How to make Germany's most dangerous lung trainer

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Jörg Sprave
Published on December 9th, 2018
A small donation would be super! Many thanks. PayPal: jsprave@macrosystem.de -------------------------- Shopping list: Inserts 6,2mm: https://amzn.to/2QNcde4 Arrow tips: https://amzn.to/2B56WEI Tapping tool M9x1: https://amzn.to/2BZZP1T 2“ Vanes: https://amzn.to/2B2OfS7 Steel tubes: https://www.ebay.de/itm/Pr%C3%A4zisionsrohr-nahtlos-E235-L%C3%A4nge-500mm-Pr%C3%A4zrohr-%C3%988-50mm-H%C3%BClse-Blank/191848524463?ssPageName=STRK%3AMEBIDX%3AIT&var=490887695221&_trksid=p2057872.m2749.l2649 18x4mm (ID = 10mm) 12x1mm (ID = 10mm) 10x2,5mm (ID = 5mm) For the arrow tips: 12x3mm (ID = 6mm) Aluminum tube for arrow shaft: https://www.ebay.de/itm/Aluminium-Rohr-15-x-1-5-mm-AlMgSi0-5-Aluprofil-Alu-Rohre-Rundrohr-Modellbau/222172879807?ssPageName=STRK%3AMEBIDX%3AIT&var=521013550948&_trksid=p2057872.m2749.l2649


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