The Legendary BLF Integrating Sphere starts here! (Delivered)

[Joshk]

djozz did a 15 cm one here. Maybe he can comment.

Integrating sphere #4 (the fast and cheap one)

(Wait, I never mentioned sphere #3 ! [image]. Well, I did make it, but although sphere #3 was supposed to be the simple one, during the build I got carried away and added all kinds of useful things. I have not done a build thread on it yet, but I will, one of these days.) Another day, another integrating sphere. The aim of this one is to really be simple: see how much I can leave out without sacrificing too much on the performance. In this integrating sphere is much more thinking time involv…