Close-up photos of a mast building jig, showing basic wire setup, adhesive application and an example finished mast. Note that there are positioning slots for the "lower yard" that allow attachment of a second yard of the same diameter further below it (an uncommon configuration but still occasionally employed).
For more information, visit the Mast Jig FAQ.
All 3D printed models are sold in their original unprimered finish. Thorough washing in liquid detergent is recommended before use.