Spiralized Cone for Lithophane Lamps

Hello,

last Christmas (2018) we would surprise our Parents each with a Lithophane Lamp.

So i downloaded the V3 of this Thing:
https://www.thingiverse.com/thing:2730082

It was a good thing, but i remixed it a little:
https://www.thingiverse.com/thing:3536197

But for the LED-Stripe I want find a better Way. So i designed this spralized Cone.

It is big enough to hold an self-adhessive LED-Stripe with a Length of 1 Meter.
You could put the stripe from the lower - round and round -