Dividing head math for large # of gear teeth

Something else to consider.
If your indexing plate has 1/8 inch holes and you leave 1/16 of material between the holes, Your plate will have a bolt circle of Ø7.580 so you will need an 8 inch diameter plate. Does your setup have room for a plate that big?

Another idea, Rather than doing the indexing on the rotory table to make a 127 hole indexing plate, You could jjust as easy set it up so that you each time you index 1/127 instead of drilling a hole, cut a tooth.
 
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