The problem doing it in 6" is that the bear paw traditionally consists of 7 equal sections, and so it is most easily done with 7" or 14" blocks. Sometimes the center portion is increased so it is 8". If you must make it as a 6" block you will be dealing with measurements of 1/8 and 1/16", and even then they will not be quite accurate since 6" isn't divided by 7 nicely.