RD8 Changelog
RD8 Software Changelog.

JuLY 08, 2026
Intermediate Calculations
You can now slide out a panel "Intermediate Calculations" to break down complex calculations into bite size-pieces. You can define new variables on the fly and use them in other calculations.

Interface archetypes shown in the 3D viewer
An "Ideal Interface Illustration Gizmo" now appears next to the coordinate gizmo. It represents an illustrations of the ideal constraint-set.
Improvements
- Smoother camera motion when viewing normals
- Shorter publish flow for input parameters, with fewer confirmation steps
- Reduced click for drafting parameters
- All parameters enter draft mode when changed
June 04, 2026
Parameter Edits from Parameter Database
Added step to preview impact of changing parameter values (like when publishing a draft from a calculation).

3D Viewer: View to Normal + Roll
Added “View normal” button to the cross section controls that aligns camera to the normal of the cross section plane.

Added possibility to roll model along the screen normal (Alt + right-click + drag)

Calculation formula checks and new math operators
Extended calculation formula error tooltip to show both expression (like unmatched parentheses) and evaluation (like division by zero) errors, highlighting where in the formula the problem is.

Added functions/mah operators nonneg, nonpos, and abs to calculation formula.
Furhter fixes:
- Numpad Enter now triggers save
- No longer possible to insert linebreaks that cause calculation to fail
- Decreased size of help tooltip
- Element now shown again in parameter suggestions
Interface Analysis
Added option to “ignore” a constraint, which removes the constraint from the detailed analysis without adding an unclarity

Renamed “negligible” constraint to “insufficient” to better convey its intent: constraints that are present in the geometry but insufficient to actually constrain in the real world
Improvements
Parameter List in Calculation Sheets
- Cp, Cc, Cpk columns now account for the current distribution (Monte Carlo)
- Enabled Cp, Cc, Cpk, Distribution columns for GPS parameters
- Removed short number from value tooltip
- Removed types “Diameter” and “Radius” (have been migrated to “Linear”)
General
- Custom table column widths are now remembered between visits
- Graph labels no longer overlap when they’re close together
- Unsaved layout no longer resets when resizing the graph
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