I'm curious why you're restricting access. In early spring, I let the girls take as much as they want, when they want, to build up. When they stop taking the feed, or when the flow starts, I pull the feeders.
Yes, I added restricted feeder tubes to a few of the nuc feeders I built and I may do the same for some eight-frame feeders.it looks like its made for a 5 framer nuc -
in the spring nucs seems to get honey bound very fast - restriction is almost needed to keep them from swarming but lets them draw wax
I posted these pictures in the Photo Gallery, but I was hoping to get some feedback on the idea.
A separately screened 3/4" PVC pipe provides limited access for stimulative feeding in the Spring. A piece of screen is simply pushed into the normal (large) access area from the bottom.
The bees don't seem to mind and perhaps it avoids packing the brood area with syrup. In any case, it limits the number of bees that can "belly-up" to the trough.
As I mentioned in the original posting, I believe it will provide the stimulative effect while possibly limiting excessive filling of the broodnest. At least that was my intention.As was asked, why do you want to restrict access to the feed?