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Build Your Own SLA/SLS A forum dedicated to helping you build your own SLA/SLS-based 3d printer 2018-01-11T06:02:16-04:00 http://www.buildyourownsla.com/forum/feed.php?f=6&t=2850 2018-01-11T06:02:16-04:00 2018-01-11T06:02:16-04:00 http://www.buildyourownsla.com/forum/viewtopic.php?t=2850&p=25253#p25253 <![CDATA[Re: 350x200 mm Build Platform, UV laser or DLP Projector?]]> Statistics: Posted by arlingtonarcher — Thu Jan 11, 2018 6:02 am

]]> 2015-04-04T15:11:02-04:00 2015-04-04T15:11:02-04:00 http://www.buildyourownsla.com/forum/viewtopic.php?t=2850&p=9386#p9386 <![CDATA[Re: 350x200 mm Build Platform, UV laser or DLP Projector?]]> To have a 20mm wide image the projector must be very very close to the resin.
Don't know if is it possibile to have such a near projection without losing the focus.

I'm quite new in this world, maybe someone else can give you more adivice!

Statistics: Posted by odino — Sat Apr 04, 2015 3:11 pm

]]> 2015-04-03T13:16:22-04:00 2015-04-03T13:16:22-04:00 http://www.buildyourownsla.com/forum/viewtopic.php?t=2850&p=9363#p9363 <![CDATA[Re: 350x200 mm Build Platform, UV laser or DLP Projector?]]> I'll take another path. I have a question about the projectors. In most cheap DLP printers, the build area is between 50 and 100 mm wide. Does anyone know what happens if you try to make a total print width of 20 mm? ¿Resolution is lost by loss of focus, or must be changed the optics to get this total build area?
My idea would be to get a high resolution XY (about 0.02 mm) into a small object, divide the piece in parts, print each piece separately, and then glue the pieces together.

I hope someone can give me some advice about this. I think it should be a good solution. Thank you !!

Statistics: Posted by ave_maker — Fri Apr 03, 2015 1:16 pm

]]> 2015-03-29T17:02:49-04:00 2015-03-29T17:02:49-04:00 http://www.buildyourownsla.com/forum/viewtopic.php?t=2850&p=9281#p9281 <![CDATA[Re: 350x200 mm Build Platform, UV laser or DLP Projector?]]> I'm a DLP user here, which gives me 192x108 mm build area max at 100 micron XY.

I'm also very interested in increasing build area,
anyone can please give good advice re GALVO laser setup?
some more info. - huge thanks in advance!

Statistics: Posted by zerospace — Sun Mar 29, 2015 5:02 pm

]]> 2015-03-29T14:47:08-04:00 2015-03-29T14:47:08-04:00 http://www.buildyourownsla.com/forum/viewtopic.php?t=2850&p=9280#p9280 <![CDATA[Re: 350x200 mm Build Platform, UV laser or DLP Projector?]]> Some time ago I have seen in action a professional/commercial galvo-laser printer (made from digital wax), with a lager build area (I think about 250mmx250mm), and it was pretty fast.
Maybe not like a DLP projector, but pretty fast. On they web site they said they could print 3000 mm/sec.

And it has a nice resolution!
Check this image (sorry for the bad focus)
This is a sample they give to me. i think it's made with wax-like material.
link to image


laser+galvo is an interesting build pattern. But I'm "to afraid" (lol yes...) to work with laser at the moment...

Statistics: Posted by odino — Sun Mar 29, 2015 2:47 pm

]]> 2015-03-29T14:14:51-04:00 2015-03-29T14:14:51-04:00 http://www.buildyourownsla.com/forum/viewtopic.php?t=2850&p=9278#p9278 <![CDATA[Re: 350x200 mm Build Platform, UV laser or DLP Projector?]]>
I think the laser choice is the most affordable for testing. While the laser is slower, there is always the option of dividing the build area into equal parts, and several lasers works simultaneously, but it's something I'll have to evaluate.
Anyone know what resolution can be achieved with the UV laser?

Statistics: Posted by ave_maker — Sun Mar 29, 2015 2:14 pm

]]> 2015-03-26T17:11:06-04:00 2015-03-26T17:11:06-04:00 http://www.buildyourownsla.com/forum/viewtopic.php?t=2850&p=9218#p9218 <![CDATA[Re: 350x200 mm Build Platform, UV laser or DLP Projector?]]> Statistics: Posted by Phife — Thu Mar 26, 2015 5:11 pm

]]> 2015-03-26T16:04:33-04:00 2015-03-26T16:04:33-04:00 http://www.buildyourownsla.com/forum/viewtopic.php?t=2850&p=9217#p9217 <![CDATA[Re: 350x200 mm Build Platform, UV laser or DLP Projector?]]> The math is simple: HD projector is 1920x1080
printer resolution = (build area size / projector resolution)
350/1920=0.18mm

Statistics: Posted by dangre — Thu Mar 26, 2015 4:04 pm

]]> 2015-03-26T15:37:04-04:00 2015-03-26T15:37:04-04:00 http://www.buildyourownsla.com/forum/viewtopic.php?t=2850&p=9214#p9214 <![CDATA[Re: 350x200 mm Build Platform, UV laser or DLP Projector?]]> Statistics: Posted by Zenon — Thu Mar 26, 2015 3:37 pm

]]> 2015-03-26T14:21:05-04:00 2015-03-26T14:21:05-04:00 http://www.buildyourownsla.com/forum/viewtopic.php?t=2850&p=9209#p9209 <![CDATA[350x200 mm Build Platform, UV laser or DLP Projector?]]>
I want to make a SLA printer with a 350 mm long (about 14'') build platform​​ and an approximate width of 200 mm (8' '), with the highest possible resolution and lowest build time. My idea is to print artistic pieces (like a shoe sole) with high level of detail, in both, Z and XY axis. I had thought that a DLP projector was the best option as it cures a whole layer at once, instead of the laser that must to do a raster of the entire layer. What I am not clear is whether, for a large area, can a projector guive me the resolution I need, or only works fine for small parts?
I think any of yours have had the same problem, and surely you can give me ideas about this.
If the solution is more expensive projector, would be no problem.
Can anyone tell me which is the most suitable metod for this size of piece and an high resolution? Thank You!

Statistics: Posted by ave_maker — Thu Mar 26, 2015 2:21 pm

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