Thanks Joe!
I have one for my camera lenses, it works off a power bank and is extremely good when I get the incentive/health to take my D810 and 14mm f2.8 (Samyong) lens out to shoot the Milky Way.
I had previously made a resistor heating ring to fit one lens from online instructions and bought Nichrome wire to make a more flexible version but never got around to it.
What about the expensive dew strap/controller combinations (out of my price range)?
Stupid question most likely but are they worth the money?
One day I may find something in my price range on here in the classifieds.
I'm thinking the controller wouldn't be hard for me to to make my own using a switch mode power supply out of a computer. Since I do most of my stuff in my back yard where I have access to mains power it wouldn't be a bad idea and pick up a few dew straps when they become available in the classifieds.
They are mostly a 12 volt system are they not?
I just did some research and I already have several of the dimmer units many hobbyists seem to like for the systems. I bought them as speed controls for model trains.
https://content.instructables.com/FA...51eb0376ba742c