Apex-like knife sharpener.

NB! You have to rotate models to print it properly by yourself..

UPDATED 07.07.2016: Replaced 2pcs Wear-Resisting SF-1 Self Lubricating Bearing Bushing with 1 LM8UU bearing. Y-axis part changed

To make that thing you need to buy:

• 1pcs Ikea immeln hook, and put out metal part (hook itself). It has great suction cups to grip the desk. 
• 1pcs 8mm L200mm + 1pcs 8mm L500mm smooth rods. Such as in 3d printers. Length can some vary 
• 1pcs ~30-50mm length spring with inned dia 8-10mm. I didn't buy that, because I took it from my old Apex clone from aliexpress
• 1pcs LM8UU bearing
• 2pcs F624ZZ flanged bearings (4mm x 13mm x 5mm) 
• 2pcs F608ZZ flanged bearings (8mm x 22mm x 7mm) 
• ~10pcs N52 12mm X 2mm Super Strong Round Disc Magnets Rare Earth Neodymium magnet 
• 3pcs M5x30-50 bolts and nuts
• 1pcs M4x30 screw and nut
• 2pcs M3x15 Hex socket screws
• 5pcs M3x20 Hex socket screws
• 5pcs M3 nuts
• 2pcs M3 self-locking nuts

Also you need to buy Sharpening Stones from Apex, like this  In a future I plan to make stones by myself, using printed blanks, glass and sandpaper.