Key Takeaways
- LIBERTAS is Renishaw’s new software layer for the RenAM 500 metal‑AM family, giving operators granular control of laser parameters.
- The Support‑Reduction Package can cut conventional support volume by 30‑45 %, shortening build time and lowering post‑processing effort.
- By modulating laser energy across complex geometries, LIBERTY enables down‑skin angles up to 70° (versus the typical 45° limit) while keeping distortion under 0.1 % of part size.
- Compatibility is limited to Renishaw’s RenAM 500Q/500M systems, which deliver up to 500 W laser power and a 250 × 250 × 300 mm build envelope.
Introduction: Why Software Matters in Metal AM
Metal additive manufacturing (AM) has long been constrained by the need for extensive support structures. These scaffolds serve three primary purposes:
- Thermal management – dissipating heat to avoid melt‑pool instability.
- Mechanical stability – preventing part warping during layer‑by‑layer solidification.
- Geometric feasibility – allowing over‑hangs and steep down‑skin angles.
While essential, supports consume extra powder, add 5‑15 % to build time, and generate labor‑intensive post‑processing. Renishaw’s LIBERTAS software tackles these pain points through advanced laser‑control algorithms embedded in the QuantAM build‑preparation suite.
What Is LIBERTAS?
Core Functionality
- Dynamic laser‑parameter mapping – users can assign distinct power, speed, and hatch spacing values to individual features or even individual scan lines.
- Real‑time thermal simulation – the software predicts melt‑pool temperature fields, allowing operators to pre‑empt hot‑spot formation.
- Support‑Reduction Package – an optional module that automatically redesigns support geometry, targeting a 30‑45 % reduction in support volume while preserving build stability.
Benefits for the RenAM 500 Series
| Feature | Traditional QuantAM | LIBERTAS‑Enabled QuantAM |
|---|---|---|
| Laser power control granularity | Fixed per‑job settings | Per‑feature & per‑scan line |
| Maximum down‑skin angle (no support) | 45° | 70° |
| Support material usage | 100 % of design‑generated supports | ↓ 30‑45 % |
| Build time impact (support removal) | +5‑15 % | ↓ 3‑8 % |
| Part distortion (average) | ≤0.15 % of dimension | ≤0.10 % of dimension |
How LIBERTAS Reduces Supports
- Thermal Gradient Shaping – By lowering laser power on over‑hangs and increasing it on adjacent bulk, the software evens out cooling rates, diminishing the need for thermal “sacrificial” supports.
- Adaptive Hatch Strategies – Variable hatch spacing (e.g., 0.12 mm to 0.25 mm) balances melt‑pool overlap, ensuring sufficient bonding without excessive heat input.
- Down‑Skin Angle Optimization – The algorithm evaluates each surface normal; if the predicted cooling rate stays within a safe window, it classifies the area as “support‑free.”
Real‑World Impact
A recent case study on a titanium aerospace bracket (volume 120 cm³) printed on a RenAM 500Q showed:
- Support volume fell from 15 cm³ to 8 cm³ (≈46 % reduction).
- Build time dropped from 6 h 12 min to 5 h 30 min.
- Post‑build support removal labor decreased by ≈2 h.
Compatibility and System Requirements
- Supported machines: RenAM 500Q (500 W, 250 × 250 × 300 mm) and RenAM 500M (500 W, 250 × 250 × 300 mm, optimized for Inconel and stainless steels).
- Required firmware: Version 2.4.1 or later.
- Operating system: Windows 10/11 (64‑bit) with at least 16 GB RAM and a dedicated GPU for thermal simulation.
Looking Ahead
Renishaw plans to extend LIBERTAS to its upcoming RenAM 800 platform (800 W laser, 300 × 300 × 350 mm build volume) by Q3 2027, promising even larger support‑reduction gains for high‑temperature alloys.
Bottom Line
Renishaw’s LIBERTAS software adds a decisive layer of intelligence to the RenAM 500 metal‑AM portfolio. By granting per‑feature laser control and integrating a sophisticated support‑reduction engine, it trims material waste, shortens build cycles, and pushes the envelope on over‑hang geometry—all while keeping distortion under tight tolerances. For manufacturers already invested in Renishaw’s ecosystem, LIBERTAS represents a cost‑effective upgrade that directly translates into higher productivity and cleaner part finishes.
