When all the data have been entered, you can quickly create a small-scale functional model from paper to get an idea of the future sundial. To do this, select Print the Diagram in the File menu and make separate printouts of:
o The diagram of the sundial without the shadow-caster
o The shadow-caster element alone
Use the same format for both (Calcad can use from half a sheet to 4 sheets to place side by side).
Cut out the shadow-caster, keeping a strip of paper at its base. To make it more rigid, you could stick it to a piece of card. Bend this strip at 90° and glue it on the sundial print.
Use 4 pieces of adhesive tape to fix the whole on the plane of the future sundial, aligning the edges of the sheet with the axes and ... wait for the sun!