Lee, I can say that was a challenge. I had to buy a commercial impulse sealer and test various materials. Ultimately found the right one but the reject ratio was very high. The screwdriver and accessories were also near impossible to find, in the end the awls needed to be machined and plated locally. So yes definitely the small screwdriver kit was more of a personal challenge and produced at a loss.
Once finished I was surprised to count 17 different suppliers and subs from 6 countries to re-produce the tool rolls. I was privileged to have an original although beat-up roll to start with.