Material Comparison Tool

What These Material Properties Actually Mean

Tensile strength matters most once a print does actual work — a phone stand or a decorative vase can get by on almost any material, but a bracket, hook, or hinge that bears load benefits from a material rated higher than the stress it'll see. It's not the only strength number that matters in the real world (impact resistance and layer adhesion play a role too), but it's the most commonly published figure and a reasonable first filter when comparing options. Print difficulty is really a forecast of how much troubleshooting stands between you and a finished part: an "Easy" material tolerates an imperfect bed level and a drafty room, while an "Advanced" one punishes both, often with warping, poor layer adhesion, or stringing if conditions aren't right. Print and bed temperature ranges matter for a more basic reason — printer compatibility. A material that needs a 250°C hotend or a 100°C bed simply won't print well (or at all) on a machine that tops out lower, so checking your printer's specs against these ranges before buying a spool saves a wasted purchase. Density matters in a quieter way: it's what converts a spool's weight into how much material you're actually getting, and it's why cost per kilogram alone doesn't tell the whole story between two materials of different densities. None of these numbers exist in isolation — they're trade-offs against each other, which is exactly what this tool is for: comparing them side by side instead of researching each material separately.

How to Use This Tool

Check the boxes for 2-4 materials you want to compare — PLA and PETG are selected by default as the most common beginner-to-intermediate comparison. The table (or, on mobile, a stacked card per material) updates instantly as you check and uncheck boxes, showing density, tensile strength, print difficulty, print and bed temperature ranges, approximate cost per kilogram, and what each material is best suited for. Use it to narrow down a shortlist before buying filament, or to sanity-check whether your printer and skill level match what a material actually demands.

Which Material Should You Use?

A quick decision flow, roughly in order of how common each need is:

1. Just prototyping or making a display piece? Start with PLA — easiest to print, lowest cost, no enclosure or special bed needed.
2. Needs to survive outdoors or heat? Reach for ABS (or ASA, its more UV-stable cousin) — both handle sun and warm cars far better than PLA, at the cost of needing better ventilation and bed adhesion.
3. Needs to bend or absorb impact? TPU is the flexible, rubber-like option — expect a slower, fussier print than rigid materials.
4. Needs maximum mechanical strength? Nylon leads on high-strength mechanical parts like gears and load-bearing brackets, but demands the most from your printer and print prep.
5. Somewhere in between — a functional part that doesn't need Nylon's strength? PETG covers general functional parts needing more flexibility or durability than PLA, at a moderate difficulty step up.

This flow is a starting point, not a strict rule — plenty of parts sit between categories, and it's common to have more than one workable material for a given job. When in doubt, select two or three candidates in the comparison table above and weigh the trade-offs directly instead of committing to the first material that fits.

Common Mistakes When Choosing a Material

• Picking PLA for outdoor parts. PLA softens at temperatures a sunny windowsill or car dashboard reaches easily, and degrades faster under UV than ABS or ASA.
• Ignoring Nylon's humidity sensitivity. Nylon absorbs moisture from the air, which causes stringing, bubbling, and weaker prints if it isn't dried before use — budget for a dry box or dryer if you print it often.
• Assuming higher print difficulty means a better material. Difficulty reflects how forgiving a material is, not how good the end part is — PLA is easy and still perfectly good for plenty of use cases.
• Choosing by cost per kilogram alone. A cheaper spool that warps, fails, or breaks under load costs more in wasted prints than a pricier one that works the first time.
• Overlooking bed and print temperature limits. A material that needs a hotter bed or nozzle than your printer supports won't print reliably no matter how carefully you dial in other settings.

Frequently Asked Questions

Picked a material? Use the Filament Usage Estimator to work out how much you'll need, or the Print Cost Calculator to see what the print will actually cost.