DimSum 0.5.360
Released October 4, 2026.
See an assembly in section, to scale, and change it live. Swap the joist material, a thickness or the order, and the section and a test floor update at once.
The same news is on the website's What's new page.
What's new
- The Assembly Designer. Tools → Assembly shows a live, to-scale section through the joists, rim, subfloor and ceiling drywall, each layer dimensioned, with the total and the level line highlighted. Zoom, pan and fit.
- Change it as you watch. Swap a member's material (2x10 to 2x12 to I-joist to truss), its thickness, elevation or order, or switch it off. The section and a 24' × 14' test floor (joists, rim and sheets) update at once.
- Pick the level line. Choose which line is the level's elevation. By default it's the bottom of the joists.
- Ceiling drywall comes with the Joist Tool as a member below, switched off until you want it.
- Placed floors get their own section and settings in Properties.
Improved
- Members follow their base. The rim board follows the joist depth on its own.
More in Assemblies.
Fixed
- A memory problem that could crash DimSum on very large pages.
- CSV imports no longer drop the first row when the file has no group row.
- Edited tool copies always get a new version, so your jobs are offered the update.
Before you update
- Nothing to do: DimSum installs this update on its own.
