@Ian,
The center-to-center distance between the ball studs is 48mm.
Sorry it has taken me so long to reply, but I was on a sailboat in the Caribbean without much internet access for the past few weeks! :-)
ianlee74
about 8 years
What's the distance between the magballs (center to center)?
Haydn Huntley
over 8 years
The ideal size LED light ring has an 60mm outside diameter and a 50mm inside diameter.
You can find them inexpensively on eBay and Amazon.
steveb1475
over 8 years
Great effector. Just printing another for a spare as I just had to replace mine after a series of unfortunate events... I had a hard time finding a light ring with the correct dimensions to fit inside the groove, got a 60mm OD with a smaller ID that works ok though.
Thanks Haydn for the great design and thanks for the CF magnetic arms, they are working great!