. Thanks for the compliment- it was an adventure! David, I think Tom King, who has vast experience in restoration work, would have a more informed opinion, but I think sash by hand is close to a lost art. Most of the planes are old & they need adjustments to make them function. I used the coping plane often but I also used a fret saw & gouge to cope. I guess that when the muntins wete done by hand special sticking boards or templates were used to prevent tearout by the coping plane. Without such specialized techniques, it is often easier to cope the muntins with a saw & gouge.