I thought this might be of interest to the frame builders here.
https://www.kickstarter.com/projects/4608648/bicycle-disc-brake-tab-attachment-fixtures
One fixture for both front and rear ISO disc tabs.
Top picture shows fixture alone.
Middle picture shows fixture with ISO tab in rear(frame) mode
Bottom picture shows fixture in ISO front(fork) mode
https://www.kickstarter.com/projects/4608648/bicycle-disc-brake-tab-attachment-fixtures
One fixture for both front and rear ISO disc tabs.
Top picture shows fixture alone.
Middle picture shows fixture with ISO tab in rear(frame) mode
Bottom picture shows fixture in ISO front(fork) mode