UV LEDs instead of projector?

[jesse]

Would it be possible to use a UV LED matrix on the DropLit to cure the resin?

For instance: https://www.kickstarter.com/projects/82 ... e-3d-print" onclick="window.open(this.href);return false;

1000 smd UV LEDs are about $50 on ebay.

[teoman]

Yep, you could make it work.

But.... and there is always a but, getting the optics to work will be a major problem.

[jesse]

Maybe SeeMeCNC could produce a DropLit which is a smaller/simpler version using UV LEDs.

Similar to the way they created the Orion.

Does anyone know of monochrome displays that can be made transparent/opaque?

[teoman]

Hnmmm....

Some android devices have Amoled displays (each pixel is like an LED). And the glass on them could be suitable to directly build upon. So if you poured the resin on top you could use that as your build surface theoretically.
http://www.samsung.com/global/microsite ... specs.html" onclick="window.open(this.href);return false;

Wonder if this would work...

Sorry if I am hijacking your thread.

[jesse]

I was thinking more like this: [img]http://i.imgur.com/oimkAOf.jpg[/img]

But I like your idea of printing directly on small phone screen. Can Amoled output UV light?

[teoman]

OR something like this:
http://www.instructables.com/id/DIY-LCD ... /?ALLSTEPS" onclick="window.open(this.href);return false;

[Polygonhell]

There are a couple of people claiming to have working LCD printers, using an array of LEDS, one is using a retina display from an iPhone, the other looks to be using something smaller. LCD's will not pass UV light, but there seems to be some overlap in the near UV light range that will both pass through the LCD and cure the resin. The advantage is they can be much more compact.

[jesse]

I wonder if SeeMeCNC could get UV LED screens made with sufficient resolution. One way would be to use lots of UV pixels.

Another method would be to use a monochrome screen (like cheap calculators) with a UV backlight shining through the translucent pixels and being blocked by the black pixels.

In my opinion, buying a projector is a big investment and work. The iBox Nano is about $250 total. Obviously the iBox is not in the same league for build volume and resolution.

[jesse]

[youtube]http://www.youtube.com/watch?v=gmlvujD2oHI[/youtube]

[bubbasnow]

Would it be possible to use a UV LED matrix on the DropLit to cure the resin?

For instance: https://www.kickstarter.com/projects/82 ... e-3d-print" onclick="window.open(this.href);return false;

1000 smd UV LEDs are about $50 on ebay.

wow that looks cool, i wonder how they are focusing the led for the required resolutions

[Polygonhell]

Would it be possible to use a UV LED matrix on the DropLit to cure the resin?

For instance: https://www.kickstarter.com/projects/82 ... e-3d-print" onclick="window.open(this.href);return false;

1000 smd UV LEDs are about $50 on ebay.

wow that looks cool, i wonder how they are focusing the led for the required resolutions

As far as I can tell it's using a raspberry PI and a small LCD screen, probably 3 inches diagonal. The LED's just act as a backlight, so they wouldn't need focussing.

[artexmg]

Would it be possible to use a UV LED matrix on the DropLit to cure the resin?

For instance: https://www.kickstarter.com/projects/82 ... e-3d-print" onclick="window.open(this.href);return false;

1000 smd UV LEDs are about $50 on ebay.

wow that looks cool, i wonder how they are focusing the led for the required resolutions

Looks really cool ... but, as far as I can see, the resolution is not that great.