The project is developed by TTN and Matt Kimball and is still in intensive development stage.
From project description:
Icepick Delta is a open source 3d printer that was inspired by the Firepick Delta. The project aim is to build a 3d printer with no linear rods or linear bearings. I wanted a delta 3d printer, but was put off by linear rail and rod prices.
When the project started, the Firepick Delta files had not been released yet (they're on github now). The icepick is based on the Firepick Delta, but designed from the ground up.
The repapiness of this design is very high, leading to a smaller number of parts required, in turn lowering cost.
The build height looks to be about 160mm at the moment at a diameter of 200mm. Currently, printing speeds and acceleration have to stay low to avoid backlash. Another option to be explored is braided fishing line.
At the moment, the firmware is functional, but when going outside a certain radius (reachable points), it will decide to home that particular arm. Upper arm homing angle firmware needs some work.
The target printable area will be at least the standard 200mm cube.
More information and filess related to this project are at: