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In an attempt to upgrade my Mendel to a MendelMax alike X axis (where the X belt is 90 degrees rotated like the Pruse belt path) I redesigned the X-ends to hold a 22mm trapezoid or ACME nut.
Aditionally, I added a tensioner system in order to be able to modify belt tension on the X axis without abusing the carriage attachment for that.
The goal is to use the original Mendel length of smooth rod. As such the block is a fair bit longer than some of the MendelMax designs I have seen; this allows the tensioner system to be placed on it as well.
Why not in OpenSCAD? Because prototyping and fitting things together is a breeze in SW - as soon as I work out the issues with this design I will put up a link to the design with an OpenSCAD version as well.
There are 2 versions of this design, one with nice curves and one with a square base block. The rounded version turned out to be impossible to print in one piece using ABS; splitting it into two halves did not help much.
The normal version is using a square base and has much material removed in an attempt to reduce warping and decrease print times.
Both designs most likely require a heated chamber and/or the use of PLA to print properly; as I only have ABS at the moment and only a heated bed I can not get this to print straight.
Words of Wisdom
I have posted this for inspiration and as a base for another iteration of this design. It should fit a Mendel (standard rod length) and MendelMax (assuming your rods are long enough).
The distance between the centers of the smooth rod and trapezoid spindle is 29mm, NOT 30mm like on the... errr... prusa?
Cyberwizzards Alternative X-end by Cyberwizzard is licensed under the Creative Commons - Attribution license.
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