here you get 2 dishes a 15 and 28
they are ready for your driving the bus , I also have the 1 1/8 in hole
this is for the set up to set the rims 15 for back 18 for top
the jig you need to make is based off the center of the mold and you use a 3/4 inch plumbers and a 6 inch nipple
note in the video I have sand paper on both dishes and one flat side. The 28 is used to set the neck angle into the sides and you only remove the material from the top of the sound hole to the neck block.
if you want to use other sizes than what I have here please let me know at email@example.com and we can make you custom dishes