Hi,
I am building a machine for a project of mine, applying layers of silica gel to a glass plate.
It's not really a 3d printer but as I need X, Y and Z movement as well as controlling the syringe, it use the same principle.
I choose an hbot configuration for it simplicity, see in attach the jpg and the openscad file (the openscad contain lots of other stuff but only the xy will be rendered for clarity).
My problem is that I have "play in movement": the X axis will rotate by a few degrees, see the arrows in the jpeg. It is only when the X movement change direction.
I don't need the same accuracy than a 3d printer and I can start working with the machine as is, but I like to understand what is happening.
My assumption is that it comes from the Y linear bearing.
The 90° angle between the axis is not perfect yet, I am waiting for the plate to put bellow that should do it.
From what I read on the forum, the part supporting the 608zz could also lead to rigidity problem as they are not strong enough.
I am a chemist and didn't study mechanic so advise could be more than helpful.
Cheers
Dimitri
I am building a machine for a project of mine, applying layers of silica gel to a glass plate.
It's not really a 3d printer but as I need X, Y and Z movement as well as controlling the syringe, it use the same principle.
I choose an hbot configuration for it simplicity, see in attach the jpg and the openscad file (the openscad contain lots of other stuff but only the xy will be rendered for clarity).
My problem is that I have "play in movement": the X axis will rotate by a few degrees, see the arrows in the jpeg. It is only when the X movement change direction.
I don't need the same accuracy than a 3d printer and I can start working with the machine as is, but I like to understand what is happening.
My assumption is that it comes from the Y linear bearing.
The 90° angle between the axis is not perfect yet, I am waiting for the plate to put bellow that should do it.
From what I read on the forum, the part supporting the 608zz could also lead to rigidity problem as they are not strong enough.
I am a chemist and didn't study mechanic so advise could be more than helpful.
Cheers
Dimitri