Diffuser for 2020 profile desk lamp

I like and plan on building one of gadgetmind's desk lamps- I will use strips of smd5630 leds. From using them on my printer, I know I will want to have a diffuser to improve the light quality. This is a fist hack at one and a placeholder for an other mods I come up with as I am building the lamp. This should be printed in white- This first cut has a 3mm lens thickness which worked out well on the one I did for my printer.

2018.02.19 Update- printed a copy of this and it was a little too t