The decision in one sentence: you buy Tough PLA solely for better layer cohesion and more springiness — because in every other row of the table, temperature resistance included, the two materials are identical.
One misunderstanding has grown up around the "PLA+" label, and it costs people printed parts: the belief that the plus means higher heat resistance. It does not. In the manufacturer Porima's official FDM table, PLA and Tough PLA carry the same value in that field — 60 °C. Setting twenty-one fields side by side shows there are exactly three differences. This is a rare case where an honest comparison consists mainly of pointing out how much does not change.
Comparison table
| Parameter | PLA | Tough PLA (PLA+) |
|---|---|---|
| Nozzle temperature | 200–230 °C | 210–240 °C |
| Bed temperature | 0–60 °C | 0–60 °C |
| Cooling | 100% | 100%, fan required |
| Drying | 2–4 h / 30–40 °C | 2–4 h / 30–40 °C |
| Chamber enclosure | open frame | open frame |
| Temperature resistance | 60 °C | 60 °C |
| Print difficulty | very easy | very easy |
| Warping | none | none |
| Stringing | low | low |
| Layer cohesion | good | very good |
| Impact resistance | high | high |
| Flexibility | low | high |
| Surface finishing | easy | easy |
| Solubility | difficult | very difficult |
| Support removal | easy | easy |
| Odour | none | low |
| Nozzle abrasiveness | none | none |
| Print speed | high | high |
| Colour saturation | high | high |
| Finish | smooth | smooth |
| Bambu AMS | compatible | compatible |
A highlighted cell marks the material that is clearly better in that row. Eighteen rows are identical and we do not invent an advantage there. Source: the official FDM technical data table from the manufacturer, Porima. Full data sets: PLA print parameters · print parameters for all materials.
When to choose PLA
Display models, figurines, architectural mock-ups. Nothing in the table gives Tough PLA an advantage here, and the lower nozzle limit of 200 °C lets you print cooler and cleaner on fine detail.
Visual prototypes you check and then throw away. The part is there to show a shape, not to carry a load. Paying for better layer cohesion makes no sense.
Prints made in a room where somebody is sitting. Odour "none" against "low" is the one row where plain PLA wins, and it happens to be about the person rather than the part.
Large, thick-walled decorative shapes. With that sort of geometry nothing works in bending, so the difference in flexibility is irrelevant.
Learning to print and calibrating the machine. The widest margin for error and the lowest temperatures in the whole catalogue.
When to choose Tough PLA
Clips, snap fits, sprung catches. Flexibility "high" against "low" means the part springs back into shape instead of breaking off on the third closing. That is the cleanest reason to pay more.
Brackets and supports carrying a load in the Z axis. Layer cohesion "very good" against "good" shows up exactly where plain PLA cracks — at the layer boundary, perpendicular to the print direction.
Housings for tools, cases and boxes that are going to be dropped. It is not about static strength but about a fall from a shelf not ending in a pile of fragments.
Mechanical parts in RC models and toys with moving parts. Gears, levers, arms — anything that works cyclically.
Thin-walled housings with snap fits. Plain PLA on a 1.2 mm wall cracks the first time the housing is opened; Tough PLA takes it.
What the table won't tell you
Both materials carry 60 °C in the temperature resistance field, and that is the most important piece of information on this page. Tough PLA is not a heat-resistant version of PLA. A Tough PLA part left in a parked car in summer will go limp exactly as a PLA one would. If your problem is temperature, no variant of PLA will solve it — you have to move to PETG, ABS or ASA. That single mistake accounts for most of the disappointment with "reinforced PLA".
60 °C is the manufacturer's label, not HDT. There is no standard or described test method behind it. It indicates a direction, not a guarantee that the shape will hold under load.
"Impact resistance: high" in both columns is not a measurement. Porima publishes neither an impact value nor a test method, so no numerical advantage can be read out of that field. The practical difference only appears in the layer cohesion and flexibility fields — and that is what the decision should rest on, not on a row that looks identical.
The "fan required" entry for Tough PLA is the one real change to your profile. Plain PLA will forgive weaker cooling; Tough PLA with a throttled fan starts losing the geometry of overhangs. If you print on a machine with a single weak side fan, that is the row that concerns you.
The ten degrees of difference in the nozzle range are worth checking with a temperature tower. A profile copied straight across from PLA will put Tough PLA at the bottom end of its range, where layer cohesion — the very thing you are paying for — is at its weakest. On average there is more to gain here than from changing material.
Where to check this further
Materials to buy: Porima PLA filament 1 kg and Porima Tough PLA filament 1 kg.
The difference between PLA and Tough PLA is subtle, so filament consistency weighs more in this decision than the name does. Porima filaments are produced to a ±0.03 mm diameter tolerance, and we publish the manufacturer's full official print data — you don't have to guess it. Our warehouse is near Poznań, in Swarzędz.
See Porima PLA filaments · Print temperature table · All 3D printing problems · Filament comparison