This is a template to ease the use of the Advantageous Creations Ornament Jig
Simply load the template, and use the smaller blue rectangles (1.5") to align your file.  (do not forget to de-select output (ignore) before you start your file or you will have my template engraved on your project.  89.4mm center to center when more than one jig is combined together. 
The Jig itself is 3d printed. The free file is available on Makerworld or the already printed Jig from Advantageouscreations. c o m