Test print designer, a test built for exactly what you need to check
A Benchy is a reasonable general health check, but it does not isolate any one variable and it does not answer a specific question. Pick what you actually need to verify, fit tolerance, bridging, overhangs or dimensional accuracy, set a range and a step for it, and get a compact model that changes one thing at a time across that range, so printing and measuring it gives you a real answer instead of a general impression.
Open the test print designer Pro plan, 15 EUR/month. The interface is in English.How it works
Three steps: pick what to test, set the range, print and measure.
Pick what to test
Choose the question you actually need answered: fit tolerance between two mating parts, the longest bridge your settings can span, the steepest overhang before quality drops, or how closely a printed dimension matches the model.
Configure the test
Set the range and the step size for your case, the clearance values to try for a fit test, or the angle range for an overhang test, so the printed model changes only that one variable across a controlled series.
Print and measure
Print the compact test model, small compared to a full Benchy, and measure the result at each step. The point at which the test starts failing, or the value that fits, is your answer, not a guess extrapolated from an unrelated model.
One variable, a controlled range
Every test changes a single thing across a range you choose, so the result is a measurement, not an impression.
Built to isolate one variable, the way an engineer would test it
A Benchy tells you a printer is roughly healthy. It cannot tell you whether a 0.2 millimetre clearance will actually fit, because it never tested that clearance.
The test is generated for your question
Instead of one fixed geometry meant to represent printing in general, the model generated here is shaped by what you picked to test. A fit tolerance test looks nothing like an overhang test, because they are answering different questions and need different geometry to do it.
One variable changes, the rest hold still
The engineering habit behind the tool is simple: change one thing across a controlled range and hold everything else constant, so a difference in the printed result can be traced to that one variable. A Benchy changes nothing in a controlled way, so a rough patch on it does not tell you which setting caused it.
Small models, fast answers
A compact test model uses a fraction of the filament and time a full calibration object like a Benchy needs, because it only needs to contain the one feature being tested, repeated across the chosen range, rather than an entire figurine's worth of unrelated geometry.
Guidance on reading the result, beyond printing it
Each test type comes with an explanation of what to look for once it is printed, where the fit stops being tight, where the bridge starts to sag, where the overhang surface turns rough, so the measurement step has a clear standard to measure against rather than a personal judgement call.
Frequently asked questions
How is this better than just printing a Benchy?
A Benchy is a reasonable general health check, but it does not isolate a variable and was never built to answer a specific question. A custom test changes one thing, a clearance, an angle, a bridge length, across a controlled range, and gives you a measurable answer for that one thing, which a Benchy's fixed, all-purpose geometry cannot do.
What kinds of tests can I generate?
Fit tolerance between two mating parts, bridging distance, overhang angle and dimensional accuracy are the named categories, each covering a calibration question with a measurable result once printed.
Is this only useful for advanced users?
No. Every test comes with guidance on how to read the printed result, so a beginner gets a usable answer without needing to already know what a good or bad result looks like. A more advanced user gets the same structured, controlled range but can push it further or interpret finer detail in the result.
How does this relate to AutoTowers?
The two tools cover different ground. AutoTowers builds a tower that changes a slicer setting, temperature, retraction, speed, acceleration or K-factor, by height in a single print. Test Print Designer instead covers geometry and dimensional questions, fit, bridges, overhangs and accuracy, which are about the model and the printer's mechanical behaviour rather than a single slicer setting.
Why are the models kept small and compact?
Because the question being asked only needs the one feature under test, repeated across the chosen range, not an entire figure's worth of unrelated geometry. A compact model answers the same question as a larger one while using a fraction of the filament and the print time.
How much does it cost to use?
Test Print Designer is part of the Pro plan (15 EUR/month), the same plan that opens the rest of the paid EduFacturing tool set.
Other tools
Part of the EduFacturing tool set for 3D printing.
The rest of the tool set
This tool is part of the Pro plan (15 EUR/month), which also opens print diagnostics, cost calculation and the rest of the paid tool set.
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