I used to use them. Many many years ago they were kind of the diy/boutique standard. But the days of battery clips and building outside of the box are long gone.
Why? Do you measure and sort other components with broad tolerances, like pots? How would you even implement this knowledge? No commercial builder cares, why should you?
You'll be fine. This circuit is pretty slutty, it'll get along with just about anything. The advantage of rolling your own is that you can adjust the distance and angle of the LED/LDR combo to balance the response, unlike a vactrol which is fixed.
Ok. Thank you Robert. That is a choice I guess. But now my question is, what stress can that wire possibly be subjected to inside a metal box with no moving parts?!
Dunno. Maybe substitutions. I’ve build a couple of these now and I dig them. My customers praise them too. When I test pedals I use an Orange Terror and a Mosrite copy. The recording has a lot of reverb and compression that the pedal doesn’t make so I wonder if people are missing that part.
https://drill.taydakits.com/box-designs/new?public_key=TC9JU0tWUE1qTUY3WEhZL1NGcy9VUT09Cg==
Sign up here and then click the link again for the template.