To follow on from the post on how I sharpen drawknivies. Here is how to put new handles on it. I will assume that either you have handles, or can turn new handles, either on a pole lathe or a modern electric lathe. If turning on a pole lathe either turn green, dry the handles, and then turn again when dry to fit the ferules, or turn from seasoned wood. I often turn dry wood on the pole lathe if I want round turnings. If possible use the original ferules or use new ones or cut some from brass or copper pipe. The ferules will need to be put onto seasoned wood, we do not want the wood to shrink and the ferules to become loose. This is a C Whitehouse drawknife, and I turned the the handles to the same pattern as the originals.
Do not push the handle all the way onto the tang, leave enough so you can hammer the handle firmly onto the tang. Pull the handle off as soon as you have got far enough down the tang. It is best to let the tangs cool down slowly as quenching in water can harden the tang and make it brittle.
I use the same general principles for putting handles onto chisels.