I was planning to start to use aluminium/tin/brass sheets to do some scratchbuilding in my models (fenders, schurzens, metallic boxes, etc
), but I have 2 quick questions:
Are there any tools anyone can recommend to make clean straight cuts on the metal sheets (no more than 0.020 inch/0.030 inch thick). Can you recommend me were can I find such tolls on the web?
what are the advantages/ disadvantages of the diferent types of metal over each other for modelling purposes (aluminium Vs brass Vs Tin)?
I (nearly) always use a standard modelling knife to cut thin metal sheet: put a steel ruler along the line you want to cut, and use an old(ish) blade* to score the metal repeatedly until you either get through, or until you can flex the metal so that it breaks along the line. You can also use scissors, but these will bend the metal as they cut, which won't happen (or at least, not nearly as much) if you use a knife and a ruler.
* You could use a new blade, but it will get dull very quickly, so IMHO you might as well use one that's already dull.