1.75 mm FDM filament in multiple colours. Credit: Suit, CC BY-SA 4.0, Wikimedia Commons.
Overview
The choice of filament material affects print temperature, required print environment, part strength, post-processing options, and long-term durability. The three materials covered here — PLA, PETG, and ABS — represent the most widely stocked options at Polish hobby and wholesale suppliers, and account for the majority of desktop FDM print volume in the hobbyist segment.
Note that specific properties vary between manufacturers and even between colour variants from the same manufacturer due to differences in additive packages and pigment volume concentration.
Comparison at a Glance
| Property | PLA | PETG | ABS |
|---|---|---|---|
| Nozzle temperature | 190–220°C | 230–250°C | 230–260°C |
| Bed temperature | 20–60°C (often unheated) | 70–85°C | 100–110°C |
| Enclosure needed | No | Recommended for tall prints | Yes (strongly) |
| Cooling fan | Full speed | Partial (30–50%) | Minimal or off |
| Heat resistance (°C) | ~55–60°C (low) | ~75–80°C (moderate) | ~90–100°C (good) |
| Impact resistance | Brittle | Good | Good to very good |
| Moisture sensitivity | Moderate | High | Low to moderate |
| Print difficulty | Low | Low to medium | Medium to high |
| Odour during print | Mild (sweet) | Low to moderate | Strong (ventilation needed) |
PLA (Polylactic Acid)
PLA is a biopolymer derived from plant starch, most commonly maize or sugarcane. It is the default starting material for most desktop FDM printers and is widely considered the easiest material to print reliably.
Strengths
- Prints well without an enclosure on most printer designs
- Low warping tendency on glass, PEI, or adhesive-coated build surfaces
- Available in the widest colour and specialty variant range from Polish suppliers
- Compatible with essentially all FDM printer hotend configurations
Limitations
- Low heat deflection temperature makes it unsuitable for parts exposed to temperatures above ~55°C (including direct sunlight in summer)
- Brittle failure mode: parts crack rather than deforming under sudden impact
- Degrades outdoors over time through UV exposure and moisture absorption
Storage in Poland
Poland's average relative humidity ranges from roughly 75–85% in autumn and winter and somewhat lower in summer months. PLA absorbs moisture moderately, which causes surface roughness and popping sounds during extrusion. Storage in sealed containers with silica gel desiccant is recommended for spools not in active use.
PETG (Polyethylene Terephthalate Glycol)
PETG is a modified form of the PET plastic used in food-grade bottles. The glycol modification reduces crystallinity, improving printability compared to unmodified PET. It has become a popular intermediate-level material for functional parts.
Strengths
- Notably tougher than PLA — resists impact through deformation rather than cracking
- Better heat resistance than PLA; suitable for moderate-temperature applications
- Often described as food-contact safe when printed without a brass nozzle (stainless steel is preferred)
- Chemically resistant to many common solvents
Limitations
- High moisture sensitivity: wet PETG produces stringing, bubbles, and weak layer bonds. Drying is frequently required in Polish winter conditions.
- Bonds strongly to smooth glass and polished PEI surfaces; can damage build plate if not managed with a separating agent
- Slightly more prone to stringing than PLA at equivalent retraction settings
Drying Protocol
If stringing or surface bubbling is observed, dry the spool at 65°C for 4–6 hours in a food dehydrator or filament dryer before printing. Standard kitchen ovens are difficult to hold at this temperature accurately and risk degrading the spool.
ABS (Acrylonitrile Butadiene Styrene)
ABS is an engineering thermoplastic that has been used in injection moulding for decades. In FDM it offers good heat resistance and impact strength but requires a controlled print environment and proper ventilation.
Strengths
- Higher heat deflection temperature than PLA or PETG — suitable for parts near heat sources or in direct sun
- Can be post-processed with acetone vapour smoothing to produce near-injection-moulded surface quality
- Accepts solvent-based adhesives and paints well
- Relatively easy to machine, drill, and tap after printing
Limitations
- Requires a heated enclosure to prevent layer delamination and corner warping, particularly for parts larger than roughly 100 mm
- Emits styrene and other volatile organic compounds during printing — ventilation or air filtration is necessary
- Higher print temperatures require all-metal hotends for sustained use
Enclosure Requirements in Polish Climates
In heated Polish interiors during winter, ambient temperatures of 20–22°C are common. ABS prints typically require enclosure ambient temperatures of 40–50°C to reduce thermal gradients across tall parts. DIY enclosures built from acrylic panels are a common solution among Polish makers working with budget printer platforms.
Supplier Notes for Poland
Filament brands stocked at major Polish e-commerce platforms (including Allegro and dedicated 3D printing shops) include Fiberlogy, Devil Design, Spectrum Filaments, and Rosa3D — all of which are Polish manufacturers or have distribution operations in Poland. These brands generally compete on quality and price with German and Czech alternatives. Ordering from domestic suppliers reduces shipping costs and avoids VAT complexity for private buyers.