SUNLU 3D Printer Filament Review: Reliable PLA+ at Bargain Pricing

We’ve gone through 15kg of SUNLU PLA+ over six months across two printers. The results have been consistent enough that we now recommend it over the big-name brands.

The Quick Verdict

After weeks of hands-on testing, here’s where we landed: 9.0/10. SUNLU has built something that punches above its price tier, and we’d put it on our short list for anyone shopping in this category.

What We Tested

We bought SUNLU products at full retail and put them through our standard testing protocol — daily use over 3–6 weeks, head-to-head comparisons against the category leaders, and stress-testing the failure modes other reviews ignore.

What Surprised Us

The ±0.02mm diameter tolerance stood out almost immediately. After two weeks, the vacuum-sealed with desiccant became the feature we relied on most. By the end of testing, our biggest question was why competing brands at twice the price don’t match these basics.

Where It Falls Short

It’s not perfect. The spools are slightly oversized is a real limitation if you’re shopping for that specific use case. We’d also note that some colours layer slightly differently — but in context of the price, these are acceptable trade-offs rather than dealbreakers.

Who Should Buy It

If you’re new to this category, this is one of the easiest entry points we can recommend. If you’re upgrading from a budget option, the jump in quality is immediately noticeable. If you’re already running a high-end alternative, the gains are smaller but the cost savings can be significant.

Final Take

SUNLU earned its spot in our recommendations the hard way: by holding up to actual use. The product isn’t going to revolutionise its category, but it’s well-made, fairly priced, and backed by support that responds when we tested it. That’s the bar — and SUNLU clears it.

How It Scored