The tuning bellows is still the most commonly used tool for tuning all types of harmonica instruments. However, its use has several disadvantages: The tuning pressure, which influences the pitch, cannot be verified. As a result, tuning results vary from tuner to tuner. Working with the tuning bellows is tiring for the tuner and leads to back pain due to the stooped working posture.
 The tuning table shown in the blueprints is the result of many years of development and testing. In 1992, the German Patent Office granted patent DE 4142035 for it.
 Working at the tuning table allows the tuner to maintain a fatigue-free, seated working position. Tuning pressure can be controlled, working time is short, and tuning results are optimal. The tuning table has three working areas: the wind chest with interchangeable frame, the piccolo tuning attachment, and the key attachment. The reeds in the instrument are tuned on the interchangeable frame . The piccolo tuning attachment is used to tune the high, valveless reeds on the removed soundpost. The key attachment is used to tune the notes on the soundposts removed from the instrument. Setup time for each individual requirement is short. With the basic unit, the user already has a working aid with which they can tune all instruments (treble and bass). Regardless of whether a piano accordion, a button accordion, a bandoneon, or a harmonica needs to be tuned, using an interchangeable frame adapted to the instrument's size will always lead to the best tuning results. The piccolo tuning attachment and key attachments further simplify work. When tuning the attachments, the reeds are freely accessible, eliminating the laborious and time-consuming task of turning the instrument over to check and correct pitch. To achieve optimal tuning results that meet the highest standards, a final check should always be performed while the instrument is on the interchangeable frame. Experience has shown that only a few reeds require minor adjustments. The tuning table is not available as a finished unit. The construction folder contains all drawings, parts lists, construction specifications, and images for production. Individual modifications are easily implemented. The cost savings from DIY construction are considerable. The material costs and the costs for the construction plans are extremely low compared to the benefits of the tuning table.
 Construction plans for the construction of a tuning table for tuning all types of harmonica instruments. 56 pages of text with functional and construction descriptions, parts lists, and 22 illustrations, 19 of which are in color. 49 drawings in the appendix. DIN A4 format, ring-stitched, 2nd edition 2003 (1st edition 2000), reprint 2025. New version of the out-of-print construction folder "Tuning Table for Harmonica Instruments."