Sunflower Pen Cup — Petal Crown + Gothic Quatrefoil Body

Tall sunflower-themed pen / marker / brush cup. Two design notes

make it more than a plain cylinder:

• Petal crown at the rim — 18 stretched-ellipsoid petals splay

•   outward from the top of the wall. From the side the silhouette

•   reads as a sunflower head; from above as a sun. Petals merge at

•   their bases (no gappy gear-tooth look) and lean outward so the

•   inside of the cup stays straight-walled.

• - Gothic quatrefoil grid engraved 0.8 mm deep into the body —

•   14 columns × 4 rows of cathedral-rose four-lobed motifs in a

•   brick-staggered pattern. Catches accent paint or a wash nicely if

•   you want to highlight the pattern.

Dimensions:

• 90 mm outer diameter, 100 mm tall.

• - 2.6 mm wall, 3.0 mm floor — heavy enough not to tip when full of

•   pens.

• - Petal tips extend ~9 mm above the rim — total height with crown

•   ~109 mm.

Print profile (Bambu Lab P2S, PLA, 0.4 mm nozzle, 0.2 mm layer):

• Flat bottom on the bed, NO supports.

• - Petals' lower hemispheres are ~30° overhangs (designed this way on

•   purpose) — print cleanly without supports on any modern FDM.

• - 3 perimeters, 15 % gyroid infill, no brim.

• - ~6-7 h, ~85 g PLA depending on slicer settings.

**Source .scadincluded** — every dimension is a top-of-file

parameter:

• outer_r, height, wall_t, floor_t— envelope.

• - petal_n, petal_W_tangent, petal_Z_vertical,

•   petal_tip_x_out— crown shape (fewer/wider petals, taller, more

•   splay).

• - qf_rows, qf_cols, qf_lobe_r, qf_engrave_d— quatrefoil

•   density and depth.

Render variants from the bundled source with:

    openscad -o sunflower_pen_cup.stl sunflower_pen_cup.scad

Single-colour print as shipped. For a two-tone look (gold petals on

a darker body) you can split the crown out by editing the .scad —

the crown()and body_with_quatrefoils()modules are already

separate, just emit each to its own STL and assemble in Bambu

Studio.