This holder system takes two clothes rails from IKEA Komplement series and turns them into filament spool rack.
It's also expandable!
WHY IKEA?
I've seen a lot of different filament racks like this one, but they either were designed to accommodate wood or metal cable conduits (which aren't available in my country).
So I thought:
Where would I find a suitable rail that would be available worldwide?
The answer?
In IKEA!
THE DESIGN
This is pretty much “Just Another Spool Rack”, but I designed it to be easy.
You can set holders one under the other for ease of mounting - just measure and mount the first one, then You can rest the next one on top or push it up to the bottom.
Spool will have enough space to be put in or taken out (around 25 mm free space for 200 mm diameter spool)
❗ IMPORTANT❗
If you're mounting your rack under ceiling or overhang please leave at last 6 cm space above highest holder's top surface to be able to store and retrieve spools effortlessly (or at all 😬)
Each holder is:
250 mm high
30 mm wide
(20 mm for slimmed Middle holder)
195 mm deep
133 g of filament (90 g for 20 mm Middle)
0.2 mm layer height 3 walls 20% adaptive cubic infill
THE MOUNTING
Mounting holes have a space provided for enlarged M5 15mm diameter washer to distribute load more evenly.
Screw hole is 5 mm in diameter - should be plenty even for screws included with 8 mm wall anchors.
Access hole for screwdriver is 10 mm in diameter.
Depth from washer resting spot to the back wall is 10 mm, so it's pretty easy to mount it to the side of a wardrobe with 4 x 25 mm wood screw and it shouldn't protrude on the other side.
Mounting points are exactly 190 mm apart.
In case You're mounting to the wall i provide guides for drilling 6 mm and 8mm wall anchor holes easier
Just quickly print the drill guide (only 2 layers!) for your wall anchors and position it exactly how You want your holders to mount - they are same exact XY dimensions!
💡 Tip of the day:
Glue the washers in place with a drop of CA glue before mounting.
THE SYSTEM
What started as a one-off design only for the shortest clothes rails quickly evolved into a modular system able to accommodate all the IKEA Komplement's lengths. It also allows for expanding the racks by adding more segments using the connector holder.
I wanted to keep it simple, so the whole system consist of only 4 main parts (one having a 20 mm slimmed variant).
M5 enlarged washers (15 mm diameter) - 2 per holder
and your choice of mounting options:
Wall anchors 6 mm diameter
Wall anchors 8 mm diameter (recommend)
Wood screws (for mounting on the side of a wardrobe)
4x25 mm or 4,5x25 mm wood screws (both won't protrude 15 mm chipboard if you use washers)
I WANT IT LONGER THAN ONE SEGMENT
No worries, I got you. You basically need to swap one of the ends with connection holder and treat it as a new start. So if you're building a 2 segment rack you just need:
L+R holders at the ends
1x connection holder
1x middle holder for every pair of 75 or 100 cm rails (for support)
HOW MUCH SPACE WILL IT ACTUALLY TAKE?
Just consult the table above for Actual rails lengths, plan how many you want to stack in width and calculate accordingly:
Left and Right Holder add 20 mm of total length each.
Middle Holder doesn't add nor take up length since it's passtrough for the rail.
Connecting Holder adds 10 mm length total.
For example a “50 cm + 100 cm” would equal to:
20 mm from left holder + 45 cm rail + 10 mm connecting holder + 95 cm rail + 20 mm right holder
❗ All the parts are designed to print without any supports! ❗
CHANGELOG:
5.08.2025 - changed 75 cm segment capacity from 9 to 8 after considering the Holder Middle - added link to single row interactive configurator on github pages
