Home > Blueprints & Parts > Thumb Piano - Blueprints and Parts Thumb Piano - Blueprints and Parts Thumb Piano Plans $20.00 Thumb Piano Complete Hardware $16.00 12 keys for Thumb Piano $6.00 Bulk steel prong material $1.00 Machine screw (#8 x 32) $0.20 Brass clamping tube - Thumb Piano $3.00 Brass bridge rod (5 in. long) - Thumb Piano $1.00 T-nuts (#8 x 32) $0.30 Tuning and playing instructions - Thumb Piano $1.00 Laminated Birch Top - Thumb Piano $5.00 Laminated back - Thumb Piano $5.00 Precut walnut bridge - Thumb Piano $5.00 Thumb Piano frame pieces (4) $16.00