A Practical Filament Buying Guide for Singapore-Based Makers
Filament is the raw material of FDM 3D printing. It comes on spools, typically in 1.75 mm diameter, and feeds into the printer's heated extruder where it melts and is deposited layer by layer. The type of filament you choose determines the mechanical properties, surface finish, printability, and safety profile of the finished object.
Singapore has a growing number of local filament suppliers. Ordering locally means shorter delivery times, no import duties (Singapore has no GST on low-value imports under SGD 400 as of 2023 policy updates, though this may change), and the ability to inspect stock and get advice in person at physical showrooms.
PLA (Polylactic Acid): The Default Starter Material
PLA is a bioplastic made from fermented plant starch, most commonly corn. It prints at 190 to 220 degrees Celsius with a heated bed temperature of around 50 to 60 degrees. It produces minimal odour, often described as a faint sweet or warm sugar smell, and is considered non-toxic in its extruded form.
Standard PLA costs between SGD 18 and SGD 28 per kilogram from Singapore-based shops. PLA+ (or PLA Pro) blends add impact modifiers for improved toughness, priced closer to SGD 22 to SGD 32. Silk PLA variants create a glossy, metallic sheen and are popular for decorative prints.
PLA has a low glass transition temperature (around 55 to 60 degrees Celsius), which means it softens in hot environments. In Singapore, leaving a PLA print inside a parked car on a sunny day is enough to warp it. For parts exposed to heat, PETG or ABS is a better choice.
PETG (Polyethylene Terephthalate Glycol-Modified)
PETG is a step up from PLA in terms of durability. It prints at 220 to 250 degrees Celsius and offers better impact resistance, slight flexibility, and improved chemical resistance. It is the material most commonly used for functional enclosures, brackets, and items that need to withstand some mechanical stress.
In Singapore, PETG filament sells for roughly SGD 22 to SGD 38 per kilogram. It does not warp as easily as ABS, but it is more prone to stringing (thin threads of material between printed sections), which requires tuning retraction settings in the slicer software.
ABS (Acrylonitrile Butadiene Styrene)
ABS was the dominant 3D printing filament before PLA gained popularity. It is strong, heat-resistant (glass transition around 100 degrees Celsius), and can be smoothed with acetone vapour for a polished finish. However, it warps significantly during printing, requires an enclosed and heated build chamber, and releases VOCs that are an irritant to the eyes and respiratory system.
ABS is best reserved for experienced users who have an enclosed printer and adequate ventilation. In a typical Singapore HDB flat without a dedicated workshop, ABS is difficult to print comfortably.
Pricing is similar to PETG: SGD 22 to SGD 36 per kilogram locally.
Specialty Filaments
TPU (Thermoplastic Polyurethane)
TPU is a flexible filament used for phone cases, gaskets, and vibration dampeners. It requires a direct-drive extruder (Bowden-tube setups struggle with flexible materials) and slow print speeds of 20 to 30 mm/s. Local pricing ranges from SGD 25 to SGD 40 per kilogram.
Nylon (Polyamide)
Nylon is strong, abrasion-resistant, and slightly flexible. It absorbs moisture rapidly, which degrades print quality, making storage discipline critical in Singapore's high-humidity climate. Nylon filament typically costs SGD 45 to SGD 70 per kilogram locally.
Carbon Fibre Composites
Carbon-fibre-filled filaments (usually PLA-CF or PETG-CF) add short carbon fibres to a base polymer. They are stiffer and lighter than the unfilled version but are abrasive and will wear out a standard brass nozzle quickly. A hardened steel or ruby-tipped nozzle is required. Prices range from SGD 40 to SGD 65 per kilogram.
Where to Buy Filament in Singapore
| Retailer | Focus | Notes |
|---|---|---|
| Build It Full | FDM filaments, Bambu Lab machines | Wide PLA/PETG/silk selection; ships within Singapore in 2–3 business days |
| Makersuite | Resin, FDM printers, filaments | Carries Phrozen resin and FLSUN printers; competitive pricing on PLA+ |
| Shopee / Lazada | Everything | Third-party sellers; check reviews and seller ratings; some ship from overseas |
| 3D Maker SG (Facebook group) | Community buy/sell | Used spools, partial rolls, secondhand machines |
Physical showrooms are limited but exist. Build It Full, for instance, has a showroom where filament colours can be seen before purchase. For speciality materials like nylon or carbon-fibre composites, ordering from overseas (e.g., eSun, Polymaker) via their official Shopee stores is often the most cost-effective route.
Storage in Singapore's Climate
Singapore's average relative humidity hovers around 80 to 90 per cent. Hygroscopic filaments (nylon, PETG, TPU, and even PLA to a lesser extent) absorb moisture from the air, leading to bubbling, poor layer adhesion, stringing, and a rough surface finish during printing.
Practical storage options:
- Vacuum-sealed bags with silica gel: the simplest and cheapest approach. Resealable vacuum bags cost a few dollars, and 500 g of reusable indicating silica gel runs about SGD 8 to SGD 12.
- Filament dry boxes: repurposed airtight food containers (Ikea's SAMLA or similar) with a hole drilled for the filament to feed out during printing. Add a hygrometer inside to monitor humidity.
- Filament dryers: devices like the SUNLU FilaDryer S2 (available locally for SGD 50 to SGD 70) actively heat the spool at 40 to 55 degrees Celsius to drive out absorbed moisture before printing. Useful as a recovery step if filament has been left exposed.
Even PLA benefits from storage discipline. A spool left out for a few weeks in Singapore air will noticeably degrade in print quality, particularly in the form of tiny pops and bubbles during extrusion.
Checking Filament Quality
Signs of poor-quality or wet filament include:
- Audible crackling or popping during extrusion
- Excessive stringing between printed features
- Rough, bubbly surface on the first few layers
- Inconsistent diameter (measure with digital callipers; good filament varies by no more than +/- 0.02 mm from 1.75 mm)
Reputable brands like Bambu Lab, Polymaker, eSun, and Hatchbox maintain tight tolerances. Unbranded or extremely cheap spools (under SGD 15/kg) are a gamble on consistency.