Brief Description: Experimenting with Flanging Holes
I cut a 4 inch hol in flat .025 sheet to see how badly the part would warp using the Noah 360. I then tried to flaten the part using a Bob Stick to over bend the part (and stretch the flange) then bending it back to the proper angle. While this may be possible, it takes too long, and does not result in a pristine part that I would like to have.
I think I will have to resort to making a set of dies for each hole size I will need. This is another one of those imbeded projects that makes scratch buiilding so slow. I searched on line for a company that makes dies, and found two. Summit racing makes all sizes, but they cost $100 to $400 for each hole size. Sonex makes a 3 inch and a 4 inch for $25 each. This is a good price, but I need way more hole sizes than that.....so I will need to figure out a way to make some. I will most likely make them from wood, since they only need to survive forming .025 aluminum, and not steel.
Flange formed on scrap test hole using Noah 360 tool
