My idea was to build a UV box for PCB with dimension 29 x 18 cm.
First step was with only 90 UV led diodes and will increase the number to 135 UV led diodes soon.
I use 2 x 1 Kohm/0,25W in parallel for 20 mA current for each diode
12.80 Volts at 1,9 Amps PSU used
18 mm grid squares and 80 mm to focus.
First test with 90 pieces UV leds
MDF box : 29 cm x 18 cm (internal dimension)
: 10 cm high
135 piecers UV leds (135 pieces x 0.020 A/piece = 2.70 A)
wood works = glue and screw
3 mm clear glass mounted
Final Project