Frame Calc

Artwork / mirror size

Width (mm)

Height (mm)

Timber & settings

Moulding width (mm)

Rabbet overlap (mm)

Tolerance (mm)

Waste (%)

Results

Rabbet opening — matches artwork size + tolerance

Width

—

Height

—

Mitre cuts — long point (45°)

Piece	Qty	Short pt	Long pt
Top / bottom	×2	—	—
Left / right	×2	—	—

Outer frame dimensions

Outer width

—

Outer height

—

Timber to buy

Minimum

—

Buy (inc. waste)

—

ⓘ The rabbet opening matches your artwork size plus tolerance — the rabbet lip grips the edge from behind. Always cut from the long point.