No, before polishing cut a groove about half way through the axle, after polishing clamp the wood end in a vise, hold a large screwdriver/chisel in the groove and bend it by tapping on the screwdriver/chisel with a rubber mallet or hammer. In your case the exact degree of bend doesn't matter too much... shoot for 3-5 degrees. You should be able to see the bend... if you bend it too much it won't fit through the wheel bore and you will have to bend it back a little.
You can cut the groove with a small file while spinning the axle in a drill press or even a cordless drill. If you happen to screw up and mark up the axle shaft then orient that side up when you bend your axle. You wheel rides on the bottom of the axle and the scratches will be on the top.