Like Finski says, don't do it.
The reason that honey is uncapped is usually that it isn't honey yet.
The moisture content will be too high, making it prone to fermentation and gving your bees dysentery when you feed it back. Honey is highly hygroscopic too, so it's going to draw in water at every opportunity, worsening the problem.
Cut the comb away as you need to, then put it in a tray in an empty super on top of the hive (under the roof). The bees will clean out the wax in a matter of a day or two and finish processing and storing the honey properly. You get a nice tidy hive and a nice bit of cleaned wax, and the honey later on when you extract.