Would it be better to polish the input side to maximize light transmission and rough up the output side to defuse the light better and produce a more uniform “glow” with no hot spots?
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I concur.
I have some TGLASE that might be perfect for this.
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Has some good info - mentions making the holes the pipe goes into tapered for a friction fit.
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More brightness.
Same design, except a bit more refined/adjustable on the board end.
Now I just have to figure out what to do with the remaining 160 feet of PMMA light fiber.
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Cool!!
Cut into lengths, add the 3d prints, list on etsy/ebay, become millionaire.
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Dang I forgot to file a patent. Quick, nobody tell anyone for the next 12 months while I fill out the paperwork.
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Well 
guess that means we cant ask for the STL 
This is a VERY cool idea. It looks like it works great!
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Actually. You posted this on a private discussion, not in a public forum, so maybe you could get us all to non disclose and you could still file. Now you’ll just need to sell all your CNC stuff so you can pay the patent office.
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That will cost 10% of the royalty he gets 
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No, I think it’s well over 1000%.
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Well, if the etsy gig doesn’t work out, did you rebuild the covered patio already, or have a kid’s/shared room that would like overhead (or wall mounted) stars made from CNC’d panels with the lit fiber routed behind?
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Get some kits together??
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Looked again at brightness of PETG and fiber, from the videos, the PETG seemed pretty good, is there a stark contrast in real life, or do you think the PETG would be good enough? Pro builds could use fiber 
Asking because that’s a neat use of filament that might be appreciated by a printables contest, assuming you’re not ETSYing kits?
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Heck yeah that’d be cool to have an isometric line drawing of the cnc with the LEDs at the actual endstop positions.
Do I see evidence that you also established there is a minimum bend radius to that fancy fibre optic tubing Jamie? 
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Or laser cut, and we can label the endstops
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That is what we should call my buddy, dude is not to be left alone in your house if you know what I mean.
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