This filament from Prusa research is amazingly bright orange. It definitely has exceeded my camera’s sensor. It may be subtle interactions with UV which makes it extra bright. I will work on improving the photo. Over time the Prusa Orange has shifted as I have parts from different times that each has a slight variation on shade. Now that Prusa is developing their own filament I suspect the color will become more consistent. Prusa filament is sold in 1kg sizes on plastic spools. However due to location it can have a high shipping cost.

https://shop.prusa3d.com/en/filament/218-prusa-orange-petg-filament-1kg.html

Recommended Print Settings

Temperatures

• Hot End - 240 Celsius
• Bed - 85 Celsius

Speeds

• Print Speed - 50mm/s
• First Layer Speed - 30mm/s
• Perimeter Speed - 30mm/s
• Infill Speed - 60mm/s
• Cooling Fan Speed - 30-80%

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 - 80%

Physical

• Bed Adhesion - Glue Stick (Required on PEI)
• Nozzle Type - Brass (Standard)
• Enclosure - None