backlight led box for drawings

designed with fusion360 ,
parametric backlight box for drawings.
you can set as parametric customisable dimensions : length, height and width of the box.
fusion360 file provided
In this exemple the opalin acrylic is : 250x350mm ; height of the box 30mm

I use :
- a standard 12v 2A DC 220v AC power adapter with a positive centre pin
- an inline power switch dimmer ON/OFF 2.1X5.5mm cable jack 12V
- a 470microFarad 35V capacitor to avoid flickering
- 7 strips 300mm cut out of a 5m strip 12V led 5050 white , 60 leds /m