Big Macks 3D

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Modular Spool Rack

Modular Spool Rack

Stack 'em high, stack 'em wide, this over-the-top system lets you build what you need.

$5.00

FROM $39.99 printed & shipped

One rack, repeated as many times as you need, sized so your printer can make it. No supports or extra hardware required, everything you need comes off your printer.

Configure & buy

Stackable, rackable, no supports or extra hardware, sizes much wider than your printer, leveling feet, cross-ties for support even caps for the unused rod holes. It's safe to say we went over the top on this one!

The rods tightens like a turnbuckle. Threaded pegs screw into each side plate, and every rod has a left-hand thread at one end and a right-hand thread at the other. Wind a rod on and it draws both plates in together, until both ends seat on the same turn. A cross-tie across the back keeps the bay square, caps close off the outside ends, and stacking clips lock one rack on top of another. Every part is printed — there is no hardware to buy.

It stands on leveling feet that cup the bottom of each plate; turn a knob to take up an uneven floor. Your files come plated for your printer, with the rods sized to your bed — on a smaller bed they print shorter, and short threaded extensions make up the width. Pick your colors, preview the rack in 3D, and see exactly what you will print before you buy.

If there's anything we didn’t think of, let us know!

Highlights

Grows sideways

Bays share their side plates, so each extra bay adds one plate, two rods and a cross-tie.

Grows upwards

Stacking clips and cross ties let you go as high as you need.

Threaded, no hardware

Rods wind onto printed threaded pegs like a turnbuckle, pulling the plates tight at both ends at once. Nothing to buy, nothing to glue.

Level on any floor

Feet cup the bottom of each plate, and a lobed knob on each adjusts 12 mm. The knob's chamfered base slides over carpet instead of catching.

Plated for your printer

The rods are sized to your bed, and the 3MF comes laid out for it, one color per plate.

Configure & buy

In your download

  • Print-ready 3MF platesEvery part laid out on plates packed to your printer's bed and sorted by filament color — open in your slicer and go.
  • Every STLThe individual part meshes as well, if you'd rather arrange the plates yourself.
  • A parts listA manifest of every part and how many of each, so you know exactly what you're printing.
  • An assembled 3D model in your colorsThe whole thing built and colored the way you configured it — your reference while you print and put it together.

Configure your rack

Overall size
Wide
Deep
Tall

Outside to outside across the end plates’ feet, back of the cross-tie to the front of the plates, and floor to top with the leveling feet wound all the way in — they let out up to 12 mm more.

Colors
PrimarySecondaryTertiary

Three groups: the side plates and their feet; the rods, rod extensions and rear cross-tie; and the small parts — threaded pegs, end caps, clips and leveling knobs. Each prints on its own plate in the 3MF.

Price: $5.00

Click “Update 3D preview” to see your rack in 3D.
How would you like it?

Add your printer

We size every model to your printer, so we need to know how big it can print. It’ll be saved for the next person with the same machine.

These are the printable sizes — the biggest part your printer can actually make, the numbers your slicer shows as the build volume. Not the bed or the removable plate, which are usually a little bigger.

Optional — build plate and printer-stand measurements

The build plate is the removable sheet you pop prints off; it’s usually a little bigger than the printable area. A plate rack is cut to the sheet, not the bed.

A printer stand is built around your printer’s feet. Give us all four and we can build you one — or skip them and add them later. Measure the BASE — the slab it stands on — not the machine’s widest point. Gantry legs, Z columns and X arms usually overhang the base and hold up nothing.

Where to measure your printer's feet Looking down on the printer's base with the front at the bottom. A is the full width of the base across the front. B is the diameter of one foot. C is from the base's front edge back to the center of the front foot. D is from the base's side edge in to that same center. FRONT rear feet — not needed A D C B
Looking down on the base, front at the bottom.

My printers

Every model is sized to the printer doing the printing, and the logo and engraved sizes come as color inlays only where you can print them. The one at the top is the one new configurations start on — pick any row to make it that.

Adding one is the same picker: choose it in My Printer, or .

Choose your colors

Every model on the site opens in these three. Primary is the largest surface, secondary the part that contrasts with it, and tertiary the accent — feet, trim, the parts that tie it together.