In Japan they call the stage of drywall mudding "Putty". We've been looking forward to this as it is one of the parts of the construction we wanted to DIY. The builder thought this was a good idea, but needed the work done more quickly than we could get it done. So we began the work with an older Japanese man who is a professional. He showed us the proper Japanese technique which is slightly different than in the States...They like to use mesh tape first and the initial coat is done with a sandy mix that has fiberglass in it. We will be doing this for this next week or so in our free time.