I am working on a craft project that requires accuracy I am finding hard to achieve. The attached piece shows a roughed out shape of a 3/4" piece of hardwood. The steps are 3/4x1/4x1/2". I hove found from experience that I cannot get an exact fit with a scroll saw so I have been cutting the step height a little heavy, then using a rasp, old wood file and sandpaper. Time consuming and not always satisfactory. I am looking for a better way. Any suggestions?