$4.95 two-part 'shop' aluminum extrusion straight edge with wooden strip in
preparation for epoxying to strips. Straightness of assembly gauged to a
stretched 38 gauge copper wire as a reference. Note jeweler's loup at
middle of table to QC the wire to straight edge fit.
Wooden stiffening strip epoxied to aluminum extrusions. Piano hinges and
other hardware shown. 'Ofla' brand cutting mat has been sectioned and
affixed to benchtop with double-sided tape.
Front view of completed 'micrometer' straight edge assembly.
End view of bench showing construction details. Note that the straight edge
itself folds up to allow placement of ribbon materials - hence the piano
hinges.
Straight edge in down position.
Straight edge in up position, showing ribbon material in place for cutting.
Detail view of adjustment mechanism.
Part 4a - The Ribbon Adjustors.
Part 4c - Plan 'A' ribbon cutter.
Acoustic Line Source Research - Table of Contents.
