I'd like to update some content about DYI LED exposure units I posted about 2 years ago.
First:
-I don't sell these
-I don't think this unit functions well with Dual Cure (I've switched to Chromolime pp emulsion)
-I suspect halftone dot exposure is restricted to modest parameters (maybe 20% to 80%)
-I acknowledge this design modification probably only makes sense for a user looking to upgrade from a Blacklight fluorescent unit
Second:
-I did backtrack and replace 50% of the LED strips I originally installed (due to poor LED quality, which can be seen in the video as dimmer output)
-I raised the LED mounting to 2" below the glass
-The unit has instant start-up and uses about 300 watts of power and modification would cost about $200 in materials (EBAY)
- It works great for my business (mostly 1-3 spot color designs, with limited halftone requirements)
The unit now operates as follows:
225 S mesh exposes at 12 seconds (180 at 13 seconds, 150 at 14 seconds)
Shorter exposure time is possible but hampers reclaim
https://www.youtube.com/watch?v=RQTXNp4U6pE&feature=youtu.be