Hey Drack, jJust wanted to drop in to thank you again for these videos. The tips have proven to be very useful for making clean foam work at a good pace!
The whole glue gun nozzle trick is perhaps the best in getting nice clean results, but freehanding the 45-degree angled seams with two passes is also something that's proven to be actually better than the X-acto foam board cutter. Now that I finally have some free time to spend at the workshop I'm starting to pick up speed at last