PLA Prime Print Settings: Temperature, Drying

COEX PLA Prime print settings

Print PLA Prime with a 220–240°C nozzle, a 0–60°C bed and the fan up to 100%, and dry it at 55°C for 3–6 hours.

These are COEX 3D's recommended starting settings, made to match the COEX 3D filament settings tables for every filament we make in Green Bay, Wisconsin. Treat each value as a starting point and adjust it for your printer.

1. Material notes

Keep filament dry: store it sealed, and dry it again only after the spool has been exposed to air
PLA is less hygroscopic than other materials, but proper storage helps maintain quality
Dry an opened spool at 55°C for 3–6 hours
Check for any visible damage before use

2. Temperature settings

Nozzle temperature: 220–240°C

Bed temperature: 0–60°C

Wash the bed often for good adhesion: use dish soap and rinse thoroughly to remove oils
Bed adhesion: often none is needed on PEI; otherwise use a glue stick, painter's tape or WELD3D
Use a brim for tall or large prints
Keep the ambient temperature stable

3. Basic parameters

PLA Prime prints like Standard PLA, with the same ease of printing, surface quality and dimensional accuracy, but it is significantly stronger after annealing.

COEX PLA Prime basic parameters by nozzle size
Nozzle	Layer height	Line width	Max volumetric speed	Nozzle temperature
0.4mm	0.2mm	0.42mm	12.0 mm³/s	220°C
0.6mm	0.3mm	0.62mm	27.0 mm³/s	225°C
0.8mm	0.4mm	0.82mm	48.0 mm³/s	230°C
1.0mm	0.5mm	1.02mm	75.0 mm³/s	235°C

4. Speed settings

0.4mm nozzle (max volumetric speed 12.0 mm³/s)

COEX PLA Prime speeds for a 0.4mm nozzle
Line type	Percentage	Speed
External perimeter	50%	71.43 mm/s
Internal perimeters	75%	107.14 mm/s
Infill	100%	142.86 mm/s
Top/bottom	60%	85.71 mm/s
First layer	30%	42.86 mm/s

0.6mm nozzle (max volumetric speed 27.0 mm³/s)

COEX PLA Prime speeds for a 0.6mm nozzle
Line type	Percentage	Speed
External perimeter	50%	72.58 mm/s
Internal perimeters	75%	108.87 mm/s
Infill	100%	145.16 mm/s
Top/bottom	60%	87.10 mm/s
First layer	30%	43.55 mm/s

0.8mm nozzle (max volumetric speed 48.0 mm³/s)

COEX PLA Prime speeds for a 0.8mm nozzle
Line type	Percentage	Speed
External perimeter	50%	73.17 mm/s
Internal perimeters	75%	109.76 mm/s
Infill	100%	146.34 mm/s
Top/bottom	60%	87.80 mm/s
First layer	30%	43.90 mm/s

1.0mm nozzle (max volumetric speed 75.0 mm³/s)

COEX PLA Prime speeds for a 1.0mm nozzle
Line type	Percentage	Speed
External perimeter	50%	73.53 mm/s
Internal perimeters	75%	110.29 mm/s
Infill	100%	147.06 mm/s
Top/bottom	60%	88.24 mm/s
First layer	30%	44.12 mm/s

5. Retraction settings

COEX PLA Prime retraction by nozzle size
Nozzle	Distance	Speed	Z-hop
0.4mm	0.5–0.8mm	45mm/s	0.2mm
0.6mm	0.6–1.0mm	45mm/s	0.2mm
0.8mm	0.8–1.2mm	40mm/s	0.2mm
1.0mm	1.0–1.5mm	35mm/s	0.2mm

6. Cooling settings

Cooling configuration:

First layer: 0% (fan off)
General printing: 100% base fan speed
Bridges and overhangs: 100% fan speed
Layers under 15 seconds: 100% fan speed

Critical considerations:

PLA Prime needs maximum cooling for best results
Full fan speed helps with bridging and overhangs
The first layer needs no cooling for good adhesion
Small parts need maximum cooling

7. Troubleshooting

COEX PLA Prime troubleshooting
Problem	Solution
Poor layer adhesion	Increase the nozzle temperature by 5–10°C Reduce cooling fan speed for the first few layers Clean the build surface with IPA
Warping	Increase the bed temperature to 60°C Add a brim (5–10mm) Make sure there are no drafts in the printing area
Stringing	Lower the temperature by 5°C Increase retraction speed to 45mm/s Adjust retraction distance
Under-extrusion	Increase the temperature by 5–10°C Clean the nozzle or try a cold pull Check filament quality
Poor overhangs	Make sure cooling is at 100% Reduce the temperature by 5°C Reduce print speed by 50%

Please note: These printing parameters are initial recommendations based on our experience. They may need adjustment for your specific 3D printer, environmental conditions and the geometry of the part you are printing. Use them as a starting point and fine-tune them for your needs.