Free insole tools and print guides
Scale an insole STL, check its fit, or find the guide you need.
Prepare your STL
Scale an existing insole STL and prepare your next print.
STL Scale & Cut
Resize, widen and trim an insole STL, or split a paired model into individual insoles.
Open toolTPU hardness selector
Choose an activity to explore a suggested TPU firmness, lattice density and top-cover option. A starting point, not medical advice.
Open toolHeel inset
Taper the lower heel inward by 0–3 mm while keeping the upper surface, then export the STL.
Open toolMeasure & Fit
Measure a foot or compare foot and insole geometry.
Guides
Step-by-step instructions for designing, checking and printing.
Design your first pair
Follow the route from a first guided design to review, export and a first print.
Read guidePrint your insoles in 4 steps
Download, slice, print, and finish your Ergono3D custom insole STL in four concise, visual steps.
Read guideTPU print settings & fixes
Review slicer settings, common printing problems and top-cover finishing tips.
Read guideDetailed DIY print guide
How to make 3D printed insoles at home: capture fit inputs, generate an adjustable STL, slice for TPU, print on an FDM printer, then finish and wear-test.
Read guide3D Foot Fit walkthrough
Learn how to import, confirm and compare models in the foot-fit workbench.
Read guideExamples
See how a real use case shapes an insole design.
Travel insoles for long walking days
A Chiang Mai elephant trek in tired trainers became the brief for a prototype pair of travel insoles.
View example