drag = orbit · middle/right-drag = pan · wheel = zoom
click a panel to identify it · Ctrl+Z / Ctrl+Y
Balsa density is the loose number here — a "3 mm sheet" ranges 0.08–0.20 g/cm³ depending on the batch, so pick the grade you actually bought. Every component's own share is on its header in the left column.
Blank user clears stored credentials. Base64 in localStorage — obfuscation, not encryption.