pretty sure i'm thinking straight on it, but want to check.
once i have them made and fitting properly, i assume best way to get tool holder holes to line properly is to
1 fit it and using centre drill in collet mark hole positions.
2 drill out whilst still fitted using drill in collet.
first pic is part i want to make second is lathe when i first got it.
my brain says yes will keep it all aligned but also says it's to simple must be missing something.
so going to check here before i do first one ( need 11 in total ) so i don't waste steel.
i got lathe with load of imperial collets while ago for approx $20.