I was discussing the tools called “rifflers” in this video. These are great for smoothing out the basic forms. It gives me a good sense of the volume and relationships of shapes to one another. Here is a source I was able to find that are closest to the ones I use:
https://www.leevalley.com/en-us/shop/tools/hand-tools/files-and-rasps/rifflers/20139-detail-rifflers
Learn Sculpture! 