Hi all, probably stupid idea but why not to ask (:P). Do you think that it would be possible to make clasic FDM printer which would use UV resin flowing from the head with UV diod instead of PLA and other filaments? I mean if there would be possible to change the normal hotend for something where the UV rasin would slowly flow out and would be imediately solidify by UV light (some small cheap UV diod if suitable). Like I said, it is probably stupid crazy idea (:P). I have only experiences with couple of normal cartesian and delta printers and no experiences with UV resin printers. But I just thought to make something what would be combination of both. Sorry in advance for such stupidity (:P) and thanks for your comments. https://reprap.org/forum/read.php?2,841489,841489#msg-841489 Tue, 21 Apr 2026 06:37:41 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?2,841489,888198#msg-888198 https://reprap.org/forum/read.php?2,841489,888198#msg-888198
The curing time depends on droplet size too, activators/inhibiters and additives - some 10 milliseconds per droplet, but I'm either dispensing/curing continuous with the nozzle-design, or (with the piezo-jetter) printing the complete slice, then curing it competely too by moving the UV-LED's in meandering paths to cure every bit.]]> VDX Developers Sun, 06 Feb 2022 15:33:21 -0500 https://reprap.org/forum/read.php?2,841489,888193#msg-888193 https://reprap.org/forum/read.php?2,841489,888193#msg-888193
I see that with your piezo valve dispenser, you were able to solidify drops. What resolution were you able to accomplish? How quickly were you able to cure the resin with the 4 led setup you shared a picture of?

Thank you!]]> Galamdring Developers Sun, 06 Feb 2022 12:10:19 -0500 https://reprap.org/forum/read.php?2,841489,841545#msg-841545 https://reprap.org/forum/read.php?2,841489,841545#msg-841545
[attachment 108718 9W-UV-LED.jpg]



And yes, normal 1W- or 3W-LED's are sufficient too - you can combine more of them to get higher powers:

[attachment 108719 UV-LED1.jpg]

[attachment 108720 UV-LED2.jpg]]]> VDX Developers Sun, 16 Dec 2018 03:32:07 -0500 https://reprap.org/forum/read.php?2,841489,841540#msg-841540 https://reprap.org/forum/read.php?2,841489,841540#msg-841540 o_lampe Developers Sun, 16 Dec 2018 02:16:25 -0500 https://reprap.org/forum/read.php?2,841489,841506#msg-841506 https://reprap.org/forum/read.php?2,841489,841506#msg-841506
With a piston dispenser this would be better in terms of dimensional stability.

Curing is best done with 405nm-diodes - there are some available with optical output powers of up to 3 Watts ... I've used 3Watts for printing (but my watercooled diodes can emit up to 9Watts)

Here and attached some images from "prints" with the piezo type:

[attachment 108710 37_800x400.png]


And some videos:
[vimeo.com]
[vimeo.com]
[vimeo.com]]]> VDX Developers Sat, 15 Dec 2018 14:56:51 -0500 https://reprap.org/forum/read.php?2,841489,841501#msg-841501 https://reprap.org/forum/read.php?2,841489,841501#msg-841501 boylucky Developers Sat, 15 Dec 2018 14:04:31 -0500 https://reprap.org/forum/read.php?2,841489,841495#msg-841495 https://reprap.org/forum/read.php?2,841489,841495#msg-841495 video here

But the question is if the UV resin could be used for it and if some cheap diods would be fast enough to make it solid when out of the nozle and if it would make a sense.]]> boylucky Developers Sat, 15 Dec 2018 13:36:25 -0500 https://reprap.org/forum/read.php?2,841489,841493#msg-841493 https://reprap.org/forum/read.php?2,841489,841493#msg-841493 reprap.org]

But actually I'm mostly using a piezo-valve-dispenser for UV curable resins - [reprap.org]]]> VDX Developers Sat, 15 Dec 2018 13:29:15 -0500 https://reprap.org/forum/read.php?2,841489,841491#msg-841491 https://reprap.org/forum/read.php?2,841489,841491#msg-841491 reprap.org]]]> VDX Developers Sat, 15 Dec 2018 13:26:16 -0500 https://reprap.org/forum/read.php?2,841489,841489#msg-841489 https://reprap.org/forum/read.php?2,841489,841489#msg-841489
probably stupid idea but why not to ask (:P). Do you think that it would be possible to make clasic FDM printer which would use UV resin flowing from the head with UV diod instead of PLA and other filaments? I mean if there would be possible to change the normal hotend for something where the UV rasin would slowly flow out and would be imediately solidify by UV light (some small cheap UV diod if suitable). Like I said, it is probably stupid crazy idea (:P). I have only experiences with couple of normal cartesian and delta printers and no experiences with UV resin printers. But I just thought to make something what would be combination of both. Sorry in advance for such stupidity (:P) and thanks for your comments.]]> boylucky Developers Sat, 15 Dec 2018 13:11:37 -0500