Not familiar with the tool, but definitely yes to the two part putty, also known as green stuff.
Haven't tried it to recreate zimmerit, but can describe some general qualities about the stuff:
- very tacky, so keep a small dish of water handy to keep both your fingertips and tools wet
- it has a work time of about 2 hours, fully cures 24 hrs
- it's properties are great for holding together when really thin
- not the best putty if you intend to sand it after it has dried - in this case it's suggested to mix in 50% another putty such as Apoxie Sculpt.
regards,
Jack