How to judge the quality of press brake ? yes,you can not see anything before using it.maybe you will feel everything is ok from the surface.but each press brake is different.there are lots of factors to check this.we only would like to share the simplest way to you.that is to measure to the bending angle. we attached a picture and teach you how to do this.as long as you do this,you would have a simple impression for the machine quality.