The world's #1 spring design software
A real-time 3D studio for fifteen spring families, from compression coils to wave, belleville and free-form wire parts. Drag to reshape, chat with an AI copilot that speaks spring engineering, watch stress and fatigue live, solve straight to your target loads, or run the part on a virtual CNC machine. Every number in the open, in your language, currency and units.
Download Springs3d Studio
Free desktop app. Also runs in your browser — no install needed.
Version 1.0 beta · iOS/iPadOS 14+, Windows 10+, macOS 11+, Ubuntu 22.04+
The complete spring-design toolkit
Nine ways Springs3d makes designing faster, and safer.
Drag to design. See it instantly.
Real-time 3D editor
Grab handles on the spring and reshape it directly — geometry rebuilds live, with zero lag.
- Direct drag handles for diameter, pitch, coils, legs and hooks
- Per-coil freeform editing: set pitch and diameter coil by coil for progressive-rate springs
- Instant, lag-free geometry — no rebuild step
- Type-exact input, full undo / redo, dark or light theme
Design by conversation. Verified by the engine.
AI design copilot
Describe what you need in plain language, attach a drawing or CAD file, and the copilot proposes changes the calc engine verifies before they touch your spring.
- Plain-language design chat with attachments: drawings, photos and CAD files
- Every proposal re-verified by the real calc engine, applied as one undoable step
- Answers illustrated with live engine charts: load-deflection, stress and fatigue
- Ask the machine: Q&A grounded in the machine's spec sheet and your current design
Load it. See where it breaks.
Stress & fatigue simulation
Apply load and watch stress colors, deflection and safe limits — plus cyclic fatigue life with a Goodman margin.
- Live stress heat-map with deflection, wind and bend animation
- Safe, solid and cyclic operating-limit rings on the 3D model
- Cyclic fatigue life (modified Goodman) between two load points
- Tolerance-aware fatigue: the whole manufacturing tolerance box plotted on the Goodman chart
State the target. Get the spring.
Inverse design
Enter the loads and travel you need, even two operating points at once, and the studio solves the geometry and material for you.
- Design from a target load, rate or deflection
- Two-point solve: give load one and load two at their heights and get a spring that hits both
- Solves diameter, wire, coils and material together
- Lands on a manufacturable, standards-checked starting point
The best spring, not just a valid one.
Optimizer & design reuse
Set goals and limits and the optimizer sweeps thousands of candidates; the reuse search finds springs you already make that fit.
- Goal-driven optimizer: minimize mass, cost or stress within your constraints
- Every candidate validated by the full engineering engine, not a shortcut formula
- Design-reuse search: find an existing spring in your library that meets the new requirement
- Add your own engineering rules and the studio enforces them on every design
One studio, every spring.
Fifteen spring families
Compression to torsion, conical to wave, belleville, constant force, garter and free-form wire parts: fifteen families, each simulated in 3D.
- Compression, extension, torsion, double torsion, conical, barrel and hourglass
- New: wave, belleville, constant force and garter, alongside flat spiral (clock) and leaf
- Round or rectangular wire sections, plus free-form wire parts
Every number, in the open.
Standards-based engineering
Spring rate, index, Wahl factor, natural frequency and EN 15800 tolerance grades — shown, not hidden.
- Live rate, index, Wahl correction, solid height and surge frequency
- Safe load / deflection / torque / angle limits
- Allowable-stress matrix across material grades, with live utilization per grade
- EN 15800 / EN 13906 tolerance grades, in standard or precision class
Global by default.
Your language, currency & units
Work in Portuguese, English or Italian, price in R$, € or US$, and design in metric or imperial.
- Interface in Portuguese, English and Italian
- Cost reference in R$, € or US$
- Metric or imperial units, everywhere
Any bent-wire part. Programmed like the machine makes it.
Wire forms & CNC former
Design clips, hooks, rings and brake springs as a feed-bend-coil program — then watch a camless wire former run it.
- Feed / bend / coil segment editor with starter shapes and 3D joint handles
- Camless wire-former digital twin — program-driven tool arms, live pendant, cycle & rate
- Instant quote, datasheet, forming program and QC plan for every wire form
Fifteen spring families, one studio
Switch type without leaving your design.
Start designing in seconds
Open it in your browser now, or install the desktop app for offline work.