Sorby Timberframing Chisels. Robert Sorby chisels for timberframing and log building are made to the highest specifications. In order to obtain the best results you should look after your chisels meticulously. With a fine, well cared for edge your chisels will give a smooth, clean cut. However, if you allow these edges to become chipped or rusty then wood will be torn rather than cut and will give a poor appearance. Sorby Timberframing Chisels are available beveled or non-beveled.