"The need for division in the model engineer's workshop is ever-present. The cheap way is to use the lathe change wheels, the expensive way is to use a full dividing head. Al Longworth offers a neat device which is more accurate than changewheels but avoids the expense of a full dividing head. Although some experience will be needed to make it, it is not that difficult. It can be constructed from stock materials. It should be noted that large numbers of divsions may lead to slight cumulative errors."
As usual there are two PDFs of the whole plan, then the individual pages for printing on A4 and sticking together. Note that to use the device you also need to make the simple 'transfer caliper' in a separate file (see below).
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The set of materials and fixings is no longer available from Model Engineering Services, who currently only supply for the Quorn and Kennet grinders.
Dividing Device Free Plan Sheet 1 as a PDF
Dividing Device Free Plan Sheet 2 as a PDF
Or download the plan as eight A4 pages to print and stick together:
Dividing Device Free Plan page 1
Dividing Device Free Plan page 2
Dividing Device Free Plan page 3
Dividing Device Free Plan page 4
Dividing Device Free Plan page 5
Dividing Device Free Plan page 6
Dividing Device Free Plan page 7
Dividing Device Free Plan page 8
And don't forget the transfer caliper detailed in the image below. Right click and choose 'view image' to see a larger version, or choose 'save image as' to make a copy:
Thanks once again to Nick Farr for scanning these plans.
Neil
