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Folded lamp shade v2

One more lamp shade, this time a little more intricate and with rounded corners for easier printing. Printed in a semi-transparent silver.

Instructions

See http://www.thingiverse.com/thing:110736

Edit: Added a v2 model with a straight profile at the bottom, which works better with Slic3r's spiral vase mode.


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Stiffened Polygons

Polygons with 3d-printed strands as mechanical reinforcements.

To introduce stiffness to a polygonal frame multiple triangles are inscribed into the shape, changing rotation with z-height. The triangles themselves are strands of filament extruded into the air. This technique is called bridging, because it doesn't make use of support structures (eventually the different triangles may touch each other). Each strand consist of two layers.

The diameter of all three polygons - pentagon, hexagon and heptagon - is approximately 10cm. The rotation of the triangle is bound to 1/3 of the length of the polygon outline, not to an angle. Therefore this principle is adaptive to the applied shape and every curve point is connected to exactly two strands. The result has a relative high stiffness compared to the amount of material used.

Geometry was created using Rhino/Grasshopper.

Print Settings

Printer:

Generic Printer

Rafts:

No

Supports:

No

Resolution:

0.2

Infill:

25%

Filament brand:

Generic PLA

Filament color:

Grey

Filament material:

PLA

Notes:

The examples were printed using the default "0.2mm Quality" from PrusaSlicer on a Prusa i3 MK3S. Extrusion width was 0.45mm, "Thin Walls" option should not be necessary.


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Voronoi vase

Download my other models here

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Decorative vase that is printed in 2 parts.

UPDATE 4:

Add pre-suported version of upper part use brim for adhesion.

UPDATE 3:

Updated to version 2 easier to print the bottom part.
Repaired 1 piece version, thanks for explaining the problem to sersch123

UPDATE 2:

Dual extrusion MMU version added.

UPDATE 1:

1 piece version added.

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UPPER PART RAFT NEEDED

In the upper part of the vase I have increased the z-hop to 0.8 so that when moving along the piece it does not break it.
If you experience problems with the part breaking due to hitting the nozzle, it may be caused by that particular filament expanding more than it should, this is very common in silky filaments.

IF THE NOZZLE HITS THE PIECE BREAKING IT, REDUCE THE EXTRUSION MULTIPLIER TO 0.95