Single-Perimeter Rocket Plane for Seamless Spiral Printing

by mechg, published

Single-Perimeter Rocket Plane for Seamless Spiral Printing by mechg Oct 7, 2014
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Note: If you plan to scale this up 2x or more, make sure you use RocketPlaneFor2xScaleup to avoid certain artifacts present when trying to scale the other files.

See large print of Rocket Plane shown at Midwest RepRap Festival:
(click on photo, then scroll to right for second photo)

Remixed from Single-Perimeter Rocket. The only difference in print settings between this and the Rocket design is that I printed this example with .4mm layer height instead of .5mm. Don't let the gnarly-looking polygons on the rendering of the fuselage worry you too much - the final print looks way smoother than the rendering does. Use the larger files for a smoother surface. The photos show some prints in clear T-glase and some in silver Solutech PLA.
"RocketPlaneSmallSmooth.stl" has fins and wings that are thicker so it can be scaled down to 50% and still have a good perimeter. If you want the 5.5" long version, use RocketPlaneSmooth.stl. If you want the 2.75" long version, use RocketPlaneSmallSmooth.stl and scale it 50% in your slicer program.
At .5mm layer height, T-Glase will look really glassy. At .2mm layer height, it will be more translucent and satin looking.
Update: Added photo of the smaller plane printed in silver Solutech PLA.
Use RocketPlaneFor2xScaleup if you plan to scale the plane by 2x. Tesselation is set to finest for ultra-smooth contours, but this results in a huge file.
One of the photos shows the plane scaled down to 50% mounted onto 40% scaled stand printed from ichdruck3D's stand here: http://www.thingiverse.com/thing:198954

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Hey mechg,
This is really cool, thanks for sharing!
I have only one hesitation: the section behind the main wing is not symmetrical (RocketPlaneFor2xScaleup.stl). I'm not sure if you realized it, but I thought I'd let you know anyway.
Thanks again!

if I wanted to print this at 40cm height, which model should I download and scale up ?

Use the RocketPlaneFor2xScaleup.stl
The fins and wings will be hollow, so use a sturdy .6mm or greater extrusion width for external perimeters.
Don't forget to rotate the object so the nose is pointed up (z) before slicing.

I had some problems with the front wing printing with petg, the underside must have been too steep an angle for petg to form smoothly.

What is your temp and fan speed at that point?

Apr 1, 2016 - Modified Apr 1, 2016

very good model ! maybe you can assist me . i don't know why the lower part of the wing gets all messed up . I'm printing with Flashforge creator pro using Atom's translucent Pla in 200 deg at 0.1mm with a 0.4mm noz

I just experienced something similar in PLA. It was fixed by raising the print temperature. If you are still having this problem, try 205, then 210, and see if it helps

I haven't seen that kind of issue before. The scale at which you printed it looks unusual. Your slicing program could be doing something strange at that scale, since the wing consists of two passes of a single wall, right next to each other. Take a close look at the slicer rendering at that spot. Or try printing at the scales I suggest in the instructions and see what happens.

Where is the stand ?

Feb 24, 2016 - Modified Feb 24, 2016
mechg - in reply to MontagueFlange

See "Summary" under Thing Details.

If FreeCAD has updated since this upload, is there any chance you can try a re-export? I'm finding a very thin sliver in the center of the engines that's throwing off my slicer when I scale it up by 2x or more. A model integrity check also showed me a warning that there are intersecting triangles.

I hope a reexport would make it easier to spiralize the build.

Thank you. It's a beautiful model.

Dec 30, 2015 - Modified Dec 30, 2015
mechg - in reply to JRD

Ok, try the file RocketPlaneSmoothFor2xScaleup.stl. It is large, so downloading and slicing may take a while. It must be scaled up for slicing, otherwise the wings are too thin to slice properly. FreeCad .16 seems to have a much finer tesselation default, so this model saved as stl is 7MB compared to the previous 1MB.

Thank you. The larger file is definitely nicer and worth the size increase.

Dec 31, 2015 - Modified Dec 31, 2015
mechg - in reply to JRD

Oops, I accidentally used the Candy Container version of the rocket plane, with the large tail and bayonet bumps. I went back and fixed that, using the original plane, which the uploaded file now reflects. The candy container plane is already made for scaling up by 1.5x, and is already high-res for smooth contours.

Dec 30, 2015 - Modified Dec 30, 2015
mechg - in reply to JRD

I will do this later today. I did update my copy of FreeCad a couple of weeks ago, so hopefully it will make a difference.

We printed it yesterday (small model) with the spiral mode on a printrbot simple 1405 using transparent PLA. The result is identical to your photo. Very very nice. Thank you for sharing.

jyeh_tw: It is clear Taulman T-Glase, which is PETT. For more info, click on the "Remixed From" icon on the right. Look at those instructions for printer settings. Spiral Vase mode gets the cleanest results.


May I to know you use what material to print? can get the clean result?

Very nice and clean model. Can't wait to make it!