Kossel Mini (K800) J-head retainer and fan duct

Use the printed J-head retainer to replace original Aluminium U-shaped retainer. This retainer support two fans, one for cooling throat pipe? the other for cooling printed models.

Note : These are designed for Kossel 800. Please check the position of holes and the height of the duct if your printer is not Kossel 800.

Update?fan duct revised. wider mouth to reduce wind reflection.