The reason I use 8 frames in honey supers:

With 8 frames there is bee space between sidebar shoulders, no burr comb built.
Using 9 frames you have to scrape side bars if using frames in brood
nest. It can also cause problem in uncapper. In general it gets harder
to work boxes with wax between shoulders. You can't slide frames
easily when blowing bees out.

With 8 frames there is one bee space less = more honey in box.
9% less investment in frames and foundation.
When uncapping usually is determining the speed of extracting, you are
looking at 9% faster extracting too. Over time this will mean
considerable amount of money in saved labour cost.

When frames are properly drawn out you can set the uncapper knives
wider and leave more wax for the bees to start from next time.

And don't worry about spacing frames out, after a week putting boxes
on hives you got it in the fingers and it's done without thinking. It
takes only a few seconds per box.

--
Regards

P-O Gustafsson
[log in to unmask]  http://beeman.se   SKYPE:beemansweden

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