Reply To: Grand Piano Repair Question Welcome! › Forums › General Woodworking Discussions › Woodworking Methods and Techniques › Grand Piano Repair Question › Reply To: Grand Piano Repair Question 10 July 2021 at 11:59 pm #720549 DarrenParticipant Others might have a better idea than this, but I would approach it like this. Make a copy of the piece, at least the area where the holes are, and replicate in it the holes from the original to the precision you need. Then I would fill the original piece with a mixture of epoxy and sawdust. Once dry and sanded I would use the copy as a template to replicate the holes precisely in the now filled original piece. Good luck! Darren.