The spreadsheet has been produced by Christopher Taylor.

To use it, enter the worm ratio for the table at the top and the number of teeth/divisions required.

Choose any convenient solution that offers a whole number of holes in the right hand column.

If your dividing discs have different numbers of holes, youi can change the numbers in the left hand column.

Download Christopher's spreadsheet HERE.

For more information and discussion, please see the thread HERE.


NOTE: The spreadsheet is in xlsx form a, this can be opened by most spreadsheet programs, but if you have an older version of Excel you may need to download an update from Microsoft.