Printing

The design is printing friendly (PC with 65° overhang or ABS with 50° overhang) and designed to maximize speed, minimize filament usage while having good thermal isolation properties.

You should be able to get good enough results even if your roll is moist; permitting you to bootstrap your cooking.

Print with ABS or PC. Do not use PLA or PETG because their melting temperature is too low.

An option is to do the first with ABS so you can cook your PC. Then print it again in PC. That said, my ABS cover was able to sustain 95℃ bed temperature overnight just fine. As a matter of fact, the Bambulab Reusable Spool is made of ABS!

The cover is designed for the AMS spool sizing, which is 202 mm in diameter and 70 mm wide.

Print settings

0.4mm nozzle, 0.20mm Standard, 10% infill, infill direction: 0°, rectilinear infill (20min faster than grid), Seam position Nearest. Optionally use brims if ABS, not necessary with PC.

Use "Auto Orient" then "Arrange all objects" with "Auto rotate for arrangement" checked. It should put the cover at 45° on the bed.

If not, place the cover top down at 45° on the bed by rotating 45° on the Z axis.

Printing time is 5½h~6½h and uses less than 220g of filament.

Usage

Cooking

Do not use the Dry filament program in the printer. We can use slightly higher temperatures for better drying because of the airflow. ♨️

Tested with both ABS spools (Bambulab) and cardboard spools (Overture, Polylite).

1. Put the high temp plate.
2. Adjust the plate Z height at the level where the cover's exhaust is at the Aux fan.
3. Put the Aux fan and Chamber fans at 30%.
4. Increase the bed temperature to the desired level (between 70℃ and 95℃). See https://maruel.ca/post/bambulab_filaments/ for a one pager including bed temperature for popular filaments.
5. Let your spool cook overnight. Turn mid-cook if you are insomniac.

After cooking

To cool down the plate, put the Aux fan and Chamber fans at 100% and press Home. Leave the door open and the bed should cool down within 3 minutes or so.

Don't forget to switch plates if you print PLA or TPU.

Note that if you take a high temperature cooking filament and directly put it in the AMS right after, the filament will have the AMS gears deform the filament a little. It doesn't seem to be a problem.

Contact

The design is fully parametric. Contact me if you want different sizes, either smaller or larger, or want to sell printed versions.