FDM vs Resin Printing Explained
FDM vs resin 3D printing compared head-to-head: detail, strength, materials, cost, mess and the best applications for each technology in Australia.
The two 3D printing technologies most Australians choose between are FDM (filament) and resin (SLA/MSLA). They produce very different parts from very different workflows. This guide compares them honestly so you can pick the right one — or know when to send a job to a maker who has both.
Quick comparison
FDM melts plastic filament and extrudes it layer by layer. Cheap per gram, robust functional parts, visible layer lines, easy workflow. Good for brackets, enclosures, replacement parts, prototypes, large pieces.
Resin cures liquid photopolymer with UV light. Stunning detail, smooth surfaces, brittle parts, messy workflow (gloves, IPA, UV cure). Good for miniatures, jewellery, dental, scale models, anything where surface finish matters more than mechanical strength.
Detail and surface finish
Resin wins decisively. Layer heights of 0.025–0.05 mm produce surfaces that look almost injection-moulded straight off the printer. Fine features — sword edges on a miniature, gem facets on a ring, tooth enamel on a dental model — come out crisp and recognisable.
FDM layer heights are typically 0.16–0.28 mm, and the layer lines are clearly visible. For functional parts this doesn't matter. For display pieces, FDM requires sanding, filler primer and paint to match resin's out-of-printer finish.
Strength and durability
FDM wins for most functional use. PETG, ASA and nylon prints flex before they break and survive plenty of impact, vibration and load. Annealed nylon and carbon-fibre composites approach injection-moulded performance.
Standard resin is brittle — drop a resin part on concrete and it shatters. Tough resin, ABS-like resin and engineering resins close the gap but still trail FDM for impact resistance. For a snap fit, hinge or load-bearing part, FDM is almost always the right call.
Materials available
FDM: PLA, PLA+, PETG, ABS, ASA, TPU (flexible), nylon (PA6, PA12), polycarbonate, PEEK, carbon-fibre and glass-fibre composites, wood-fill, metal-fill. Dozens of brands and hundreds of colours.
Resin: Standard, Tough, ABS-like, Water-washable, Flexible, High-temperature, Castable (for jewellery casting), Dental, Hearing-aid-shell, Engineering. Choice is smaller but covers specialised applications well.
Build volume and part size
FDM goes large. Hobby printers commonly have 200–300 mm cubic build volumes; industrial machines (Bambu X1E, Creality K2 Plus, Voron 2.4, custom CoreXY builds) go to 500–600 mm. Cosplay armour, full helmets, automotive panels and large brackets all fit on a single FDM print.
Resin is smaller. Most desktop resin printers are 150–200 mm in the largest dimension. For bigger resin parts you split the model and glue sections together — common practice for cosplay and prop work but adds finishing time.
Cost
Printer cost is similar at the entry level: ~$400 for a basic resin printer, ~$500 for a capable FDM. Above $1,000, FDM offers larger build volumes and faster speeds; resin tops out earlier for hobby machines.
Consumables favour FDM: PLA is ~$30/kg, standard resin is ~$50–$80/litre and a litre prints roughly the same volume as ~600 g of filament. Add IPA, gloves, FEP film replacement and resin disposal costs.
Workflow and mess
FDM is clean. Press print, wait, peel the part off the bed, done. Failed prints are inert plastic — you can throw them in the bin or recycle them.
Resin is messy and requires safety gear. You wear nitrile gloves and safety glasses, you wash the part in isopropyl alcohol after printing, you UV-cure it for full strength, you dispose of uncured resin as hazardous waste (don't pour it down the drain), and you work in a ventilated area because the fumes are unpleasant. None of this is hard but it's a real lifestyle difference from FDM.
When to choose FDM
Replacement parts. Brackets, mounts, enclosures, jigs and fixtures. Cosplay armour and large props. Prototypes that need to be handled, dropped or load-tested. Anything you'll use outdoors. Anything food-adjacent (PETG with proper finishing). Beginners. Anyone without a dedicated workshop space.
When to choose resin
Tabletop miniatures and figures. Jewellery prototypes and casting patterns. Dental models, aligners and surgical guides. Hearing aid shells. Architectural models. Anything where surface finish beats strength. Anyone willing to dedicate a workshop space and handle the messier workflow.
Why not both?
Many experienced makers — and most professional service bureaus — run both technologies. FDM for the bulk of jobs, resin for fine-detail work and miniatures. If you're outsourcing through Printit4Me you don't need to choose at all: post the job, describe what matters (strength vs detail vs cost vs deadline), and makers will quote with the right technology for your part.
FAQ
Can resin parts be used outdoors?
Standard resin yellows and becomes brittle in UV light within months. ASA-like or UV-stable resins handle outdoor use better, but FDM (ASA, ASA-CF) is generally a better outdoor choice.
Is resin printing safe at home?
Yes with the right precautions: gloves, glasses, ventilation, separate workspace from food prep. Liquid resin is a skin sensitiser — never handle it bare-handed.
Which is faster?
Resin prints an entire build plate in a fixed time regardless of how many parts are on it — so it's faster for batches of small parts. FDM is faster for single large parts.
Can I 3D print food-safe parts?
PETG with food-safe sealant works for occasional-use items. Resin is not food-safe. See our food-safe materials guide.
Ready to get something printed?
Post a job and Australian makers will quote you within hours.