How to make Germany's most dangerous lung trainer


Jörg Sprave
Published on December 9th, 2018
A small donation would be super! Many thanks. PayPal: -------------------------- Shopping list: Inserts 6,2mm: Arrow tips: Tapping tool M9x1: 2“ Vanes: Steel tubes: 18x4mm (ID = 10mm) 12x1mm (ID = 10mm) 10x2,5mm (ID = 5mm) For the arrow tips: 12x3mm (ID = 6mm) Aluminum tube for arrow shaft:

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Jörg Sprave

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