UniCoFil certainly has some unique color transition filaments. The spool transitions slowly between colors. Unfortunately my prints were not big enough to get very cool transitions. I would consider this filament for the right type of print. You can improve the transitions by using more infill. UniCoFil recommends prints of at least 45 grams to transition through the entire spectrum. Despite the need for larger models, UniCoFil prints very well. This filament is sold in 750g on plastic spools.
http://www.unicofil.de/en/pla-rainbow-copy.html
Recommended Print Settings
Temperatures
- Hot End - 210 Celsius
- Bed - 60 Celsius
Speeds
- Print Speed - 50mm/s
- First Layer Speed - 30mm/s
- Perimeter Speed - 30mm/s
- Infill Speed - 60mm/s
- Cooling Fan Speed - 100%
Structure
- Perimeters - 2 or 0.8mm - 1mm
- Top and Bottom Layers - 4 to 5 or 1mm
- Infill - 15%
Retraction
- Distance - 0.8mm*
- Speed - 35mm*
- Z-Lift - 0.6mm
Bridging
- Bridge Flow - 85%
- Bridge Speed - 30mm/s
- Bridge Cooling - 100%
Physical
- Bed Adhesion - Glue Stick
- Nozzle Type - Brass (Standard)
- Enclosure - None