CANVAS Tension Fix (Elegoo Centuri Carbon 1 Conversion)

This may or may not fix your issue... but it fixed mine!

Adding the Canvas system to your Centuri Carbon 1 adds extra drag to the filament lines, which can cause under-extrusion, loading failures, clogs, war, failed prints, and male pattern baldness.

Since getting my Centuri Carbon 1 around release date, I had only ever experienced a single failed print (due to running out of filament and shoving in damp spool in a rush—lesson learned). However, since fitting the CANVAS roughly three weeks ago, I’ve had a 99.9% failure rate.

The issues I ran into:

• Severe under-extrusion

• Loading/color-changing failures

• Indefinite random pauses (lost a quarter spool while it sat "paused," continuously purging into the poop bin)

What I tried first:

• Adjusted toolhead tension: Slight improvement, but the errors persisted.

• Fitted the all-metal extruder gear from the original extruder: Marginally better, but still terrible.

• Increased print temps by 10°C: Slight improvement from absolute junk.

Using all the above tweaks at the same time, it just about managed to produce:

I was ready to launch the whole thing off the roof!

While adjusting head tension, I noticed the drive gear divots left on the filament by the CANVAS were far too deep. That got me thinking: can the tension on the CANVAS itself be adjusted? The answer was no—not at all, not that is until now.

I designed and printed shims to slip under the CANVAS tension arms to relieve some of the excess clamping force. On my unit, the final shim thicknesses were:

• Slot 1: 0.85 mm*

• Slot 2: 0.80 mm*

• Slot 3: 0.80 mm

• Slot 4: 0.75 mm*

(Slots 1, 2, and 4 needed a quick trim with a craft knife along the outer perimeter to seat cleanly. Printed at 0.2 mm layer height, actual effective dimensions were roughly 0.83 mm, 0.78 mm, 0.80 mm, and 0.71 mm).

The result: Filament now pushes and pulls through the CANVAS with minimal resistance and zero buckling, while still retaining enough grip to drive the motor properly (and halt if the top gear is blocked).

I can't promise this is a universal fix for you, but it has resolved the issue on my setup!