Pulley with bearings

thingiverse

The kids were eager to set up a pulley system across the garden, but the pulleys they bought from the shop turned out to be subpar and completely failed to function.\r\n\r\nI had some bearings in the drawer, so I got printing right away. The pulleys are currently holding up a 40m washing line strung across the garden, and they're ratcheted tight between trees, which allows them to withstand a significant amount of strain.\r\n\r\nEach pulley requires two 608 bearings, two washers, and an M8 nut and bolt. As you can see from the picture, I didn't bother cutting my M8 down, but it makes no difference at all.\r\n\r\nThe print time for a pair of pulleys is approximately 4 hours in total on my Prusa i3.\r\n\r\nOh, and I've provided both the STL and Sketchup files in case you want to make any modifications.\r\n\r\n**UPDATE**\r\nThe Sketchup file for the outer part of the pulley, when exported to an STL, gives erratic results during printing. However, I used the Netfabb online service to fix it, and after that, it printed perfectly fine.