There are pins, ashtrays, bookshelves etc. made of the Rammstein's logo, why not a 3D printable hair pin? 

Modeled in Fusion 360, printed "flat" in PLA with 100% infill it weighs just 16 g.

The dimensions are ~86×90×24 mm.

You will need a needle to keep it in place.

Rammstein logo hair pin

hairpin.3mf

hairpin.stl

It's an accurate (with fillets and holes) 3D model of the Elegoo Neptune 3 and 4 (Pro/Plus/Max) build plate to be used as a custom background in PrusaSlicer, SuperSlicer or Cura.

I've added an embossed Elegoo-logo for a slightly refined look.

**PrusaSlicer/SuperSlicer**

You will find the build plate settings under:

_"Printer Settings" → "General" → "Bed shape:" → "Set..."_

The build plate model indended to be used with background images provided as SVG and AI files (main grid lines are exactly 40 mm and the secondary grid lines are 20 mm apart).

**Cura**

Copy elegoo_neptune_3_pro_cura.3mf or elegoo_neptune_3_pro_cura.stl to:

_C:\Program Files\UltiMaker Cura 5.x.x\share\cura\resources\meshes_

and change the “metadata” part of elegoo_neptune_3pro.def.json here:

_C:\Program Files\UltiMaker Cura 5.x.x\share\cura\resources\definitions_

as follows:

"metadata":  {
    "author": "NARUTO",
    "visible": true,
    "platform": "elegoo_neptune_3_pro_cura.3mf",
    "platform_offset": [0, 0, 0],
    "quality_definition": "elegoo_base",
    "machine_extruder_trains":{"0": "elegoo_neptune2_extruder_0"}
},

Commas are especially important!

Custom build plates for Neptune 3 and 4 (Pro/Plus/Max) for PrusaSlicer and Cura

elegoo_neptune_3_max.3mf

elegoo_neptune_3_max.stl

elegoo_neptune_3_max_cura.3mf

elegoo_neptune_3_max_cura.stl

elegoo_neptune_3_plus.3mf

elegoo_neptune_3_plus.stl

elegoo_neptune_3_plus_cura.3mf

elegoo_neptune_3_plus_cura.stl

elegoo_neptune_3_pro.3mf

elegoo_neptune_3_pro.stl

elegoo_neptune_3_pro_cura.3mf

elegoo_neptune_3_pro_cura.stl

I slightly adjusted the height of the [cotton bud holder](https://www.printables.com/model/728054-cotton-bud-holder-roman-pillar) by [Christoph Lehner](https://www.printables.com/@ChristophLehn_474720) from 71 mm to 100 mm total height so it can be used as a pen holder.

A "damaged" version is available as well.

Pen holder roman pillar (remix)

wattestaebchenholder_bigger_2.stl

wattestaebchenholder_bigger_2_damaged.stl

A simple 20×12 cm wall shelf with additional braces for improved rigidity.

You will need 3 M3 screws and nuts for the assembly. A solid ("one piece") version is available as well.

For the best possible finish print as shown on the screenshot.

**Update:** Two new "more flow" and "less flow" versions.

Dripping wall shelf

drip_shelf_back.stl

drip_shelf_both_parts.3mf

drip_shelf_front.stl

drip_shelf_one_piece.3mf

drip_shelf_one_piece.stl

drip_shelf_front_less_flow.3mf

drip_shelf_front_less_flow.stl

drip_shelf_front_more_flow.3mf

drip_shelf_front_more_flow.stl

drip_shelf_one_piece_less_flow.3mf

drip_shelf_one_piece_less_flow.stl

drip_shelf_one_piece_more_flow.3mf

drip_shelf_one_piece_more_flow.stl

Mathematics and computer science teacher.

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