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http://reprap.org/wiki/Laser_Cutter
Skipping g-code? - 12 years ago
I just printed for the first time on my new build and, all things considered, it went much better than I expected. The issue seems to be skipped (or bad) g-code. I'm printing a calibration angle thingy and it starts off very well and works fine until it gets about 1/4 through and then is messes up. Sorry I don't have pics (I was excited my printer actually printed something recognizable), butby sheck626 - Reprappers
Re: Z-Stepper Skipping - 12 years ago
I haven't had any problems yet with my new build. Then again I haven't actually printed anything yet, just tested the motions, calibrated, set endstop positions, etc. I do have a pretty good understanding of electronics though. Assuming the stepper drivers use a constant current source the best way to wire the steppers would be in series since the current would be equalized for both steppers (by sheck626 - Reprappers
Re: Z axis issues - 12 years ago
It's actually part of the same problem -- your steps per mm are way out of calibration. I had the same problem when I was setting up the machine I just built (marlin firmware). In the firmware, one of the options is mm per minute so if the steps/mm are way off, then the movement speed will be way off as well since it thinks a millimeter is much less rotation than it actually is. Calibrate theby sheck626 - Reprappers
Re: Z-Stepper Skipping - 12 years ago
I'm a new reprapper, so take this with a grain of salt but... The nut holders on the x-ends that the lead screws go through are sometimes not perfectly matched with the M8 nuts thus allowing a small amount of play when the lead screw changes directions. If that's the case, then you can correct it by wrapping the nuts in one or more layers of electrical tape before putting them in the holders.by sheck626 - Reprappers
Re: Pronterface won't move negatively or return home - 12 years ago
Are you sure you didn't wire the switches to the max endstop pins by mistake? Also, check the switches with a multimeter. You should read low resistance when the switch is NOT being pressed and open circuit when the switch is pressed. If the switch is not changing state when you press it the following problems are likely: 1) Switch wired wrong or faulty (check with multimeter at the end that cby sheck626 - Reprappers
Mixshop Wade's extruder kit.? - 12 years ago
First off, I am a new reprapper and I'm working on my own machine (the hard way). I got the "complete wade's extruder kit" from mixshop.com and I have a question about the hotend. I'm no mechanical engineer, but even I can tell that when you add heat and pressure to a metal-to-plastic connection with no additional support, you're gonna have a bad time. There is nothing holding the brass barrelby sheck626 - Reprappers