Obtained a pile of outdated filament spools taking over an excessive amount of area? Earlier than you throw them away, you may need to contemplate how one can upcycle them in order that they don’t go to waste. Listed here are some concepts.
Purchase refills and get monetary savings
Credit score: Bambu Lab
The obvious use for outdated spools is new filament. Some filament producers promote refills that don’t embody a spool however as a substitute wind the filament round a cardboard insert as a substitute. This ought to be transferred to an actual spool earlier than you narrow it unfastened and feed it into your 3D printer.
If we take Bambu Lab for example, you’ll save $3 per roll of filament on the MSRP of primary PLA if you happen to order a refill as a substitute of pre-spooled filament. Some colours are solely ever out there as refills, which implies some discover themselves needing to purchase or print spools. For those who like the thought of saving cash, preserve a number of spare spools useful for future refills.
Construct a filament respooler
Credit score: GekoPrime / Printables
A filament respooler means that you can rescue a roll of filament that has one way or the other slipped off a spool (or a refill that was lower unfastened earlier than being transferred to a correct spool). Of all of the initiatives on the market, the Pastamatic might be the very best identified.
You’ll want a spare spool to make use of a respooler, so it’s all the time a good suggestion to maintain one able to go within the winder simply in case. These additionally work for splicing filament or for winding up filament you’ve made your self.
Arrange rope, wire, cable, and extra
Credit score: Pixel Studio / MakerWorld
All kinds of issues might be tidied up by being wound round a spool. These are glorious cable organizers for extension cords, community cable, vacation lights, LED strips, and extra. You may print a easy spool cable clip to make life somewhat simpler. Another concepts embody rope, wire, yarn, and different materials.
There are some particular fashions on the market designed for cardboard spools (like these from Elegoo) and plastic spools (like these from Bambu Lab).
Flip them into storage for screws and different gadgets
Credit score: mikann / MakerWorld
One other extremely sensible use for spools is to make use of them as storage. There are an terrible lot of those initiatives on the market, since 3D printing lovers completely love placing leftovers to good use. They’re excellent for storing challenge supplies like magnets, screws, insertable threads, and different small gadgets.
Designs embody purpose-built Bambu Lab spool filament packing containers, and comparable designs for Sunlu filament. There are even customizable vertical designs that you may spin, although it’s price noting that the usual horizontal designs stack properly and are straightforward to rotate.
These don’t need to be a 3D printing storage answer; they could possibly be a great way to tidy up a workshop, storage, shed, craft space, and even kitchen.
Cat toys
Credit score: Minimal / MakerWorld
Most likely essentially the most enjoyable design on this listing, particularly if you happen to occur to be a cat, the cardboard spool cat toy (in addition to plastic variants for Bambu Lab and others) is a reasonably widespread design within the cat toy world. I do know as a result of I’ve had numerous toys like this one, and my cats love them.
A small lip is printed that attaches to the spool, stopping no matter you place inside (normally a ball) from falling out. Due to the spherical nature of the toy, the ball retains transferring every time a cat tries to retrieve it. These work nice as a part of supervised playtime, the place you encourage play and reward your cat with a deal with on the finish.
Create a spool lamp
Credit score: Hugo / MakerWorld
I’ll admit that this can be a little bit of a bizarre one, however you possibly can’t say it’s not helpful. Flip your spools right into a easy 360-degree gentle with some LED strips and an influence provide. It is a primary blueprint that you may construct on, and I’d personally like to see it used with an ESP32 operating WLED for all kinds of colourful controls and fancy sequences.
Like a lot of the different initiatives on this listing, this concept has been tailored and remixed into new designs, together with a vertically-mounted spool gentle that makes use of a generic LED strip.
Wargaming terrain
For those who purchased your 3D printer to take your tabletop wargaming interest to the following stage, you’re going to like this. STL market Digital Taxidermy has greater than 50 “spool tower” designs to select from that put used spools to good use on the battlefield.
Spools give these parts glorious structural integrity whereas minimizing how a lot filament you’ll want to make use of. There are a number of take a look at information out there without cost, with different designs starting from £1.99 to £9.99 (round $2.50 to $13). That’s not a foul worth given the workmanship concerned and the truth that you possibly can print them time and time once more.
Don’t neglect there are some good methods to make use of up your previous few bits of filament too!

