{"id":624,"date":"2022-11-30T11:01:22","date_gmt":"2022-11-30T10:01:22","guid":{"rendered":"http:\/\/mandoline2023.de\/?p=624"},"modified":"2023-05-30T16:20:27","modified_gmt":"2023-05-30T14:20:27","slug":"franz-birner","status":"publish","type":"post","link":"https:\/\/mandoline2023.de\/?p=624","title":{"rendered":"Franz Birner"},"content":{"rendered":"\t\t
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Franz Birner<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Er ist der einzige Mandolinenbauer, der CAD\/CAM (Computergesteuerte Fr\u00e4sung) einsetzt. Franz Birner war Teamleiter f\u00fcr Musterbau, also pr\u00e4destiniert f\u00fcr technische Verfahren. \u201eIch hatte meine erste Mandoline gebaut, da kam mein Cousin mit einer Mandoline, die in den USA gebaut wurde. Bei meiner Mandoline bliebt der Ton drinnen h\u00e4ngen \u2013 bei ihm kam er heraus. Wahnsinn!\u201c So etwas wollte er auch bauen und kaufte sich eine CNC Maschine. Mit Inlays begann das Abenteuer 0,6er Fr\u00e4ser, 1,5mm tief.<\/p>

Nebenher \u00fcbt er: Anhand der Restaurierung eines Kontrabasses! Auch arbeitete er sich in die Schellackpolitur ein.\u201eDa muss man aufpassen, dass nicht die Schwei\u00dftropfen auf die frische Politur tropfen\u2026!\u201c<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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Er verarbeitet Ahorn, Vogelaugenahorn, Muschelahorn, Sitkafichte, Rotfichte \u00a0und Perlholz \u2013 die Decke immer aus Fichte. Auch zwei Geigen fertigte er. \u201eAls alle Mandolinenund Geigen fertig waren, hatte ich nichts mehr zu tun. Also habe ich zuersteine E-Gitarre und dann zwei weitere gebaut.\u201c<\/p>

Seine Scrolls (die \u201eLocken\u201c bei der Flachmandoline) arbeitet er nicht hohl. Wenn er ein neues Vorhaben plant, dann fotografiert er den passenden Gegenstand (z.B. die Bodenplatte einer Mandoline) und gibt sie in den Rechner ein. Dieser erstellt eine 3D-Zeichnung und arbeitet die Fr\u00e4s-Routine ab. Dabei m\u00fcssen die Spindel und der Schrittmotor gek\u00fchlt werden: Die Wasserk\u00fchlung daf\u00fcr hat Birner selbst gebaut.<\/p>

Schwierig ist der Hals einer Mandoline zu fr\u00e4sen: \u201eIch habe Monate gebraucht, um herauszufinden, was das CAM System von mir will, damit ich das bekomme, was ich brauche!\u201c.<\/p>

Thilo Fitzner<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Der einzige Mandolinenbauer, der computergesteuerte Fr\u00e4sung einsetzt. 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