Pull the CANVAS spools back in and get your shelf space back. Relocation brackets for spools 3 and 4 on the Elegoo Centauri Carbon 2, using the hardware from the mounts you're replacing — nothing extra to buy.

Elegoo's multi-color setup hangs the filament rolls out past the back of the printer, which balloons the footprint well beyond the original Centauri Carbon. Mine stopped fitting on its shelf. These fix that.

What moves where

• Spool 4 (top right) — pulled in 65 mm (2.5"). The roll sits roughly flush with the back of the printer.
• Spool 3 (bottom right) — pulled in 90 mm (3.5"). The roll sits roughly flush with the flat of the panel, just before the chamfered corner.
• Both reuse the existing screws and hardware from the stock mounts.

Which version do I need?
Printing in PLA? Use V4. That's the short answer for most people.

• V4 — 25% thicker, prints without supports, holds its shape in PLA. Sets the spool 2 mm further from the printer than V2. Recommended.
• V2 — the original. Matches Elegoo's own spool offset exactly, so it's closest to stock spacing. Print it in PETG, ASA or something with higher heat tolerance — after two months mine sagged in PLA. It still worked, it just looked wrong.

Pairs with: the CC2 Poop Chute & Bin
Same problem, other end of the printer. These mounts shrink the footprint behind the CC2; the chute keeps the purge from adding depth in front of it. Run both and the printer stays shelf-sized on every side.
→ https://www.nexprint.com/en/models/G5035615 

Print settings

• Print with the letters facing down
• 3 bottom and 4 top layers — those carry the load in this orientation
• Cubic infill at 50%
• No supports, no raft, no brim (V4). Light cleanup around the recessed shoulder screw head.

Printed it?
Let me know in the comments what material you used and how it's holding up — I'm tracking which ones stay put.