I haven't seen anyone do it but it seems reasonable. I'm a little more difficult than most so I would probably cut the upper and lower pieces in half after the initial cut to protect everything. I wouldn't be comfortable with the firearm or other pieces directly on the case. I've built a wire cutter for foam and one you've cut out the foam to go back and cut the pattern in two is not difficult.
Im always looking at getting more into those cases too. The foam is not that expensive and would be worth a try in my opinion.
Im always looking at getting more into those cases too. The foam is not that expensive and would be worth a try in my opinion.