Filament Shelf — bored for an Everbilt adjustable closet rod (Ø28.75 + Ø32 mm)
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This version takes the two halves of a single Everbilt adjustable closet rod (Home Depot SKU 1005 994 152, matte black)
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A remix of Filament shelf - Filament Regal by Los_Fritzos: all credit for the original design to them. The only change is the rod sockets.
The original takes Ø20 mm dowels. This version takes the two halves of a single Everbilt adjustable closet rod(Home Depot SKU 1005 994 152, matte black, 48–72"). An adjustable closet rod is two telescoping aluminium tubes, so one ~$12 rod gives you both rods you need, and they happen to be two different diameters, which is why this remix has two different sockets:
Rod | Socket | Bore | |
|---|---|---|---|
Inner tube | Ø28.75 × 997 mm | A — near the wall, the HIGH one | Ø29.05 |
Outer tube | Ø32.00 × 986 mm | B — at the arm tip, the LOW one | Ø32.30 |
Clearance is +0.30 mm on diameter, matching the original design's own convention (its Ø20.30 bore on a Ø20 dowel).
Changed
Socket A moved +4.0 mm outboard — at Ø29 the collar would otherwise cut into the third wall slot. All five slots stay full length. Rod spacing goes 162.06 → 158.16 mm.
The bosses grew past the original outline (unavoidable — the original collars were tangent to it), so each one is blended into the web/arm with a gusset rather than left as a step. Part grows 196.6 → 202.6 mm in X; Y and Z untouched, still fits any 220 mm bed.
Collar wall stays at the original 3.80 mm.
$fn=128on the bores, which matters: a tessellated hole is a polygon inscribed in the nominal circle, so at$fn=64a Ø32.3 bore would lose 0.039 mm — 13% of the fit clearance, silently.
How much will it hold?
The near-wall rod carries ~83% of each spool's weight (the cradle is tilted), so it's the limiting one despite being the thinner tube. Everbilt rate the rod at 10 lb per linear foot ≈ 14.5 kg over this span:
8–10 spools — comfortable
12 spools — ~86% of rated, fine (that's what's in my photos)
14 spools — at the rating
16+ — over it
Calculated sag on 1 mm wall aluminium at 14 spools is 2.9 mm, and peak bending stress 30 MPa against 145+ MPa yield, so deflection isn't the limit — the rod's own rating is. No mid-span support needed; the original's middle piece exists for wooden dowels, which sag ~5× more.
The real weak link is neither the plastic nor the rod — bearing pressure on the printed socket is ~0.19 MPa against ~40 MPa for ABS, a 200× margin. It's the wall screws. Use studs or proper anchors.