Filaments

Keeping notes on various FDM printing filaments here. Prices are per kilogram spool unless stated otherwise. Printing was done on a Bambu Carbon X1C unless stated otherwise.

Polylactic acid (PLA)

• Bambu silky green 2024-06 $25: beautiful results

Thermoplastic polyurethane (TPU)

• Overture 95A green 2024-06 $30: stringy as hell

Acrylonitrile butadiene styrene (ABS)

• Bambu black/green 2024-06 $14 (4kg @ $56): solid workhorse

High impact polystyrene (HIPS)

Support material for ABS/PET, dissolvable

• Bambu green Support-G $80 ($40/.5kg): expensive!

Acrylic styrene acrylonitrile (ASA)

• Atomic Filaments black 2024-06 $19 (7kg @ $130): lay the first layer at 105, and remaining layers at 115.

Polycarbonate (PC)

• Bambu clear black 2024-06 $40: befouled my .4mm hotend. Very lovely when it prints.
  • warping at 115, stick to builtin 110

Polyamide Nylon (PA)

• Atomic Filaments black

Polyethylene terephthalate (PET)

Polyethylene terephthalate glycol (PETG)

• Atomic Filaments black Carbon Fiber: result is very tough
• Bambu Support-W (breakaway PLA support) $70 ($35/.5kg): works well enough, expensive

Bambu filaments parameter table

Parameter	PLA Aero	ASA	ASA Aero
Print temp C	210-260	240-270	240-280
Print speed mm/s	<180	<250	<150
Flow rate ratio	0.5-0.8	0.93-0.97	0.45-0.80
Filament density g/cm³	1.21	1.05	0.99
Foaming rate	0-120%	n/a	0-110%
Vol. expansion ratio	100-220%	102%	100-210%
Print density g/cm³	0.55-1.05	1.03	0.46-0.97
Tensile strength MPa			32±4
Breaking elongation rate			5.1% ± 1.6%
Bending modulus MPa			1510±120
Bending strength MPa			58±6
Impact strength kJ/m²			32.0±2.5
Melt index g/10min			1.56 ± 0.5
Melting temp C			204
Heat deflection temp C			85
Vicat softening temp C			80