I have some photo-etched sawblades…I think I got them from Squadron Shop…these are really thin and do a great job. They come in different shapes and sizes. The round one is great for starting a cut…pull-push it with small strokes to start. There are several shapes in addition to standard “flat blades”. One is pear shaped, wider at the top and pointed at the bottom, with teeth all around. I recently used them to cut out the flaps on a 1/72 scale Me 262 with great results. Work slow.
Also, to cut friction on blades I have rubbed bar soap on the blade. Tried liquid soap but that gets messy becasue it spreads around.
I have also found that in some cases a standard single-edge razor blade is better that the #11 blade. The razon blade is of a uniform thikness and works better in some applications. I place the blade in a “box cutter” that I got at an office supply store. The cutter holds the blade nicely and cuts down on my need for band-aids.
Have fun…