ to store junk.<br>
> We were on track to move to a smaller building but the new landlord has<br>
> pulled out and now it looks like we will be homeless for awhile while we<br>
> try to look for alternative accommodation.<br>
><br>
> If anyone knows of any buildings for lease or 'lease to buy' that would<br>
> suit us or if you have some temporary storage, please let me know.<br>
><br>
> We have to vacate the current building by the end of this month so if<br>
> anyone is willing to lend a hand with our move, that would be awesome.<br>
><br>
> Cheers,<br>
> Rudy<br>
> ph 0274798052<br>
><br>
><br>
> _______________________________________________<br>
> Chchrobotics mailing list <a href="mailto:Chchrobotics@lists.ourshack.com" target="_blank" rel="noreferrer">Chchrobotics@lists.ourshack.com</a><br>
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> Mail Archives: <a href="http://lists.ourshack.com/pipermail/chchrobotics/" rel="noreferrer noreferrer" target="_blank">http://lists.ourshack.com/pipermail/chchrobotics/</a><br>
> Meetings usually 3rd Monday each month. See <a href="http://kiwibots.org" rel="noreferrer noreferrer" target="_blank">http://kiwibots.org</a> for<br>
> venue, directions and dates.<br>
> When replying, please edit your Subject line to reflect new subjects.<br>
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Message: 3<br>
Date: Sat, 3 Dec 2022 18:29:54 +1300<br>
From: andrew dean <<a href="mailto:nzandydean@gmail.com" target="_blank" rel="noreferrer">nzandydean@gmail.com</a>><br>
To: <a href="mailto:chchrobotics@lists.ourshack.com" target="_blank" rel="noreferrer">chchrobotics@lists.ourshack.com</a><br>
Subject: [chbot] Fibre optic scraps? / synthetic ulexite?<br>
Message-ID: <<a href="mailto:E2349763-9281-4FC7-AA26-D8A31798E123@gmail.com" target="_blank" rel="noreferrer">E2349763-9281-4FC7-AA26-D8A31798E123@gmail.com</a>><br>
Content-Type: text/plain; charset=utf-8<br>
<br>
I’ve been obsessed with ulexite for years and was curious if I could make a high quality synthetic by using epoxy resin to glue a bunch of fibre optic pieces together that I could cut/turn/mill into a solid that would (ideally) have the weird quality of making an image appear on the top of it.<br>
<br>
1. You reckon it would work?<br>
2. Would gluing fibre optic strands together ruin their optical isolation?<br>
3. Know anybody with some scrap optical wire or a super cheap source for fibre optic scraps/b-grade stuff I could play with?<br>
<br>
<br>
Cheers!<br>
-Andrew<br>
(No, the other one)<br>
...<br>
(Not that one either)<br>
...<br>
(Ok, fine... <sigh> the fat American one… yeah, that one.)<br>
<br>
<br>
------------------------------<br>
<br>
Message: 4<br>
Date: Sat, 3 Dec 2022 19:20:46 +1300<br>
From: Mark Atherton <<a href="mailto:markaren1@xtra.co.nz" target="_blank" rel="noreferrer">markaren1@xtra.co.nz</a>><br>
To: <a href="mailto:chchrobotics@lists.ourshack.com" target="_blank" rel="noreferrer">chchrobotics@lists.ourshack.com</a><br>
Subject: Re: [chbot] Fibre optic scraps? / synthetic ulexite?<br>
Message-ID: <<a href="mailto:5578cf9b-179d-d22b-816d-7d1c48cc86a3@xtra.co.nz" target="_blank" rel="noreferrer">5578cf9b-179d-d22b-816d-7d1c48cc86a3@xtra.co.nz</a>><br>
Content-Type: text/plain; charset=UTF-8; format=flowed<br>
<br>
Sounds possible to me. The trick may be to keep the bundle coherent <br>
during gluing.<br>
<br>
<br>
<br>
On 12/3/2022 6:29 PM, andrew dean wrote:<br>
> I’ve been obsessed with ulexite for years and was curious if I could make a high quality synthetic by using epoxy resin to glue a bunch of fibre optic pieces together that I could cut/turn/mill into a solid that would (ideally) have the weird quality of making an image appear on the top of it.<br>
> <br>
> 1. You reckon it would work?<br>
> 2. Would gluing fibre optic strands together ruin their optical isolation?<br>
> 3. Know anybody with some scrap optical wire or a super cheap source for fibre optic scraps/b-grade stuff I could play with?<br>
> <br>
> <br>
> Cheers!<br>
> -Andrew<br>
> (No, the other one)<br>
> ...<br>
> (Not that one either)<br>
> ...<br>
> (Ok, fine... <sigh> the fat American one… yeah, that one.)<br>
> _______________________________________________<br>
> Chchrobotics mailing list <a href="mailto:Chchrobotics@lists.ourshack.com" target="_blank" rel="noreferrer">Chchrobotics@lists.ourshack.com</a><br>
> <a href="https://lists.ourshack.com/mailman/listinfo/chchrobotics" rel="noreferrer noreferrer" target="_blank">https://lists.ourshack.com/mailman/listinfo/chchrobotics</a><br>
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> Meetings usually 3rd Monday each month. See <a href="http://kiwibots.org" rel="noreferrer noreferrer" target="_blank">http://kiwibots.org</a> for venue, directions and dates.<br>
> When replying, please edit your Subject line to reflect new subjects.<br>
<br>
<br>
<br>
<br>
------------------------------<br>
<br>
Message: 5<br>
Date: Sat, 3 Dec 2022 22:13:10 +1300<br>
From: Helmut Walle <<a href="mailto:helmut.walle@gmail.com" target="_blank" rel="noreferrer">helmut.walle@gmail.com</a>><br>
To: <a href="mailto:chchrobotics@lists.ourshack.com" target="_blank" rel="noreferrer">chchrobotics@lists.ourshack.com</a><br>
Subject: Re: [chbot] Fibre optic scraps? / synthetic ulexite?<br>
Message-ID: <<a href="mailto:d13ef30f-2f40-6c3a-a19c-7cda2f850f41@gmail.com" target="_blank" rel="noreferrer">d13ef30f-2f40-6c3a-a19c-7cda2f850f41@gmail.com</a>><br>
Content-Type: text/plain; charset=UTF-8; format=flowed<br>
<br>
Sounds a bit like a fibre optic faceplate, which exists as a commercial product. But while <br>
possible in principle, this idea of embedding fibres in resin is unlikely to work well in <br>
practice, because:<br>
<br>
a) a visible image relies on the presence of light that the eye can see; but how will you <br>
illuminate the original image if you put the flat image-sized fibre bundle on the original? <br>
(Sure, if the original is translucent you can illuminate from the back... In theory you could <br>
also illuminate from the viewing side of the fibre bundle through the same, however in order to <br>
make that work you would need a polished transparent surface there, and that would then mean <br>
that the transferred image simply exits the same polished surface without becoming visible...)<br>
<br>
b) if you are thinking of using telecommunications optical fibre it won't work well if at all, <br>
because that kind of fibre consists of a core and cladding, where only the core transfers light, <br>
however the cladding takes up the larger part of the cross-section - so you won't be able to <br>
couple much light into the fibres. So you are probably looking at using something like these <br>
transparent plastic wires used in fibre optic decorative lamps. However, these are very probably <br>
made from just one plastic material, thus relying on the refractive index step from the plastic <br>
to the surrounding air. If you are embedding them in a resin then that resin needs to have a <br>
lower refractive index than the wire to make it work. Even so, it probably won't work well - see <br>
point a) above.<br>
<br>
c) even if you can couple a sufficient amount of light into the end of the fibre bundle sitting <br>
on the original, how are you going to make the image visible on the open end? The simplest <br>
approach might be to frost that end by sanding it finely. But that will be very inefficient as <br>
it will lead to a further loss of light, because much light will simply pass through into the <br>
open air and will thus be lost for imaging.<br>
<br>
I would think it may work somewhat, maybe to a degree where you can see something in a dark <br>
room, but it is highly unlikely that this will be useful as a daylight application with <br>
reasonable effort.<br>
<br>
All of that being said, fibre optic imaging bundles are commercially available, but they are <br>
generally being used together with optics that couple the original image into the fibre bundle <br>
efficiently at the object end, and further optics that efficiently couple the image out of the <br>
fibre bundle at the viewing end. These bundles are used for applications like endoscopes. And <br>
then there are the aforementioned fibre optic faceplates. More info on them here<br>
<br>
<a href="https://www.photonics.com/Category.aspx?CatID=24500" rel="noreferrer noreferrer" target="_blank">https://www.photonics.com/Category.aspx?CatID=24500</a><br>
<a href="https://incomusa.com/faceplate/" rel="noreferrer noreferrer" target="_blank">https://incomusa.com/faceplate/</a><br>
<a href="https://www.explosionproofvideoscopes.com/fiber-optic-image-bundle/" rel="noreferrer noreferrer" target="_blank">https://www.explosionproofvideoscopes.com/fiber-optic-image-bundle/</a><br>
<a href="https://fibertech-optica.com/assemblies/fiber-optic-bundles/" rel="noreferrer noreferrer" target="_blank">https://fibertech-optica.com/assemblies/fiber-optic-bundles/</a><br>
<a href="https://www.edmundoptics.com/f/fiber-optic-image-conduits/11464" rel="noreferrer noreferrer" target="_blank">https://www.edmundoptics.com/f/fiber-optic-image-conduits/11464</a><br>
<br>
All of this stuff is pretty hard to make on your kitchen bench.<br>
<br>
And regarding question "2. Would gluing fibre optic strands together ruin their optical <br>
isolation?" - it depends... If you are doing this with telecommunications fibre (either monomode <br>
or multimode) it won't affect their performance, because they have a well-defined optical <br>
cladding layer around the light-conducting core. But if you are using a plastic "wire" made from <br>
one homogenous material then embedding in a resin may well destroy its light-conducting <br>
properties, particularly if the refractive index of the resin is the same or greater than that <br>
of the "wire".<br>
<br>
I would recommend getting the physics of the whole system sorted first before starting to <br>
experiment.<br>
<br>
Kind regards,<br>
<br>
Helmut.<br>
<br>
<br>
On 03/12/2022 19:20, Mark Atherton wrote:<br>
> Sounds possible to me. The trick may be to keep the bundle coherent during gluing.<br>
> <br>
> <br>
> <br>
> On 12/3/2022 6:29 PM, andrew dean wrote:<br>
>> I’ve been obsessed with ulexite for years and was curious if I could make a high quality <br>
>> synthetic by using epoxy resin to glue a bunch of fibre optic pieces together that I could <br>
>> cut/turn/mill into a solid that would (ideally) have the weird quality of making an image <br>
>> appear on the top of it.<br>
>><br>
>> 1. You reckon it would work?<br>
>> 2. Would gluing fibre optic strands together ruin their optical isolation?<br>
>> 3. Know anybody with some scrap optical wire or a super cheap source for fibre optic <br>
>> scraps/b-grade stuff I could play with?<br>
>><br>
>><br>
>> Cheers!<br>
>> -Andrew<br>
>> (No, the other one)<br>
>> ...<br>
>> (Not that one either)<br>
>> ...<br>
>> (Ok, fine... <sigh> the fat American one… yeah, that one.)<br>
>> _______________________________________________<br>
>> Chchrobotics mailing list <a href="mailto:Chchrobotics@lists.ourshack.com" target="_blank" rel="noreferrer">Chchrobotics@lists.ourshack.com</a><br>
>> <a href="https://lists.ourshack.com/mailman/listinfo/chchrobotics" rel="noreferrer noreferrer" target="_blank">https://lists.ourshack.com/mailman/listinfo/chchrobotics</a><br>
>> Mail Archives: <a href="http://lists.ourshack.com/pipermail/chchrobotics/" rel="noreferrer noreferrer" target="_blank">http://lists.ourshack.com/pipermail/chchrobotics/</a><br>
>> Meetings usually 3rd Monday each month. See <a href="http://kiwibots.org" rel="noreferrer noreferrer" target="_blank">http://kiwibots.org</a> for venue, directions and dates.<br>
>> When replying, please edit your Subject line to reflect new subjects.<br>
> <br>
> <br>
> _______________________________________________<br>
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> Meetings usually 3rd Monday each month. See <a href="http://kiwibots.org" rel="noreferrer noreferrer" target="_blank">http://kiwibots.org</a> for venue, directions and dates.<br>
> When replying, please edit your Subject line to reflect new subjects.<br>
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Subject: Digest Footer<br>
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End of Chchrobotics Digest, Vol 183, Issue 1<br>
********************************************<br>
</blockquote></div>