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Thread: Potential resolution
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04-17-2014, 09:17 AM #51
No need to have more output on the card. You just need to use a different frequency (i.e.: 10-15 Khz = Kit 1, 20-25 Khz = Kit 2).
The Peachy Pro have a focused laser, but I dont know what they are using. Rylan seems pretty good at finding cheap stuff
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04-17-2014, 01:41 PM #52
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- Oct 2013
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I thought it uses a 405 nm laser. Glass doesn't block much until you get to the shorter wavelengths. 405 would pass completely through. So, a glass lens would work fine, even down to about 325 nm or so.
input_optics_graph.jpg
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04-17-2014, 02:27 PM #53
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I see glass does better at letting UVb pass through than I would have expected... A 405nm laser? I thought photopolymers needed UVb to cure them, which is a bit below that, and that's just barely at the edge of UVa.
Is the resin y'all are using a special formula for the Peachy, or is it standard Maker Juice?
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04-17-2014, 03:17 PM #54
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- Apr 2014
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- Fort Collins, Colorado, USA
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Feign,
I just checked and the laser is 405nm. This is known as UVA/VIS as it is at the top of the ultraviolet range and the bottom of the visible range.
Anyway, there are plenty of 405nm laser diodes : http://www.digikey.com/product-highl...er-diodes/3447
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04-17-2014, 10:13 PM #55
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SubG or SubG+, I can't recall which. But it's just the standard stuff. Cures up to 420nm, it says on the bottle.
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04-18-2014, 07:31 AM #56
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Well, I'm happy to be corrected like that! My research into photopolymers was clearly incomplete. So this stuff will cure with a regular blacklight (or blacklight LED), then. I'll have to get some of this to see what other things I can do with it while waiting.
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04-18-2014, 11:47 AM #57
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I am a bit lost. Is 420nm more or less ultraviolet than 405nm?
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04-18-2014, 11:56 AM #58
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405 is closer to what you would consider UV, 420 is more toward the visible blue/violet spectrum.
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04-18-2014, 11:58 AM #59
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- Cambridgeshire UK
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605px-Linear_visible_spectrum.svg.png
Visible spectrum vs wavelength (nm) from WikiLast edited by Pete; 04-18-2014 at 12:00 PM. Reason: give the picture a useful description
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04-18-2014, 12:54 PM #60
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Okay, I should have just looked that up, but thanks for clearing it up. So the resin will cure up to about half of the visible UV spectrum.
Qidi X Plus 3 Paper thin first...
05-27-2024, 01:15 AM in General 3D Printing Discussion