On large orders when I have the wood all gathered up, I cut to length all of the barrels plus 10% extra, same with the cutting the insert blanks. Then start drilling, first all of the barrels and then drill the inserts. Place on a shelf and let them rest a day or so. Then I turn all of the barrels one right after the other including pinning the bands etc.. Next I turn all of the inserts and then start my finish application to both parts. Then I cut all my toneboards, and finally tune them one at a time. If I am lucky on an order for 20, I will get 22 perfect calls made, but sometimes I mess up one, but that still leaves 21 for the laser print guy.
The main thing is to get deposit money up front, the cost of materials, the laser job and something extra. They won't be worth much to anyone except the buyer after you get them back from the laser guy. If it s not a custom job, I rarely ask for deposits, because I know I can usually sell them for what I quoted to the buyer. But for custom print or design stuff, I always want a deposit.
Marvin