Thorp Air Command - T18.net http://t18.net/thorpforum/ |
|
How do you bend the inside flange on the bulkheads? http://t18.net/thorpforum/viewtopic.php?f=2&t=7226 |
Page 1 of 1 |
Author: | Ryan Allen [ Mon Feb 18, 2013 3:28 pm ] |
Post subject: | How do you bend the inside flange on the bulkheads? |
Anyone have a tip on how to bend the inside flange on the bulkheads without making them wavy.....especially in the corners where they are radiused? |
Author: | dan [ Mon Feb 18, 2013 9:52 pm ] |
Post subject: | Re: How do you bend the inside flange on the bulkheads? |
Shorten the inside leg slightly Ryan where the radius is so you don't have a pile of material there to try to shrink, it doesn't take a half inch flange there to make it very rigid......Dan |
Author: | James Grahn [ Tue Feb 19, 2013 4:27 pm ] |
Post subject: | Re: How do you bend the inside flange on the bulkheads? |
I think the key is what Stug suggested with two form blocks clamped tightly. You can bend the flange to 90 degrees easily. Just make sure you bend all of it at once. If you start on one side and work your way to the other, it will be wavy. Danny's suggestion of cutting out the corners helps too. I cut mine at 45 degrees. I learned a real trick at a Porterville fly in some years ago. Frank Roncelli, the master rib maker, taught me to use a lead slap as the final step to making the flange lie flat. It is a piece of lead about and inch wide, about 3/8 inch thick and about 1.5 ft long. It actually can shrink the al on the flange. Incidentally, all flanges are 3/4 inch wide. Cubes |
Author: | Ryan Allen [ Tue Feb 19, 2013 9:08 pm ] |
Post subject: | Re: How do you bend the inside flange on the bulkheads? |
those are good lookin bulkheads....I have a bunch of scrap made right now. Thanks for the tips. |
Page 1 of 1 | All times are UTC - 6 hours [ DST ] |
Powered by phpBB® Forum Software © phpBB Group https://www.phpbb.com/ |