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Build Your Own SLA/SLS • 5.5 inch (2560x1440p LCD) with UV LED array for under $600. :Proniks Sla 3d Printer, - Page 18
Page 18 of 44

Re: 5.5 inch (2560x1440p LCD) with UV LED array for under $600. :Proniks Sla 3d Printer,

Posted: Tue Jan 10, 2017 6:23 pm
by idifix
Mandrea,
do you have a Fresnel lens below your LCD module? Are there advantages?

Re: 5.5 inch (2560x1440p LCD) with UV LED array for under $600. :Proniks Sla 3d Printer,

Posted: Tue Jan 10, 2017 6:33 pm
by russiangems

Re: 5.5 inch (2560x1440p LCD) with UV LED array for under $600. :Proniks Sla 3d Printer,

Posted: Tue Jan 10, 2017 6:35 pm
by russiangems

Re: 5.5 inch (2560x1440p LCD) with UV LED array for under $600. :Proniks Sla 3d Printer,

Posted: Wed Jan 11, 2017 5:06 pm
by sechsteelement
Hallo,

@russiansgems, I saw a post from you with the lcd and a mikroskope picture with a crack.
Have you seen normal RGB colour filters? I do a litte research, how to modify LCD for UV-light and I think there are 2 possible uv-light filters in the LCD:

1. RGB color Filters wich filters other wavelengths
2. Materials with filter properties. Fore example some Polymers and glases filtered also UV-light. I found some informatione of an acrylic glas poylmere which is developed for terrariums.

I know you can not change a LCD production for some 3d printing guys so I am searching of possibilities to modify the LCDs. Maybe it is possibel to remove the RGB filters, but I think the glas plates are glued together.

Regards

Re: 5.5 inch (2560x1440p LCD) with UV LED array for under $600. :Proniks Sla 3d Printer,

Posted: Thu Jan 12, 2017 12:16 am
by russiangems

Re: 5.5 inch (2560x1440p LCD) with UV LED array for under $600. :Proniks Sla 3d Printer,

Posted: Fri Jan 13, 2017 8:20 am
by mandrea
Ok Folk,
  the resin FTD Industrial Blend arrived,
I immediately put at work the "baby",
response: The printer would be exceptional if it had a more precise Z axis (see wedeling effect), I ordered an anti backlash to solve the problem



3 x burn @ 70 sec
normal @ 7 sec
0.025 micron

Re: 5.5 inch (2560x1440p LCD) with UV LED array for under $600. :Proniks Sla 3d Printer,

Posted: Sat Jan 14, 2017 10:22 am
by Cabo
50W led mod for the printer. Huge fan and fresnel lens, 50W led driver. Done a test with Funtodo IB at 50 microns, the layer time is down from 10 sec to 5 sec.
IMG_20170114_141606.jpg

Re: 5.5 inch (2560x1440p LCD) with UV LED array for under $600. :Proniks Sla 3d Printer,

Posted: Sat Jan 14, 2017 1:22 pm
by Odd

Re: 5.5 inch (2560x1440p LCD) with UV LED array for under $600. :Proniks Sla 3d Printer,

Posted: Sat Jan 14, 2017 2:34 pm
by LacoDeLoco
I second,
can you post the parts needed?
Thanks

Re: 5.5 inch (2560x1440p LCD) with UV LED array for under $600. :Proniks Sla 3d Printer,

Posted: Sat Jan 14, 2017 3:44 pm
by Cabo
This is the fan+lens: http://www.ebay.co.uk/itm/252683611628? ... EBIDX%3AIT

Led driver: https://www.aliexpress.com/item/10W-20W ... 0.0.1hxgpK

50W Led: https://www.aliexpress.com/item/High-Po ... 0.0.1hxgpK

I've cut a bigger hole on the bottom to fit the bigger fan and added taller legs to allow for the extra space needed.

The image is a paper over the LCD, it is a bit uneven, but nothing too extreme.