Entrance reducer

[Ttankofish1]

I built my hives from plans on this sight and they came out awesome. I still need to make an entrance reducer. What should be the size of the openings. Also when starting with a nuc do you still use the smallest opening.

[rkereid]

Most traditional entrance reducers fit the 3/4" slot between the bottom board and bottom box. The entrance slot is usually 3/8" high by about 4" for the large one and 1" for the small one, but these can vary depending on the situation or beekeeper preference. I wouldn't go over 3/8" high as I have seen mice chew only a small amount to gain access.

To avoid robbing, I often reduce nuc entrances down to one bee width and height.

[Ttankofish1]

The one bee hieght and width would be smaller than the 1" opening so should I make a smaller temporary opening? When the hive is much stronger and no reducer should I make something to reduce the height to 3/8"?

[Mr.Beeman]

I run mine 3/8" tall by 1/2" wide to start. Then, once it's an established - strong hive, I will open it all the way up to 3/8" tall by 2 1/2" wide.
I've seen some open the entire opening up and run with it.... wierd.

[rkereid]

The one bee hieght and width would be smaller than the 1" opening so should I make a smaller temporary opening? When the hive is much stronger and no reducer should I make something to reduce the height to 3/8"?

Yes, adjust the entrance based on the hive's strength. Any small block of wood or even sticks will work temporarily.