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Project:Cupcake-o-Matic: Difference between revisions
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→The Present
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However after all these modifications I must still get this printer working and am currently attempting to tune this configuration into a working printer. | However after all these modifications I must still get this printer working and am currently attempting to tune this configuration into a working printer. | ||
===The First Print=== | |||
I made my first semi-successful print today (10th September 2012), it was meant to be a 10mm cube but turned into a 10x7x6mm splodge. It would appear that the extruder is not biting into the filament and occasionally strips the filament. It also appears that I have the values for steps per millimeter incorrect for the Y and Z axes. | I made my first semi-successful print today (10th September 2012), it was meant to be a 10mm cube but turned into a 10x7x6mm splodge. It would appear that the extruder is not biting into the filament and occasionally strips the filament. It also appears that I have the values for steps per millimeter incorrect for the Y and Z axes. | ||
Further calibration is required. | Further calibration is required. | ||
===Further debugging=== | |||
? | |||
===The Here and Now=== | |||
I managed to get to the space twice this week (26&27/09/2012) and have managed a number of things. I've diagnosed the remaining problems down to the internal step counters in Sprinter and that the extruder is slipping. | |||
Because I don't have end stops I cannot tell the machine to move until it reached it's home position, and over time as I reset it, tweak and fiddle with it, the Cupcake CNC loses it's place. This manifests when I attempt to start a print and the Cupcake attempts to center itself but instead crashes a platform against the hard limits. The fix for this is to add the minimum end stops. The current feeling in the reprap community is to use micro switches as they are cheap and more precise than opto end stops however all the mountings on a Cupcake CNC are designed for opto end stops. I've not managed to attach these end stops and got it working well. Pressing the home button would move the X, Y and Z axes to their minimum positions accurately. It still requires the end stops to be fixed more securely, but it pretty much works. | |||
==The Future== | ==The Future== | ||
