stratmaster458 Wrote:
-------------------------------------------------------
>
> The coordinate change for the origin was correct,
> I forget yet again that delta's think in polar
> coordinates and that the origin is the center not
> the corner of the build plate. I'm not sure on the
> G code commands but my ini was created using
> Johan's example, strangely his does not include
> the coordinate fix with the -100 offsets.
-100 offsets are fixed in slicer using options:
bed_size = 200,200
print_center = 0,0
From these two it is clear the ranges are [-100 ,+100].
If your slicer options do contain
gcode_arcs = 0
then slicer will not generate G3 and G4 commands .... and I do not have an idea why your head would crash to your bed.
>
> Weirdly the positive and
> negative directions for the x and why axis are
> inverted relative to the buttons on the
> pronterface gui, the left X moves the printer to
> the right same goes for the Y, the Z translation
> works as desired and the homing routine completes
> without issue.
Interesting, if homing works well then you have correct directions on the towers 1,2, and 3. One can invert the direction of X axe by swaping connectors for motors on tower 1 and 2 (by connecting motor on tower 1 to connector for tower 2, and motor on tower 2 to connector on tower 1). But I do not know how one could invert direction of Y axe.
> Despite the hotend being up to temp
> (185C) the extruder can't seem to push the PLA
> through the hotend. I was told by makergear (after
> I received my kit and assembled) that bowden cable
> extrusion with a 0.25mm nozzle would be very
> difficult and problematic, the neglected to state
> why any ideas? SHould I try extruding at 200C
> instead? SHould I get a new nozzle? What is the
> smallest I can use with a bowden system?
Check whether you can push filament by hand through the nozzle when it is hot (at 185°C). Disconnect bowden from the hotend and just try to push a piece of filament thorugh it. It should go easily. If it does not go then your nozzle is clogged. If it goes easily your temperature is ok as it is.
Check whether the extruder pushes filament when hotend is not connected to the bowden.
Check whether your termistor is reading tempereture correctly.
The smaller nozzle the harder it is to push filament and the bigger slack will happen in the bowden. This will require quicker and bigger filament retrace to prevent oozing. And maybe you will not be able to prevent it at all. To mitigate bowden issues you can:
* use tigheter bowden for you filament: e.g. 1.8 mm (instead of 2 mm) internal diameter for 1.75 mm filament
* use shorter bowden (if possible)
* bigger (and quicker) retrace and slower print speed.
I do not know what is the smallest usable nozzle with a bowden system. I know some use 0.35 mm and it works well enough.
-------------------------------------------------------
>
> The coordinate change for the origin was correct,
> I forget yet again that delta's think in polar
> coordinates and that the origin is the center not
> the corner of the build plate. I'm not sure on the
> G code commands but my ini was created using
> Johan's example, strangely his does not include
> the coordinate fix with the -100 offsets.
-100 offsets are fixed in slicer using options:
bed_size = 200,200
print_center = 0,0
From these two it is clear the ranges are [-100 ,+100].
If your slicer options do contain
gcode_arcs = 0
then slicer will not generate G3 and G4 commands .... and I do not have an idea why your head would crash to your bed.
>
> Weirdly the positive and
> negative directions for the x and why axis are
> inverted relative to the buttons on the
> pronterface gui, the left X moves the printer to
> the right same goes for the Y, the Z translation
> works as desired and the homing routine completes
> without issue.
Interesting, if homing works well then you have correct directions on the towers 1,2, and 3. One can invert the direction of X axe by swaping connectors for motors on tower 1 and 2 (by connecting motor on tower 1 to connector for tower 2, and motor on tower 2 to connector on tower 1). But I do not know how one could invert direction of Y axe.
> Despite the hotend being up to temp
> (185C) the extruder can't seem to push the PLA
> through the hotend. I was told by makergear (after
> I received my kit and assembled) that bowden cable
> extrusion with a 0.25mm nozzle would be very
> difficult and problematic, the neglected to state
> why any ideas? SHould I try extruding at 200C
> instead? SHould I get a new nozzle? What is the
> smallest I can use with a bowden system?
Check whether you can push filament by hand through the nozzle when it is hot (at 185°C). Disconnect bowden from the hotend and just try to push a piece of filament thorugh it. It should go easily. If it does not go then your nozzle is clogged. If it goes easily your temperature is ok as it is.
Check whether the extruder pushes filament when hotend is not connected to the bowden.
Check whether your termistor is reading tempereture correctly.
The smaller nozzle the harder it is to push filament and the bigger slack will happen in the bowden. This will require quicker and bigger filament retrace to prevent oozing. And maybe you will not be able to prevent it at all. To mitigate bowden issues you can:
* use tigheter bowden for you filament: e.g. 1.8 mm (instead of 2 mm) internal diameter for 1.75 mm filament
* use shorter bowden (if possible)
* bigger (and quicker) retrace and slower print speed.
I do not know what is the smallest usable nozzle with a bowden system. I know some use 0.35 mm and it works well enough.