Quite a few years ago I bought a thousand frames from Walter T. Kelley with no groove in the top bar and no groove in the bottom bar. I had cut some down from time to time and cut a bevel on the top bar from time to time, but I never got around to building a jig to do it en masse. I finally built this "sled" to hold the bar while I bevel it. I have to take it out and flip it around for the second cut but it works quite nicely and keeps my fingers away from the blade. For more information on foundationless: http://www.bushfarms.com/beesfoundationless.htm
I consider propolizing a good trait for bees (maybe not for the beekeeper). Here is a mating nuc I found this year. The drilled hole is about 5/8". The reduced hole is about 5/16".
It wasn't working right and then it would and then it wouldn't. This is what I found. It couldn't get out, so I left it and used another smoker. It was finally out after two days.
We needed to feed because of a dearth and we still needed to finish building up the 8 frame nucs for winter. We bought 50 six gallon buckets and bought 3,450 pounds of sugar in 25 lb bags. We worked out the maximum strength we could do with hot water from my tap (140 F) and not have it crystallize out. We put one 25 pound bag in each bucket with a heaping tablespoon of ascorbic acid, then 18 pints of water and stir it with a five gallon paint stirrer. After 10 to 30 minutes we stir it again.