Filament comparisons are usually settled with adjectives. Ours was settled with a printer and a shelf of identical models. On 9 September 2026 the ANTINSKY team published a real-world test putting ANTINSKY PLA+ directly against Bambu Lab filament, printing the same geometry on the same machine and letting the finished parts speak. This article unpacks what that kind of test can and cannot tell you, and how to run the same audit on your own spool collection.
Why a side-by-side test beats a spec sheet
A datasheet gives you tensile strength, a melting range and a recommended nozzle temperature. All of it is true, and almost none of it predicts what happens on your bed. What actually decides the outcome of a print is a chain of small behaviours: how evenly the diameter runs, how the melt flows under fast retraction, how the first layer grabs a textured plate, and how the finished surface catches light.
A side-by-side test collapses that chain into something you can see. Same model, same slicer profile, same nozzle, same ambient conditions. Any difference in the output is a difference in the material or in the way that material wants to be printed.
The four things worth measuring
- Dimensional consistency. Print a calibration cube and a clearance test. Measure the walls with calipers. Filament that runs a consistent diameter produces consistent walls.
- Surface quality. Look at top surfaces under raking light. Rough, matte patches usually mean moisture or too much heat, not a bad spool.
- Layer adhesion. Snap a test bar. If it shatters along layer lines rather than deforming, your temperature or flow is off.
- Detail retention. Print fine lettering and sharp corners. This is where an inconsistent melt shows up first.
| Test | What it reveals | Typical fix if it fails |
|---|---|---|
| Calibration cube | Dimensional accuracy, wall consistency | Recalibrate flow, check e-steps |
| Clearance test | Real-world fit for moving parts | Adjust horizontal expansion in slicer |
| Snap bar | Layer bonding strength | Raise nozzle temp 5-10°C |
| Fine text plate | Detail retention, oozing | Tune retraction, dry the spool |
What PLA+ is actually for
PLA+ is a modified polylactic acid: same easy printing behaviour as standard PLA, with additives that improve impact resistance and layer adhesion. It is the right default for the majority of work — brackets, enclosures, display models, jigs, classroom parts. It prints at moderate temperatures, smells mild, and does not demand an enclosure.
Where PLA+ stops is where heat and sustained load begin. Under a hot car dashboard, or carrying a structural load for months, you want a different material. Choosing correctly is a bigger performance lever than choosing a brand.
Matching material to job
- Indoor functional parts: ANTINSKY PLA+ Filament 1.75mm 1kg for general work.
- Fast drafts and prototypes: ANTINSKY PLA+ High Speed Filament keeps flow stable at higher volumetric rates.
- Outdoor or warm environments: ANTINSKY ASA-CF for UV and heat resistance.
- Chemical exposure: ANTINSKY PETG is the usual middle ground.
- Flexible parts: ANTINSKY TPU 95A for grips, feet and dampers.
Running your own spool audit
Do not trust a verdict you cannot reproduce. Set aside one afternoon, pick two spools, and print the same four test objects back to back with a single slicer profile. Label every part with the spool it came from and the date. Keep a simple log.
Within a few cycles you will know which spools in your stock are interchangeable and which need their own profile. That knowledge is worth more than any review, because it is calibrated to your machine, your room and your habits.
A five-line spool log
- Spool ID and material
- Date opened
- Storage method since opening
- Profile used (temp, speed, flow)
- Verdict on the last three prints
The point is not bureaucracy. It is being able to say, months later, why one spool prints beautifully and another one strings, without guessing.
The conclusion the parts already told us
Good filament does not announce itself. It simply does what it says: consistent diameter, predictable melt, repeatable results. When you compare spools honestly, the differences stop being about marketing and start being about repeatability. That is the only benchmark that matters when a customer is waiting on a finished part. Keep your stock dry, keep your profiles documented, and reorder the spools that earned their place — all of which are ready to ship from innostation3d.com.