Free Model Download

Extension Cord Spooler

Two empty filament spools and a handful of printed parts make a carry reel for an extension cord. The kit clamps the spools side by side, the cord wraps around both of them in one long loop, and a handle on top lets you pick the whole thing up.

An orange extension cord wound around two navy filament spools held side by side by a green handle plate and black knurled nuts

Downloads

Get the Files

One 3MF carries all three plates with the tested PET-G profile already set up, and the five STLs are there for bringing your own: the base plate, the handle plate, and one screw, nut and bushing. Print two of each piece of hardware.

★
Download from Creality Cloud — it makes a real difference.

Every download through Creality Cloud earns points that help keep my models free and my pages running. If you have an account, downloading from there is the best way to support the work at no cost to you.

Download on Creality Cloud

The 3MF is the faster path — open it and slice. A full print & assembly guide is attached to the Creality listing.

▤
Print & Assembly Guide

The same guide attached to the model listings, hosted here so you can read it before you print — PDF · 5 pages · 1668 KB

Open the Guide

Before You Slice

Check Your Spools

You need two empty 1 kg filament spools (not included). The kit was sized from measurements of 1 kg spools from 16 brands: 195–205 mm across, 58–70 mm wide, with a 51.5–56 mm center hole. Check yours against those numbers.

Check your bed. The base and the handle plate are each 305 mm long. They fit a 260 mm bed laid corner to corner, which is how the 3MF has them.

What Makes It Work

A Second Job for Empty Spools

Every roll of filament ends as an empty spool that usually goes in the trash. Two of them, clamped side by side, make a reel with flanges already built in.

An orange extension cord wound around two navy filament spools held side by side by a green handle plate and black knurled nuts
One Loop Around Both Spools
The cord wraps around both spools at once, between the flanges, and the flanges hold the coil in place.
A hand carrying the loaded spooler by its green handle on a deck
Carry Handle
A bar on the top plate spans both spools, so the whole reel lifts by one grip.
The green base plate and handle plate, two black screws, two knurled nuts and two bushings laid out beside two empty navy spools
All-Printed Hardware
Two printed screws, two knurled nuts and two bushings. No bolts to buy.
A hand tightening a black knurled nut onto a printed screw on top of the green handle plate
No Tools
Push a screw up through each post of the base, lower a spool over each post, seat a bushing in each spool, lay the handle plate on top and spin a knurled nut onto each screw, hand tight.

Print Settings

Slice It Right

These are the settings baked into the 3MF, sliced for a Creality Hi with a 0.4 mm nozzle. Open it in Creality Print or any slicer that reads 3MF projects and it is ready to go.

The whole kit is 14 h 53 m and 353 g — 119.31 m of filament, roughly $8.82 in material. The handle plate is 4 h 43 m and 100 g, the base plate 4 h 31 m and 153 g, and the screws, nuts and bushings 5 h 39 m and 100 g.

Print it in PET-G. My first prototype was PLA and its handle was weak, so I changed the handle’s shape and printed the final one in PET-G.

Supports
Tree, handle plate only
Layer Height
0.20 mm
Walls
3
Top / Bottom
5 / 3
Infill
15% Gyroid
Z Anti-Aliasing
On
Material
PET-G · 250 °C / 80 °C
Largest Part
305 × 100 mm
Slice data: three plates in PET-G, 14 h 53 m and 353 g for the whole kit, supports on the handle plate only

More models and tested slicer settings on my Creality Cloud profile.

View Profile

Released under CC BY-NC-ND 4.0 — free for personal use, credit appreciated, no commercial use or derivatives.