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.

🟩 𝗪𝗛𝗔𝗧 𝗠𝗔𝗞𝗘𝗦 𝗜𝗧 𝗪𝗢𝗥𝗞

▸ 𝗥𝗲𝘂𝘀𝗲𝘀 𝗘𝗺𝗽𝘁𝘆 𝗦𝗽𝗼𝗼𝗹𝘀 — Built around two empty 1 kg filament spools, the part of every roll that usually ends up in the trash. Spools not included.

▸ 𝗢𝗻𝗲 𝗟𝗼𝗼𝗽 𝗔𝗿𝗼𝘂𝗻𝗱 𝗕𝗼𝘁𝗵 𝗦𝗽𝗼𝗼𝗹𝘀 — The cord wraps around both spools at once, between the flanges, and the flanges hold the coil in place.

▸ 𝗖𝗮𝗿𝗿𝘆 𝗛𝗮𝗻𝗱𝗹𝗲 — A bar on the top plate spans both spools, so the whole reel lifts by one grip.

▸ 𝗔𝗹𝗹-𝗣𝗿𝗶𝗻𝘁𝗲𝗱 𝗛𝗮𝗿𝗱𝘄𝗮𝗿𝗲 — Two printed screws, two knurled nuts and two bushings. No bolts to buy.

▸ 𝗡𝗼 𝗧𝗼𝗼𝗹𝘀 — The knurled nuts tighten by hand.

▸ 𝗗𝗲𝘀𝗶𝗴𝗻𝗲𝗱 𝗶𝗻 𝗦𝗼𝗹𝗶𝗱𝗪𝗼𝗿𝗸𝘀 — Modeled from scratch, printed and tested, not a remix.

🟩 𝗖𝗛𝗘𝗖𝗞 𝗬𝗢𝗨𝗥 𝗦𝗣𝗢𝗢𝗟𝗦 𝗙𝗜𝗥𝗦𝗧

▸ The kit was sized from measurements of 1 kg spools from 16 brands: 195–205mm across, 58–70mm wide, with a 51.5–56mm center hole. Check yours against those numbers.

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

🟩 𝗔𝗦𝗦𝗘𝗠𝗕𝗟𝗬

▸ Push a printed screw up through each post of the base plate.

▸ Lower a spool over each post.

▸ Seat a bushing in the center hole on top of each spool.

▸ Lay the handle plate on top and spin a knurled nut onto each screw, hand tight.

The included guide walks through every step with photos.

🟩 𝗣𝗥𝗜𝗡𝗧 𝗦𝗘𝗧𝗧𝗜𝗡𝗚𝗦

Tree supports on the handle plate only · Z anti-aliasing · 0.20mm layer height · 3 walls · 15% gyroid infill · 5 top and 3 bottom shells · auto brim · PET-G · 250 °C nozzle · 80 °C bed

▸ 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.

▸ 𝗛𝗮𝗻𝗱𝗹𝗲 𝗣𝗹𝗮𝘁𝗲 — 4h 43m and 100g.

▸ 𝗕𝗮𝘀𝗲 𝗣𝗹𝗮𝘁𝗲 — 4h 31m and 153g.

▸ 𝗦𝗰𝗿𝗲𝘄𝘀, 𝗡𝘂𝘁𝘀 𝗮𝗻𝗱 𝗕𝘂𝘀𝗵𝗶𝗻𝗴𝘀 — 5h 39m and 100g.

One 3MF carries all three plates with the PET-G profile already set up. Wind it and carry it. 🔌