Home Made Circular Slide Rule in CD Case
Been wanting to have a Circular Slide Rule for some time - also wanting to make one for fun (and ideas)
Saw some good ideas at www.sliderulemuseum.com and decided to procrastinate a bit tonight.
Printed scales in full size sticky paper I use for labels
Cut them out with an x-acto knife
Fixed scale was stuck right to the CD case. Moving scale was stuck to card stock (file divider).
Managed to "somehow" misalign them and created a new center using more sticky paper on the back.
Cursor made from clear top piece from a stack of blank DVD's. Scribed a line with the knife (aligned across the scales for correct angle) and packed the scribe with Blue Crayon.
Very much a fun project!
Home Made Circular Slide Rule in CD Case
Been wanting to have a Circular Slide Rule for some time - also wanting to make one for fun (and ideas)
Saw some good ideas at www.sliderulemuseum.com and decided to procrastinate a bit tonight.
Printed scales in full size sticky paper I use for labels
Cut them out with an x-acto knife
Fixed scale was stuck right to the CD case. Moving scale was stuck to card stock (file divider).
Managed to "somehow" misalign them and created a new center using more sticky paper on the back.
Cursor made from clear top piece from a stack of blank DVD's. Scribed a line with the knife (aligned across the scales for correct angle) and packed the scribe with Blue Crayon.
Very much a fun project!