Flange Tool Help!! (Classic Mini content inside)

Hello,  I just bought myself a flange/punch tool from Eastwood.  https://www.eastwood.com/rockwood-air-punch-and-flange-tool.html?SRCCODE=PLA00010&gclid=Cj0KCQiA5dPuBRCrARIsAJL7oejTBnPK1EL1rSvsX4st0mTXhY8OFvz-hVMVzN08PpKlaPBIXuPWcm8aAvVKEALw_wcB   Looks like a fantastic tool to help me replace the bottom of the door panels on my classic mini build.  I unboxed it and marveled at the ease in which it punched holes and flanged sheetmetal.   But then i noticed the things I flanged (random metal around the shop)  was stretched along the flange,  so what I was hoping would be a nice strong strait bend was now deformed and wobbly.   Any tricks or tips?  Or did I just buy into a fad?  

Thanks

Dave 

Try turning the air pressure down so that the tool does not have the power to thin the flanged metal. Or figure how to lessen the "crush" by limiting the travel, or file the face of the anvil.

I dont have this issue with mine. More a function of me keeping the tool aligned between moving along the edge.

Pete

In reply to NOHOME :

Thanks Pete!  Will try tonight.