Jig for an aircraft wing - Router Forums
 1Likes
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 24 (permalink) Old 01-17-2016, 12:16 AM Thread Starter
Registered User
 
CEOoftheSOFA's Avatar
 
Join Date: Jan 2016
Country: United States
First Name: Abraham
Posts: 37
 
Default Jig for an aircraft wing

Hi everyone... I need to create a jig to route off the area encircled in red. It is imperative that i do not touch the green area (wing rib) and the yellow area (wing spar). This is all new to me but I think my shop is equipped well enough to do the job.

CEOoftheSOFA is offline  
Sponsored Links
Advertisement
 
post #2 of 24 (permalink) Old 01-17-2016, 02:24 AM Thread Starter
Registered User
 
CEOoftheSOFA's Avatar
 
Join Date: Jan 2016
Country: United States
First Name: Abraham
Posts: 37
 
Default

Here is one that was suggested to me.
Attached Thumbnails
Click image for larger version

Name:	Screenshot_2016-01-04-08-08-17_1452712442104.png
Views:	202
Size:	229.9 KB
ID:	181737  

CEOoftheSOFA is offline  
post #3 of 24 (permalink) Old 01-17-2016, 03:15 AM
Registered User
 
furboo's Avatar
 
Join Date: Oct 2015
Country: United States
First Name: Rob
Posts: 544
 
Default

Hi Abraham, does the bottom of the cut on the spar have to follow exactly the shape of the rib (such as if you're putting on a skin of a specific thickness)? Or can it be flat?

Assuming flat is OK, the jig you show looks fine, except that I'd put in adjustable guides (or stops) on the ends so that you don't cut into the ribs. You don't really need accurate spanwise guides (the dark wood in your jig), because you're removing the full width of the spar.

You may have mentioned this in another thread, but what airplane are you building?

Last edited by furboo; 01-17-2016 at 03:17 AM.
furboo is offline  
Sponsored Links
Advertisement
 
post #4 of 24 (permalink) Old 01-17-2016, 06:04 AM
Registered User
 
neville9999's Avatar
 
Join Date: Jan 2012
Country: Australia
First Name: Neville
Posts: 1,827
 
Send a message via Yahoo to neville9999
Default

Quote:
Originally Posted by CEOoftheSOFA View Post
Here is one that was suggested to me.
Its not clear to me how much of the red area has to be routered out but this suggested jig is about what I would make, you need flat areas on each side of the cut for the router to rest on and the gap should be made to suit what ever pilot guide will be used, this type of jig would work you just have to make the sides of the gap to suit the cut, the depth of the cut gets set by the depth of the cutter. N
neville9999 is offline  
post #5 of 24 (permalink) Old 01-17-2016, 07:28 AM
Forum Contributor
 
DesertRatTom's Avatar
 
Join Date: Jul 2012
Country: United States
First Name: Tom
Posts: 15,598
 
Default

The jig looks OK, but only if the top of the spar is to be flat. If it is to be at an angle to match the shape of the green cross piece then you might need to set up the jig so it is at the angle you want. I would also suggest using a Japanese pull saw to cut the ends of the red area so the router doesn't have to travel all the way to the green. Even if the router eliminates most of the waste, you will still need to trim the small trianvles it will leave at the end. Perhaps another option would be to tape then clamp a half inch thick sacrificial piece on each side of the spar, then make the guide fit that. Route the spar and the sacrificial piece both, then your bit will make a cleaner cut and won't tear out and you won't have the remains. I assume you'll use a relatively short mortising bit with the guide bearing on the shaft end of the bit. I'd be very careful about the depth of cut and would sneak up on it gradually. Those FAA inspectors can be nit picky.
DesertRatTom is offline  
post #6 of 24 (permalink) Old 01-17-2016, 08:49 AM
Registered User
 
Garyk's Avatar
 
Join Date: Dec 2011
Country: United States
First Name: Gary
Posts: 811
 
Default

Careful, aircraft wood is $$$$$$$. The jig looks ok but I would use a chisel and wood rasp on the ends of the cut to insure I did not touch the metal ribs. What aircraft are you working on. I had to replace the wing spar on an Aeronca Champ rebuild. Started out with the metal framework and replaced everything else with new material. Fun project.
Garyk is offline  
post #7 of 24 (permalink) Old 01-17-2016, 09:03 AM
Forum Contributor
 
Stick486's Avatar
 
Join Date: Jan 2013
Country: United States
First Name: Stick
Posts: 24,602
 
Default

thanks for the way better pic...

I believe Phil hit it w/ this one...


This would have been the week that I'd have finished chewing thru the restraints...
If only new layers hadn't been added....

Stick....
Forget the primal scream, just ROAR!!!
"SNORK Mountain Congressional Library and Taxidermy”
Stick486 is online now  
post #8 of 24 (permalink) Old 01-17-2016, 10:01 AM Thread Starter
Registered User
 
CEOoftheSOFA's Avatar
 
Join Date: Jan 2016
Country: United States
First Name: Abraham
Posts: 37
 
Default

Quote:
Originally Posted by furboo View Post
Hi Abraham, does the bottom of the cut on the spar have to follow exactly the shape of the rib (such as if you're putting on a skin of a specific thickness)? I don't really understand the question because the rib is where the routing stops. The cut will follow the spar and stop at the rib(s) Or can it be flat?

Assuming flat is OK, the jig you show looks fine, except that I'd put in adjustable guides (or stops) on the ends so that you don't cut into the ribs. You don't really need accurate spanwise guides (the dark wood in your jig), because you're removing the full width of the spar. Any suggestion how I can add these guides

You may have mentioned this in another thread, but what airplane are you building?
Building a Steen Skybolt
CEOoftheSOFA is offline  
post #9 of 24 (permalink) Old 01-17-2016, 10:05 AM Thread Starter
Registered User
 
CEOoftheSOFA's Avatar
 
Join Date: Jan 2016
Country: United States
First Name: Abraham
Posts: 37
 
Default

Quote:
Originally Posted by Garyk View Post
Careful, aircraft wood is $$$$$$$. The jig looks ok but I would use a chisel and wood rasp on the ends of the cut to insure I did not touch the metal ribs. What aircraft are you working on. I had to replace the wing spar on an Aeronca Champ rebuild. Started out with the metal framework and replaced everything else with new material. Fun project.
Forgot the money aspect do you know how much work would be involved if I damaged the spar
CEOoftheSOFA is offline  
post #10 of 24 (permalink) Old 01-17-2016, 10:10 AM
Forum Contributor
 
Stick486's Avatar
 
Join Date: Jan 2013
Country: United States
First Name: Stick
Posts: 24,602
 
Default

Quote:
Originally Posted by CEOoftheSOFA View Post
how much of your airplane was a ''kit''...

This would have been the week that I'd have finished chewing thru the restraints...
If only new layers hadn't been added....

Stick....
Forget the primal scream, just ROAR!!!
"SNORK Mountain Congressional Library and Taxidermy”
Stick486 is online now  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Router Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Mini Fence by Krymi Corp CharleyL Tools and Woodworking 37 07-23-2018 06:58 PM
Porter Cable 55160 Omnijig Review Echonav Tool Reviews 19 06-21-2015 02:59 AM
New circle jig Ghidrah Jigs and Fixtures 10 03-04-2015 05:22 AM
My First Jig Coleve Show N' Tell 14 03-10-2013 08:12 PM
Jig Fabrication Tony1012 Jigs and Fixtures 2 03-31-2011 08:21 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome