Not really any trains but I grew up around metal working. If you get into this big time, price a small metal break(bender), and a real punch will take all the abuse you can give it. Fast, no drilling, circles, squares, etc.. Here is the smallest they make, mine(xx) is 45-50 years old, with a bench mount adaptor Roper-Whitney
(I am just as likely to use a screwdriver on the thinner stuff
)
