Cross-Section Diagram

Annotated 2D profile with corrected bend angles. Original sketch labelled 120° — geometry confirms ~135° interior.

Corrected Bend Angles

Fold from flat~45°
Interior angle~135°
Exterior reflex~225°
Original sketch showed 120° — corrected to 135° based on geometry calculation

Profile Dimensions

Top opening22.2"
Main span28.0"
Bottom flat11.5"
Overall height27.5"
Top vertical2.5"
Upper transition4.0"
Main side18.0"
Lower-A2.0"
Shelf4.0"
Lower-B4.0"

V-Groove Spec

Bit angle45° included
Shank1/4"
Cut depth0.281"
Web remaining3/32" (0.094")