Magnetic ball joint for Rostock mini

• 6x6mm Magnets x12
  http://www.neomag.jp/neoexpress/shoppingcart/itemdetail.php?shape=1&cid=1&itemno=11111466000&qty=1

• 9mm Balls x12
  https://www.monotaro.com/p/4041/3861/

• LFKM8-UU x6
  http://www.linear-mrd.co.jp/fs/linearmrd/c/lfkm

• Carbon fiber tube x6 (166mm)
  OD6mm x ID4mm
  http://www.kkhobby.com/SHOP/FS001.html

more information see below (japanese).

http://arms22.blog91.fc2.com/blog-entry-546.html
http://arms22.blog91.fc2.com/blog-entry-547.html