3/16 bend radius?

The good news is that I now have access to *two* brand-new CNC-controlled bending brakes, and have the training to use them.

The bad news is that the smallest bend radius in the tooling set is 3/16" (4.8 mm).

Since I am building from plans, can I substitute this bend radius? Are there any parts in the Cruzer that will suffer from fit and/or performance?

Thanks all.

Views: 267

▶ Reply to This

Replies to This Discussion

Permalink Reply by Earnest Fontenot on November 20, 2019 at 4:00pm

Brian,

Look at FAA publication AC 43.13-1B, page 4-14.
The table gives bend radii for different alloys in terms of sheet thickness.

Earnie

Permalink Reply by Damon Brantley on November 22, 2019 at 11:23am

If you find you can not substitute the bend radius, you may be able to use 3D printed dies. It is not common yet, but from articles I have seen it appears to work for short runs.

Permalink Reply by Russell Johnson on November 22, 2019 at 11:59am

something you might try, using a piece of light alum angle extrusion, use a router to get the radius you want, tape it to the 3/16" die using double sided tape. It would be best to polish the face of the angle after routing and coat the bending surface with a lubricant to keep the bending die and the alum sheet from galling.

RSS

New from Zenith:

Zenith Planes For Sale 
  

Classified listing for buying or selling your Zenith building or flying related stuff...

Custom Instrument Panels
for your Zenith:

Custom instrument panels are now available directly from Zenith Aircraft Company exclusively for Zenith builders and owners. Pre-cut panel, Dynon and Garmin avionics, and more.

Zenith Homecoming Tee:

Zenair Floats

Flying On Your Own Wings:
 A Complete Guide to Understanding Light Airplane Design, by Chris Heintz

Builder & Pilot Supplies:

Aircraft Insurance:

 
 

West Coast USA:

 
Pro Builder Assistance:

 

Transition training:

Lavion Aero

K&S Aviation Services

Aircraft Spruce & Specialty for all your building and pilot supplies!

How to videos from HomebuiltHELP.com

Developed specifically for Zenith builders (by a builder) these videos on DVD are a great help in building your own kit plane by providing practical hands-on construction information. Visit HomebuiltHelp.com for the latest DVD titles.

© 2024   Created by Zenith.Aero.   Powered by

Badges  |  Report an Issue  |  Terms of Service