If you’re diving into the world of 3D printing, you’ve probably come across the great debate: Resin vs Filament 3D Printing. Whether you’re a complete beginner or just looking to upgrade your setup, understanding the differences between resin and filament printing is key to choosing the best 3D printer type for your needs.

Let’s break it down in a friendly, jargon-free way to help you decide which 3D printing technology is right for your next project.

The Basics: What Is Filament and Resin 3D Printing?

Filament 3D Printing (FDM)

FDM (Fused Deposition Modelling) is the most popular form of 3D printing for beginners. It works by heating and extruding a plastic filament (usually PLA, ABS or PETG) through a nozzle to build your object layer by layer.

This method is often referred to as filament 3D printing, and it’s widely used for prototyping, mechanical parts, household items, and larger models. It’s affordable, relatively easy to use, and doesn’t require much post-processing.

Resin 3D Printing (SLA)

SLA (Stereolithography) or resin 3D printing uses a UV light to cure liquid resin into solid layers. Instead of plastic filament, you’re working with photopolymer resin that hardens with light exposure.

SLA 3D printing is known for its surface finish, precision, and ability to capture very fine detail. It’s a favourite for miniatures, jewellery, dental models, and anything where high accuracy is a must.

FDM vs SLA: What Are the Key Differences?

When comparing FDM vs SLA, the goal isn’t to pick a winner, but to understand which is better for your project. Here’s a closer look at the major differences:

1. Print Quality & Surface Finish

Resin printing wins when it comes to detail. You’ll get smoother surfaces and intricate features straight off the build plate.

FDM printing tends to show layer lines, especially with larger prints, but the quality is still decent for functional parts and rapid prototypes.

Summary: If detail and smoothness matter, go resin. If function and strength matter more, FDM’s your friend.

2. Print Speed: Resin vs Filament

FDM printers can be slow for detailed prints, but they’re usually quicker for larger or basic models.

SLA printers cure entire layers at once (especially with MSLA models), making them surprisingly fast for small, detailed work.

Summary: For small, complex prints, resin can be faster. For large, simple objects, FDM usually gets the job done quicker.

3. Ease of Use

Filament 3D printing is often considered easier to learn. There’s less mess and fewer post-processing steps.

Resin 3D printing requires handling chemicals, wearing gloves, cleaning with alcohol, and post-curing – not ideal for beginners or small home environments.

Summary: FDM is generally better for 3D printing for beginners. Resin is best if you’re ready to get hands-on with more advanced processes.

4. Cost of Resin vs Filament Printing

FDM printers are typically cheaper to buy and operate. Filaments are more affordable, and maintenance is straightforward.

SLA printers have come down in price, but resin, cleaning supplies, and wear-and-tear items like FEP film add to the cost.

Summary: For budget-conscious makers, filament is the more cost-effective option.

5. Materials & Durability

FDM printers can use a wide variety of materials – from flexible TPU to heat-resistant ABS.

Resin printing offers fewer options but specialised resins (e.g. tough, flexible, dental) are available for more advanced users.

Summary: FDM is great for functional parts and durable prints. Resin is excellent for fine detail, but brittleness can be an issue unless you use engineering-grade resins.

Pros and Cons at a Glance

Pros and Cons of Filament Printing (FDM)

Pros:

• Affordable to start and run
• Easy to learn
• Wide range of filament types
• Great for large or functional prints

Cons:

• Visible layer lines
• Less fine detail
• Limited smoothness without post-processing

Pros and Cons of Resin Printing (SLA)

Pros:

• Exceptional detail and surface finish
• Great for small, intricate designs
• Ideal for professional and artistic applications

Cons:

• Messy and requires post-processing
• Resin can be toxic – proper handling is essential
• More expensive to maintain

Which Is Better – Resin or Filament?

Here’s the thing: it depends on your goals.

Want to print strong, functional parts or larger models? Go with FDM 3D printing.

Need high-detail models, miniatures, or smooth surfaces? Opt for resin 3D printing.

The FDM vs SLA debate isn’t about choosing the “best” – it’s about choosing what’s best for you.

Local Note for South Africans

In South Africa, filament printers are generally easier to source and support locally, with a wide range of PLA and PETG filaments available at affordable prices. Resin printers are growing in popularity, especially for hobbyists and jewellery designers, but resin and accessories can be pricier and trickier to get.

If you’re starting out, FDM might be the more accessible route – both in terms of cost and community support. Many local 3D print shops (like ours) also offer both services, so you can try before you buy.

Final Thoughts: Choosing the Right Printer for Your Needs

When it comes to Resin vs Filament 3D Printing, the right choice depends on:

• Your experience level
• Your budget
• The type of projects you want to create

For many makers, having both FDM and resin printers opens up the full creative spectrum. But if you’re choosing just one, go with the technology that best matches your immediate goals.

Still unsure? Reach out to a local supplier or service provider for personalised advice. And if you’re ever in doubt – start with a small project, learn the ropes, and grow from there.

Interested in seeing the difference first-hand?
Visit our online store or chat with us about custom prints using both FDM and SLA 3D printing.