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Posted

Man, I'm sucked into this hobby hard :willy_nilly:

 

Experimented with some foam cutting last night and made my first wing today.

 

I'm using my battery charger, some coil wire off a $2 roll at radio shack, a plank of wood and a screw as the foam cutter. I'll invest some more time in making it more permanent now that I know it does a good job with cutting large cross sections.

 

The surface texture of this wing is nearly perfect. very smooth. I does have a bit of curve to it because I wasn't holding it down enough. Here are a few pics, and my assistant.

 

http://www.astarasoftware.com/images/rcstuff/wing1.jpg

http://www.astarasoftware.com/images/rcstuff/wing2.jpg

http://www.astarasoftware.com/images/rcstuff/wing3.jpg

Posted

And I thought you had made a wing for Franken7...

 

But that one is looking good, so who needs a CNC machine?

Posted

There is a trick to cutting wings. Mark and number points on each template. Have 2 people move the wing/cutter very slowly with one person calling out the numbers so you both stay in sync. You are trying to keep the wire straight and keep it moving.

Posted

Mazda,

 

Looks cool. Do you need to seal the foam before you glass it or is the plane so light you can mylar direct onto the wing, ie. it will not need additional strengthening. Do you rout in a spar or strengthen it some other way?

As a kid I built balsa models but never worked with foam. it looks like a good way to build mouldless bodies.

 

Have fun,

 

Dermot.

 

PS. I love the Potomac workbench!! :0 :)

Posted
Mazda,

 

Looks cool. Do you need to seal the foam before you glass it or is the plane so light you can mylar direct onto the wing, ie. it will not need additional strengthening. Do you rout in a spar or strengthen it some other way?

As a kid I built balsa models but never worked with foam. it looks like a good way to build mouldless bodies.

 

Have fun,

 

Dermot.

 

PS. I love the Potomac workbench!! :0 :)

 

No seal, glassing, or mylar - just a carbon fiber spar in the wing.

 

That's not a Potomac workbench. It's a North Potomac workbench (it's wood, not slate) LOL

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