From: muratlanne@gmail.com   
      
   "Richard Smith"  wrote in message news:m1msh2szmg.fsf@void.com...   
      
   Funnily enough, was helping the boss on the press-brake today.  Ran out   
   of folded plate pressings and no other work, so did a run.  The boss had   
   me involved in his (our) measurements - getting the pressings from   
   "nearly" to matches drawing dimensions and angles.   
   Got some idea of the adjustable variables and what error can manifest as   
   on pressings.   
   --------------------------------   
      
   I have the 30" central Machinery 3-in-1 shear + brake + roll. Like the 4x6   
   bandsaw they can be terrible unless reworked. Mine had been orphaned in   
   disgust by a shop that tried to shear plastic with it, without fine-tuning   
   (overhauling) it first. After adjusting it repeatedly until it stopped   
   shifting it has worked fairly well, as long as I stay below its claimed   
   capacity. 0.050" 5052 aluminum is fine on it, 0.063" 6061 is almost too   
   much.   
      
   It bends a radius by inverting the fingers and pressing a round rod down   
   with the square back edges. I set its height to accept cardboard padding on   
   the lower die to avoid scratching the stock. The supplied squaring guide   
   makes a good clamp for a ruler.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)