Fusion 360 - inner structure for 3d printing

please support my channel and download the Piranha here:
3dlabprint.com/shop/piranha/
download the files for this tutorial here:
drive.google.com/open?id=10IC...

[@piconano]

Finally. I searched and searched to find this techniques. Exactly what I wanted. Well done.

[@DaveGrennan]

Thank you so much for this first class video. Much simpler than the ridiculous way I was doing this. Subscribed!

[@Augusto5610]

This is a great inspiration video for building wings and fuselarge. Many thanks as it solves all my doubts for the 3D LAB PRINTING STL FILES.

[@SpinStar1956]

Really both enjoyed your videos and appreciate the F360 lessons! Was a bit disappointed that you seemed to have abandoned the channel. I have noticed several of you designers that made a few really good videos but then quit. Anyway, hope you'll get back into it and show us some more great things in F360...

[@tsilfidis1996]

Awesome! i hope you'll make more videos like this one!

[@Mal_K2]

Great tutorial .. However I would suggest using the ‘intersect’ operation instead of the combine cut operation to avoid cutting each rib one by one. It will make all 5 ribs at once as intersect only keeps the sections that intersect each other. Also in the newer version of fusion, you can use thin extrude and define the thickness of each 45degrees square , this way you only need to create one line instead of creating a rectangle

[@3dcadfreak611]

Thank you for your comment and I fully agree with you. I optimized the way of making the ribs since this video has been created. I just have to make a new video now. I wanted to do this for quite some time ;-)

[@guytrimble8171]

Thank you for showing this. I purchased your aircraft files from 3dlabprint, gang. I have printed many airplanes and looking forwards to printing yours, the parana.

[@3dcadfreak611]

this means a lot to me. Thank you! Please let me know how the print of your Piranha is coming along.

[@taha112498]

Why didnt you use the combine feauture instead of splitting all the parts manually?

[@heartsky]

Exactly what I needed, big help, thank you!

[@BassBloke748]

Brilliant tutorial. This has completely solved the mystery of internal structures for me. Also, how to get around the need for Surface Mode slicing to patch external wall gaps. Thanks very much.

[@TheRattleSnake3145]

Instead of splitting the bodies separately, wouldn't it be quicker to make a single sketch from the side of the 45deg rib cuts then extrude everything except the ribs in one go?

[@gmodesike]

Great share. Please make more. 🧡

[@AyhanErkin]

Awesome, crazy... You are a prophet.

[@Quefelsees]

Great video! I wonder: this would not be printable in vase mode, would it? Because the printer still has to retract right? It's just so that the outer skin is even. But it would be difficult to print with light weight PLA since the retraction would lead to stringing or am I wrong here?

[@dimitriosioannidis6392]

awesome video, explains so much! What about showing how to insert all the electronics mounts like servos, landing gears motors etc?

[@alanartt3138]

Great series on Fusion - I am a beginner at sculpting and the videos have been very helpful. If you are thinking about doing more then perhaps one that shows how to split the model into rpintable sections and add joining tabs etc. and also how to add stuff like a battery bay and other internal would be great ;)

[@3dcadfreak611]

Thanks Alan, I will cover all these topics in the near future.

[@5minEpoxy]

Very nice Wolfgang.. i was wondering about the decrease to width of 0.1mm of the sketches.the final ribs cant be printed with a 0,4mm nozzle.why doesnt it remain to 1mm or 0.8mm width.to print the ribs properly?? TKS

[@windcraftaviation4069]

I think you could have used the combine body tools intersect the option to create the ribs?? Am I wrong?

[@ceptimus]

This technique works great for printing the fuselage wall with supporting ribs. But how do you then add extra internal structure for things like servo mounts, battery support and so on? You can create the shapes as holes inside the solid body (same as the ribs) but then they're only printed with a single layer perimeter. For example, how could you design/slice/print the same-shaped thing, but with an added internal servo-mount plate that is, let's say, 2 mm thick?

[@TORDesign]

This is great help thanks. What about wings - triling edges - the offset gives trouble with intersecting surfaces.

[@mickmolloy5964]

yes i had this issue too

[@domenicocusimano4476]

Hi, congratulations for the realization. In the end, the test piece is full to me so I suppose you have to print it in surface mode under treatment ?..... Thanks

[@yeteboi2259]

awesome

[@milosmrdovic7233]

Thanks for the very useful info. Still, I'm facing significant issues trying to apply these principles to my design: the main problem is that Fusion360 cannot apply the offset tool with a negative thickness on an airfoil section. The reason for this is because an airfoil forms a very sharp angle at the trailing edge which causes the resulting surface to self-intersect (your example model does not have any sharp edges so the tool works fine). Is there any way around this problem? Thanks in advance!

[@ericevans6080]

Does the .65 offset need to be increased if you are using a larger nozzle? Like a .6mm nozzle.

[@nknk314]

I really liked the manual creation of the in-fill for 3d printing. Wouldn't it be quicker to use the intersect boolean operation instead of multi split body operations? Am I missing something?

[@vitprokop2353]

I came with the same question during the watching. because few days ago I successfully used Boolean tool to generate ribs for balsa laser cuting.

[@quadroholics_fpvfpvsquad3092]

Hallo! Erstmals vielen Dank für dein Video! Versuche selbst schon seit Längerem mit Fusion 360 brauchbare Flugmodelle zu erstellen. Mit dem von dir empfohlenen Versatz von 0.65mm bekomme ich leider sowohl in S3D, als auch im PrusaSlicer separate Körper die sich nicht berühren - auch ein Testdruck zeigt, dass die Rippen die AUssenhaut gar nicht berühren. Nach ein paar Tests habe ich mich an einen Wert von 0.54mm Versatz herangetastet, aber im Druck noch nicht getestet - hast du vl. einen Tipp für mich woran das liegen könnte? LG

[@RosarioTCAF]

Quello che non capisco e se dopo la fusoliera resta un solio oppure no. Qualora resta un solido procedi per "tagli" per creare nuove sezioni ? Complimenti

Thank you for this very useful learning video. It works quite perfect and it was exactly what I was searching for. But as soon as you have more complex or especially concave surfaces, fusion is not able to handle the "create-offset" functionality anymore. Do you have an idea how to deal with that issue or a work around?

[@3dcadfreak611]

When Fusion 360, or any other CAD program, is not able to make the offset from a surface it is most likely related to the smallest radius of that surface. Imagine a tube surface with a diameter of 10mm. You will be able to offset this surface outside by any value, but inside the max. value will be 9.999999mm. Some CAD programs will present a solution again from 10.000001mm upwards, which is just internally calculated by 10 - 10.000001 and therefore the same result as 9.9999999mm offset, etc. You can check if this is the case by simply using a very, very small value for the offset. If this works, you know the minimum radius of your surface is between the value you tested and the one you want. When I have this problem I start by splitting the surface into two pieces and offset one half at a time. Usually this works good to find out where the problem is exactly. As soon as you have a good idea which area of the surface causes the problem, try modifying it to a bigger radius. I had exactly this problem on the leading edge of the vertical stabilizer of the Piranha (mentioned at the beginning of this video). I edited the main surface in sculpting mode in small steps (bigger radius on the leading edge) until the offset I needed was possible. Unfortunately there is no simple recipe like "in case offset doesn't work, do this". But this is definately not a Fusion 360 related problem. The reason is mathematics and all CAD systems have the same issue (but they all handle it differently).

[@tublarge]

I run into the same kind of problem. My goal is to print wing tips (to my vac-bagged slope gliders(rc)). Could you make a video of how to make a printable hollow wing tip where the wing profile gets narrowed down to zero creating a smooth edge. Your videos are the best by far creating rc models Thx!

[@alexantonov4129]

This trick witn the timeline reminds me: "There was a narrowly circulated proverb to the effect that only one Auror in thirty was qualified to investigate cases involving Time-Turners; and that of those few, the half who weren’t already insane, soon would be." (c)hpmor

[@JoeSmith-zv4ic]

Is it possible to do this in Blender?

[@roccocafa7872]

Hi, congratulations for the incredible realization. if it were possible I would have to ask you a question: how much do you measure the perimeter of the walls and what nozzle did you use? thanks a lot

[@3dcadfreak611]

I am printing everything with a 0.4 mm nozzle. The perimeter of the walls is set in Simplify3D to 0.42 mm. This has been set by 3dlabprint from where I downloaded a profile for my first 3d printed plane, which was the small Spitfire, and I never changed this setting.

[@roccocafa7872]

@@3dcadfreak611 thank you so much for answering me, I am waiting for other good videos;)

[@roccocafa7872]

Hi, with your video I was able to play a fuselage, now simplify 3d works very well and does not ruin the print. THANK YOU. Would you please make a video with the same approach on a wing ??? I would be very grateful to you

[@3dcadfreak611]

@@roccocafa7872 Hello Rocco, thank you for your feedback. I am happy it works for you on the fuselage. I have not made any videos for quite some time, but I improved the process in the meantime quite a bit. I really should do more videos ;). For the wing I do almost the exact same process. The only difference is, that I don't hollow out the ribs. with another offset of the outer surface. Instead, I extrude many circles on each rib individually. It's a slow process but worth it in the end.

[@roccocafa7872]

it would be great if I made a dedicated video to draw the wing with the ribs pleaaaaaaseeeeeeeee :)

[@lukeroman6232]

Please let me know if my understanding is correct: Your finished product is a solid body with hollow cutouts where the ribs will be... does the slicer have a way of inverting this solid body and only printing the ribs and thin walled shell? I am currently using Cura and haven't played around with much of the extra settings and I have not found a good way to do this. Any help would be greatly appreciated, thanks!

[@3dcadfreak611]

Yes, this is absolutely correct. Simply tell your slicer (works with Slic3er, Simplify3D, Cura and many others) that you do not want any layers on the top and bottom. Set the parameter "Wall line count" to 1 and you will get a hollow wing with solid ribs on the inside, although the CAD model is the other way around. Crazy, isn't it? ;-)

[@lukeroman6232]

@@3dcadfreak611 Great thank you very much!

[@tublarge]

Good question - great answer. Thx!!!

[@_NFE]

Running into a problem using this approach on a wing. My airfoil is very thin & when I create the inner offset by -.65mm for the rib structure - the resulting surface crosses itself near the trailing edge of the wing. As a result I can not patch the rib surface at the wing root - operation fails because the surface is crossing itself. Any advice?

[@3dcadfreak611]

sharp edges like the trailing edge of a wing can be a problem and I found that the wing is usually more work than the fuselage. But it's not impossible to use this method even when the offset geometry is overlapping. The first thing I would try is to make a copy of the original surface and modify it to make the offset surface work. In the case of the trailing edge I would cut the sharp edge with a vertical surface at a point where the vertical surface has a minimum height of .7mm. As a result the offset will not overlap and the original wing surface is untouched. I hope this makes sense, if it doesn't I finally have a reason to make another video ;-)

[@_NFE]

@@3dcadfreak611 thanks! That's an excellent suggestion. Thin airfoils seem to present interesting challenges. I'm lofting an AG12->AG13->AG14 for a 1m DLG glider with an approx 130mm chord. I also noticed the trailing edge of the wing is thinner than the nozzle can even print. I am not sure if I want to just totally discard the thin trailing edge of the wing and re-scale the airfoil profiles longer before the loft.... or alternatively i tried the following: i created an offset in each airfoil profile by .65mm outwards, and then I was able to loft two useable bodies. I just don't know which is better aerodynamically thickening the airfoil profile by .65mm or chopping off its thin trailing edge. Finally I am curious about the .65mm rule of thumb for offset - when I examine the toolpath in cura - as the nozzle prints the outer skin - it slows down and reduces extrusion when passing each rib. It looks as if .65mm was not enough and the ribs are invading into the skin area. Could this be possible? I am fairly certain I have all the 3d lab print preferred slicer settings selected. I guess all this is to say- I would certainly love to see another tutorial where you address some of the challenges unique to wings. Thanks again for all your work here - I consider your video the holy grail of tutorials for successful printing of planes.

[@5minEpoxy]

Hi, ich nochmal der Piranha Drucker. Was mich eigentlich interessiert...eigentlich was allgemeines. Wenn Du die Enden vernähst..stitching...wird dann aus dem Freiformkörper automatisch ein Volumenkörper bzw Solidkörper.?? Sonst ist das eigentlich nicht mit druckbar, oder ?? Bernd

[@3dcadfreak611]

hab dich am Namen sofort wieder erkannt ;-). Ja, genau so funktioniert das, zumindest in Fusion 360. Das heisst allerdings auch, dass Fusion kein geschlossenes Flächenmodell erlaubt. Sobald keine Lücke mehr exisitiert, wird automatisch ein Volumenkörper angenommen. Das ist in anderen CAD Systemen nicht so und macht auch keinen Sinn. Will man mit einem geschlossenen Flächenmodell arbeiten, lässt man irgendwo eine möglichst planare Fläche weg und sobald man fertig ist schliesst man die wieder. 3D drucken ist kein Problem mit offenen Flächenmodellen, nur der Export als STL klappt nicht in allen Programmen.