Joints & Furniture
Joinery & Furniture Engineering
For furniture makers and cabinetmakers. Joint geometry, fastener capacity and wood movement — the maths that decides whether a joint closes tight or shows a gap by the last corner.
Sag & Deflection Calculator
Shelf and beam deflection under load
Golden Ratio Designer
Harmonious furniture proportions with phi
Expansion Gap Calculator
Wood movement gaps for panels and tops
Screw Spacing Calculator
Edge, end and row distances per EC5 and IS 883
Screw Strength Calculator
Withdrawal and shear capacity by screw
Dovetail Generator
Pin and tail layout for any board
Box Joint Calculator
Even finger-joint spacing
Mortise & Tenon Calculator
Proportioned mortise and tenon sizing
Ring Segment Calculator
Segments for stave and ring builds
Compound Miter Solver
Angles for compound mitre joints
Drawer Reveal Calculator
Even gaps around drawer fronts
