Hello Everyone!
I just finished grad school and finally have time to get back to my Prusa i2 build. I have everything built and wired up and have been able to successfully print a 40mm test cube after calibration! I am now having some fine tuning issues I'm hoping to get help with.
1. When starting a print, the bed heats up and then all the axis home in this order x --> y --> z. The x and y axis home perfectly, hitting the endstop and retracting slightly. The z-axis hits the endstop and retracts more, I'm guessing because the hotend needs to heat up next. After the hotend heats up the z-axis moves back down but not enough completely throwing off the paper thin leveling I did prior to the build. My solution right now is to manually spin the z-axis threaded rod while it is printing the skirt until it is close to where it needs to be which doesn't always work out the right way.
2. The y-axis tends to get stuck slightly in the same spot. I double checked that the bed moves smoothly without the belt on, added a tensioner to the y-axis belt and adjusted the voltage on the driver. At one point I was able to print a 40mm test cube with no sticking, all sides were perfect, and thought I somehow fixed it but when I went to print a fan mount afterward I got a horrible print and noticed the sticking was back. The default acceleration is at 3000 and I read to lower it to 1000 or 1500. Could this be a solution? Maybe there is another solution to try?
I'll try to attach some pictures when I get home and maybe a youtube video of the movement issues.
By the way I'm using the newest version of Slic3r if that helps at all.
Thanks for the helpl!!!
I just finished grad school and finally have time to get back to my Prusa i2 build. I have everything built and wired up and have been able to successfully print a 40mm test cube after calibration! I am now having some fine tuning issues I'm hoping to get help with.
1. When starting a print, the bed heats up and then all the axis home in this order x --> y --> z. The x and y axis home perfectly, hitting the endstop and retracting slightly. The z-axis hits the endstop and retracts more, I'm guessing because the hotend needs to heat up next. After the hotend heats up the z-axis moves back down but not enough completely throwing off the paper thin leveling I did prior to the build. My solution right now is to manually spin the z-axis threaded rod while it is printing the skirt until it is close to where it needs to be which doesn't always work out the right way.
2. The y-axis tends to get stuck slightly in the same spot. I double checked that the bed moves smoothly without the belt on, added a tensioner to the y-axis belt and adjusted the voltage on the driver. At one point I was able to print a 40mm test cube with no sticking, all sides were perfect, and thought I somehow fixed it but when I went to print a fan mount afterward I got a horrible print and noticed the sticking was back. The default acceleration is at 3000 and I read to lower it to 1000 or 1500. Could this be a solution? Maybe there is another solution to try?
I'll try to attach some pictures when I get home and maybe a youtube video of the movement issues.
By the way I'm using the newest version of Slic3r if that helps at all.
Thanks for the helpl!!!