How to get strong LW-PLA Wings

[@harrison748]

This was an extremely helpful video, I work as a composites technician and will be trying the epoxy technique at work. thankyou!

[@3d-printz]

you´re very welcome :)

[@antonioebejer]

Thank you soooooo much ! This is so useful. It would also good to know how they resist temperatures.

[@brubakerjm]

Very interesting results. Thank you for sharing this. I wonder how a PLA+ print would fare in this test. The epoxy added about 20% weight, which is starting to approach the realm of printing in a non-foaming filament. Depends of course on print settings, but it would be interesting to know a baseline “non-LW” strength number for your testing methodology.

[@AerialWaviator]

faszinierende und interessante forschung.

[@slofly]

Great stuff - Thx for sharing ! 😎

[@sebi1240]

Very interesting! You may try the brown paper covering method normaly used for foam wings.

[@danitegue]

Thanks a lot for this! Which epoxi did you use?

[@ripmax333]

Instead of using Epoxy Resin, what if you use Outdoor Varnish, you can also find them in spray Cans. and second, what if you experiment with Gyroid Infill as well?

[@richardgardner7019]

What epoxy resin is it you used.

[@nunukula]

Awesome video! Thank you so much for this, really helpfull! What epoxy did you use?

[@3d-printz]

oh it was some very generic stuff i think it was 1:50. Its important to choose some with lower viscosity or thin it a bit with isopropyl.

[@mrsanti3287]

Interesante. Gracias desde España.

[@jadentalks5068]

I need some help. I have been 3-d printing for a while and I am just starting to use lw-pla and I am not having good results. I followed color fabs Guide and for some reason the cube that is the thickest is at 210 Celsius. And according to there website is should be hotter when it’s the thickest cube and also all the hotter ones don’t look good at all. Any help would be nice. Your channel is very informative I like watching your videos.

[@boomupengineering]

If doing sanding and epoxy with LW-PLA, do I still need HT LW-PLA? I've only printed one plane with Polymaker LW-PLA. The sun must have found part of my wing while I was messing with other planes and that is all it took to warp an aileron. Plane is painted yellow. So wondering if it matters much to go with HT PLA if also coating with epoxy. I have some ColorFabb LW-PLA-HT but need to do more prints to dial in the settings. Sure is flexible.

[@3d-printz]

I only had issues with regular LW-PLA in Black, grey and green at 35°C in plain sun so far (untreated). Normally white LW-PLA is not a problem. Especially when you coat it with epoxy. The resin should save the shape, even if the material gets soft. I´m printing LW-PLA-HT commercialy in large scale and can give you Bambu-Profiles if you want. Just write me a line: [e-mail]

[@samuelnicholson9711]

How do these results compare to regular PLA

[@cain357b]

Coating with epoxy might become even stronger through just 1 coat and some ultralight glass cloth. Use a foam roller to apply and remove virtually all by layering with toilet paper, rolling with a clean roller and removing the paper

[@robtomben]

I usually squeegee my extra epoxy off with a rubber paintbrush looking thing. Then wipe off the rubber and do another pass. Gets it all off and leaves the glass nice and tight.

[@rcpowres]

Ah super!!!! Hast Du das Harz verdünnt?

[@3d-printz]

Nein, in diesem Fall nicht, aber ich habe gerade weitere Tests mit verdünntem Harz am Laufen - ein paar Tropfen IPA bis die Viskosität passt, dann klappt das.

[@pb8416]

I'm new to printing, but thinking about printing a wing. Would a Wing in two parts split and 3d printed starting on the spar improve the strength? I'm always suprized the wings I see 3d printed are printed from Wing root Station.

[@3d-printz]

there have been trials, but it brings other problems on the table. now advantage without disadvantage :D a slight angle reduces the effect of the layers as a weakpoint.

[@iooi557]

What about PP-CF? It can be more useful than LW-PLA

[@3d-printz]

..but still way more dense + hard to print

[@marc_frank]

es gibt doch auch noch LW ASA

[@3d-printz]

Ja das ist wahr, aber leider ist das Zeug nicht zu gebrauchen. 😢

[@marc_frank]

@@3d-printz warum denn nicht? soll doch 15% weniger wiegen als pla

[@3d-printz]

@@marc_frank Ja das Gewicht ist ein Traum, aber die Layerhaftung leider quasi nicht vorhanden, habe noch von niemandem gehört der damit erfolgreich ein Flugmodell gedruckt hat. :(

[@michelg3575]

And if the temperature is too hot, disaster

[@3d-printz]

of course, but actually the temperaturething is overrated extremely. YES you won´t leave your PLA-prints in the hot car. NO they won´t melt if you go flying in summer. YES black PLA melts on hot days when left in sun at temperatures above 30°C. Just print bright colors and everything is fine. Also you shouldn´t keep your Compositeplanes in the hot car. One easy rule of thumb: when the sun burns your skin it probably burns your PLA Plane as well ;)