Z axis top brackets, of P3Steel, differ between v1.x/2.x and v4

Greenonline
  • Z axis top brackets, of P3Steel, differ between v1.x/2.x and v4 Greenonline

    I have been studying the differences between version 2.x and version 4 of the P3Steel frames - in particular the AC08 bracket at the top of the frame which secures the top of the smooth bars and threaded rods of the Z axis on both the left and right sides. Here is the laser cut parts, for version 1.x, showing the part labelled as AC08:

    Laser cut parts for P3Steel v1

    Version 1.x/2.x has the AC08 bracket with two holes, one for the threaded rod and one for the top of the smooth bar (from the lasercut image):

    P3Steel v2 Z axis top bracket

    However, in version 4, the corresponding top Z axis bracket only has one hole for the smooth bar and just an indentation for the bearing which holds the top of the threaded rod (from Twitter):

    P3Steel v4 Z axis top bracket

    Here is a close up of the diagram from the google docs repository, listed in the v4 section on the RepRap Wiki page for the P3Steel, which shows the bearing assembly just apparently "resting" against the indentation:

    Close up of P3Steel Z axis top bracket

    Here is the bracket shown with the bar and threaded rod (again, from google docs):

    P3Steel v4 z axis top bracket

    Does anyone know why the top of the threaded rod is not secured by a hole, as it was in version 1.x/2.x? It just does not look particularly well secured.

    Under the list of version 4 changes it is mentioned:

    The extruder no longer hits the Z axis top bracket

    Is this the reason why the change has been made?

Tags
prusa-i3 p3steel
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