Zebco Spincast Rod Vertical Wall Rack – 5 Rods, Staggered, Parametric

A compact vertical wall rack for five spincast combos. Alternate rods sit 120 mm higher on narrow pillars, so neighboring reels and cranks sit at different heights and don't collide. That lets five rods fit on a rack only 244 mm wide, which fits across a Prusa Core One / MK4 bed.

Designed with Claude assistance using Opus 5/5.5 leveraging build123d around the Zebco 202, 404 and 33, and it should work with most spincast combos with similar handles and blanks.

Parts

• Base (rod_rack_base): cups for the rod bases. Positions 1, 3 and 5 sit on the shelf; positions 2 and 4 sit on raised pillars. Every cup has a drain hole.

• Top clip (rod_rack_top_clip): snap-in slots that grip the rod blank just above the fore grip. A relief cut beside each slot turns its sides into flexible tines, so one generic slot fits any blank from 9.3 to 11.3 mm. The rod clicks in and stays put.

Files

• 3MF: rod_rack_base.3mf, rod_rack_top_clip.3mf. Ready-to-print PrusaSlicer projects with the settings I used: PETG, 0.6 mm nozzle, 0.32 mm Structural, 3 perimeters, 4 top and bottom layers, 20% gyroid, seams at the rear. They're set up for the Core One. For other printers or nozzles, load the 3MF and switch the printer profile, or start from the STLs.  The prints shown are in Prusament PETG Galaxy Black.

• STL: rod_rack_base.stl, rod_rack_top_clip.stl. The plain meshes, already oriented for printing: shelf-side down, back plate at the rear. Use these with any slicer.

• STEP: rod_rack_base.step, rod_rack_top_clip.step. Exact CAD geometry for remixing in Fusion, Onshape, FreeCAD or similar. The STEP keeps true curves and flat faces, so it's much easier to edit than an STL.

• Source: rod_rack.py. The parametric build123d script that generates everything above (except .3mf). Change the parameters to fit your own rods and regenerate (see Customize it below).

Print settings (as printed: PETG, 0.6 mm nozzle)

• 0.32 mm layers (0.2–0.3 mm with a 0.4 nozzle)

• 3 perimeters (4 with a 0.4 nozzle), 4 top and bottom layers

• 20% gyroid infill

• Both parts print shelf-side down, no supports

• Set seam position to Rear to keep seams off the clip's tines

Hardware

• 6 × #8 flat-head screws (3 per part). Use 2" wood screws into a stud, or 1-1/4" with drywall anchors rated for #8.  Since I had studs stack together where I mounted only use 4 screws.

• The holes are countersunk for #8 wood screws or M4 flat-head machine screws.

Mounting

1. Mount the base at the height you want, level.

2. Seat a raised rod (position 2 or 4) in its cup and hold the top clip so a slot meets bare blank about 20 mm above the fore grip. For my Zebcos that's about 482.6 mm / 19 in from the top of the base to the bottom of the clip. Mark the screw holes and mount it.

3. Keep the ends of both parts lined up vertically so every slot sits directly above its cup.

4. Hang the rods with the reels facing out, and snap the blanks into the clip.

Customize it!

The rack is generated from a parametric Python script (rod_rack.py, included) using build123d. With uv installed, run:

uv run rod_rack.py

It regenerates the STL and STEP files, and uv installs the dependencies automatically. Key parameters at the top of the file:

• ROD_COUNT, SPACING: number of rods and center-to-center distance

• SLOT_MIN_D, SLOT_MAX_D: thinnest and thickest blank the clip should hold

• SNAP_INTERFERENCE: how firmly the clip grips (lower = easier snap-in)

• BASE_D: cup diameter (your butt cap plus about 3 mm)

• STAGGER_H: height difference between floor and raised rods (at least your reel's length along the rod)

• STAGGER = False: all cups on the shelf, for rods without big reels

The script checks the geometry and stops with an error if a change would make the pillars hit a neighboring handle or leave the tines too little room to flex.

Tips

• Rods too hard to snap in: lower SNAP_INTERFERENCE to 1.0. Rods too loose: raise it to 1.6. A 0.6 nozzle prints the slot mouths slightly narrow, so the first print may be a bit stiff.

• Thinner rods are gripped higher up their blanks on the floor positions. If one feels loose, put it on a pillar instead. All the cups are the same size.