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Author Topic: Jig-its wing building jigs  (Read 764 times)
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Sundance12
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MAAC #25680, VE4BDF (amateur radio callsign)

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« on: January 28, 2019, 06:46:01 PM »

I am trialling a set of wing jigs that I call Jigits or Jig-its as a system to build any kind of wing on any kind of surface. These are trial pieces and some minor changes to the design of ech jigit is still in the works. Jigits are made from Maple and are really durable. They are solid and do the job well. I will see how this wing build goes and report. Wings built this way come out straight no matter what the surface is that wings are built on.


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Jig-its wing building jigs
Jig-its wing building jigs
Jig-its wing building jigs
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fred
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« Reply #1 on: February 06, 2019, 12:21:12 PM »

interesting gizmo... does look erm.. tricky to setup/align.

Oddly your last pix shows ribs with alignment holes.
Why not simply insert steel rods thru those holes for an instant wing jig ?
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Sundance12
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MAAC #25680, VE4BDF (amateur radio callsign)

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« Reply #2 on: February 06, 2019, 08:42:06 PM »

Holes in the ribs are not for any kind of rod, holes exist because they are part of the stacked  rib making method. Screw the jigs to the board, insert leading and trailing edges, level with the sight level in your app and build in ribs.
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Sundance12
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« Reply #3 on: February 07, 2019, 09:15:46 AM »

The project that I am building is being used as a test to see how I want to change the design of the Jig-Its. In the meantime, I include the method of rib building in this image that explained the need for some holes in each rib.
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Re: Jig-its wing building jigs
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Sundance12
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« Reply #4 on: February 07, 2019, 09:36:16 AM »

Here is another shot in how wings are set up in a Jig-Its system. Wings can be built on any level or not-level surface as the leading and trailing edges of wings are leveled independently of a building board.
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« Reply #5 on: February 07, 2019, 10:56:14 AM »

Wings built with this system can me supported even during the sheeting procedure. Wings can be flipped in the jig and both sides can be completed. In the end a full wing can be made that is straight and ready for tips and ailerons. Completed wing shown.
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« Reply #6 on: February 07, 2019, 06:12:10 PM »

That is an interesting approach - the ease of aligning them would be the secret of success as Fred mentioned. However in this day of lase alignment guides - perhaps a special unit could be set up to align both front and back jigs. Also I imagine the screw attachments to the base board would need to be secure to withstand the units being bumped or moved during construction I imagine.
However the idea of separating the accuracy from the base board is an interesting idea.

Good luck with it SD,

John
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Sundance12
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MAAC #25680, VE4BDF (amateur radio callsign)

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« Reply #7 on: February 07, 2019, 07:21:04 PM »

I have built wings with this type of system for a number of years, the techniques are simple, wings exert little weight to the jigs. More jigs are better. In fact a wing in the jig setup is so solid that it is easy to put weights on it to hold things in place.  Washin or washout can even be incorporated into the build. This system is not new and I am not the originator of the idea. This wing is the 6th that I have made with this kind of jig support.

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« Reply #8 on: February 08, 2019, 07:35:30 AM »

it's always interesting to see different techniques SD. is that a retro pattern model wing by any chance? I have a friend finishing a UFO and he is already flying a UFO.

It's good to see you fellows building.
John
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« Reply #9 on: February 08, 2019, 11:37:56 AM »

Yes John, its a DFH 21 from model builders plan 1791, say mid 70's
Bengt Lundstrom design. I may do a build of it. Pictures to follow.
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