Pegboard Spool Holder (3 × 5/8" Dowel Version) – PETG, 0.6 mm Nozzle

Why this design

Three-dowel layout spreads the load and keeps 1 kg spools stable

Simple, rugged geometry optimized for 0.6 mm extrusion

Quick print with coarse layers, strong enough for daily shop use

Print Settings (tested)

Material: PETG

Nozzle: 0.6 mm

Layer height: 0.28 mm

Line width: 0.6 mm for all perimeters/top/bottom/infill

Perimeters (walls): 3–4 (I used 4 for extra stiffness)

Top/Bottom: 5–6 layers

Infill: 20–30% (Gyroid or Grid)

Supports: Not required for most printers (enable only if your slicer flags steep overhangs)

Bed adhesion: Skirt or brim as needed

Orientation: Mounting face down on the bed so pegboard hooks/holes print upward

Tip: PETG benefits from moderate cooling (20–40%) and slower outer walls for clean peg holes.

Hardware

3 × 5/8" (15.9 mm) dowels — wood, aluminum, or carbon fiber all work

Suggested length: 180–220 mm each (tune to your spool width and clearance)

Optional: small dab of CA glue or screws/pins if you want the dowels permanent

Assembly

Print the parts. Let them fully cool so peg holes stay true.

Cut three 5/8" dowels to your preferred length.

Press-fit the dowels into the sockets/holes. If the fit is loose, add a wrap of tape or a touch of CA glue.

Hang on your pegboard and load a spool. Check that the outer arms clear adjacent pegs/rails.

Compatibility & Notes

Designed around 5/8" dowels. If your dowels vary slightly, scale the model 1–2% in XY for a snug fit.

Works best on sturdy pegboards and secure mounting locations if you plan to hold heavy spools.

If you see stringing with PETG, raise retraction slightly and lower print temp by 5–10 °C.