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taciucmarius

Spitfire model plane for laser cutting or 3D printing

by taciucmarius Apr 2, 2019
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Nice work. It looks like the cockpit was modified? was this for ease of printing? Or maybe I misremember the cockpit shape.

Thank you. It is the same. I did not do any updates to this project since I uploaded it. Maybe you remember this other design of mine:
https://www.thingiverse.com/thing:3590876

Hawker Hurricane MKIIA model plane

very nice
but you say laser or print, where are the laser DXF. files?

Very good question. Thanks for asking for everybody else. I gave the link to the hackaday project page below in the comments too:
https://hackaday.io/project/164666-building-a-spitfire-model-plane-with-my-son
The project page contains a zip file called
Spitfire CAD files for converting to other formats.zip
I basically gave the entire project on a tray for free. Anyone can copy the dwg files, modify them as they like, plot the planar projections or export in any format on the market. I did not convert them myself to dxf since people have different machines and they need different formats, sizes, orientations and support bases. Maybe somebody would like to mill one out of aluminium for creating a sculpture of some sort for example.
Have fun and post pictures with the build :D

superb thanks, will post a pic when done

Somebody asked me the following question on youtube so I’m posting it and the answer here for anyone interested.
JW: Does it fly?
TM: Good question. It is a little bit heavy for flying with the rubber band propulsion, but it should definitely fly with an electric motor. It is symmetrical and the roll balance is already perfect. The current weight of this rubber band model skeleton is about 98 grams. So if somebody chooses to print all of the parts at 200% scale, they would end up having an 840mm wingspan model frame weighing about 400g. With the heatshrink film, the RX receiver, battery, ESC, 3x 9g servos and the motor it should rise up to slightly below 1Kg. If they choose a 1000kV 2026 brushless motor of about 500g of thrust with a 9047 propeller, this configuration should be more than enough to make it fly really good and perform well. If I will have some time I would definitely give it a try. If I will modify this model to fit all of the electronics inside, I will definitely post the files so anyone interested should subscribe to my channel or follow me on Thingiverse. This plastic skeleton should be more resistant to crashes than the classical balsa wood frame. And it has the advantage of being able to be welded instantly with the soldering iron and have it fixed and ready to fly in seconds. This is what I'm flying right now and I can tell you that I'm kind of getting tired of patching and gluing it: https://www.youtube.com/watch?v=Hcwf_bLUbgk

I am all most done printing it out and I noticed that the nose looks solid with no hole for the propeller shaft. Is that so or is it just the way it looks in the rendering? If the nose is solid what size hole do I drill? Also would it be possible to get the hose hollowed out because I have some old cox gas engines that I may mount on the model just to see what happens. I will post pictures and if I put the gas engine on I will try to post video of it flying.

I printed it just as it is using the spiral vase settings I posted on the Thing details page and then I made a hole using the soldering iron. So i didn't measure the exact center when I made the hole and the diameter was somewhere between 1.5 and 2 millimeters. the paper clip wire was 1mm thick. After installing the propeller, I placed a drop of sewing machine oil on the nose hole just to make the movement smoother. I guess the model could be improved. I could make a hole into the solid and then mach the number of the solid layers with the depth of the nose hole and then have the spiral vase section from that height up. But when I designed it I never thought of efficiency. I only wanted to have a proof of concept and something that can get your kids excited. I noticed that because the hole is not long enough and of proper size, the propeller spins a little bit noisy and wobbly. I know this means energy loss and that I could make it spin for a longer period of time by redesigning the nose, but like I said, it was enough for the purpose it was created for.
I am very excited by the fact that you are going to attach an engine to it. Tell us if it flies and post pictures :D

I quite like this!

Incidentally, if you're looking for good balsa models, I think companies like Guillows and Manzano Laser Works still make them.

Thanks. There are still some available on the Chinese market too. Like this one:
https://www.aliexpress.com/item/2018-New-De-Havilland-DH82a-Mini-Tiger-Moth-RC-Plane-Biplane-980mm-Wingspan-Laser-Cut-Balsa/32882847154.html?spm=a2g0s.9042311.0.0.27424c4ddCBUvg
But printing them is like ten times cheaper and way much fun.

If you want to see some more of my videos, click here:
https://www.youtube.com/user/tacitusmars

If you are a technical person and you would like to see more of my projects,
check out my hackaday page here:
https://hackaday.io/projects/hacker/69845

You can check all my other designs here:
https://www.thingiverse.com/taciucmarius/about

I had a balsa BF109 but always wanted a spitfire. The structure is so much like the old balsa ones. I love it.

Post pictures after you build it.

Congratulations from Belgium very good job. He is lucky your son to have a dad so competent in all these areas ;o) and thank you very mutch for sharing.
I have a creality under 3 and I will do this spitfire thanks to your work and especially your sharing.

So happy to hear about this. Thank you for your compliments and stay tuned for more interesting designs in the future.