JMRagan said:
If you build the jig from 1/2 plywood, it may hold in place using double sided carpet tape. If that doesn't hold you can probably tack it in place with a small nail in each corner.
JMRagan said:I have a project and would like input. I need to build a template to assist putting additional vents in the soffit of my house. I plan to use a small trim router to cut a 6x15 hole about every 5 feet. How to hold the template in place while I cut upsidedown. Any input will help.