Yeah so I tried everything you guys said but it didn't fix all the issues. The jerk settings helped, but the printer still shifts. It shifts less predicable now. Any help would be appreciated. Printing today @20mm/s (painfully slow) on all featuresby MatthewHall - CoreXY Machines
Thanks! Good point about it taking longer (I've already tweaked lots, back to it)by MatthewHall - CoreXY Machines
Thanks for showing me that! For the life of me I couldn't find anything about it earlier.by MatthewHall - Let's design something! (I've got an idea ...)
Quotethe_digital_dentist Jerk is the allowable speed for "instantaneous" direction change. When the extruder is coming into a corner, the speed is decelerating. It will decelerate to the "jerk" speed and then try to change direction without coming to a complete stop. It's relying on the springiness of the belt and the motor torque to slam the extruder carriage around the corner. That is whenby MatthewHall - CoreXY Machines
Quotethe_digital_dentist To the OP: if the belt is physically slipping it is not tight enough and the cure is obvious. It is far more likely that the motor is slipping due to a combo of excessively high acceleration/jerk/speed and/or too high or too low current. What are the settings you're using? Photos of the machine might help. Prot0typ1cal: 40 teeth is the recommended (by SDP/SI) minimumby MatthewHall - CoreXY Machines
So what if we made a machine that could print on a horizontal spinning barrel, e.g. the printer is to the CNC router as the additive lathe is to the lathe. This could possibly produce some very interesting parts (gears, turbines, threads) that would be difficult if not impossible to make with a Cartesian printer. I'm thinking about building a prototype machine so I can work on the initial softwarby MatthewHall - Let's design something! (I've got an idea ...)
So I built a printer and am trying to fix the remaining issues I have. I am surprised by the excellent quality of the printer - when it works. The only problem I still have is that the belt skips while doing diagonals, curves, or corners (sometimes). Basically the belt shifts whenever there is a fast speed change. The belts slip on the GT2 pulleys, the rest of the printer is rock solid. I attempby MatthewHall - CoreXY Machines
Also, please don't copy the entire config into your post. Look into github gists... work stunningly well for thisby MatthewHall - CoreXY Machines
QuoteDust If you plug in an endstop the wrong way it is very likely you have damaged the voltage regulator on the mega How would I fix this? I measured the voltage earlier and it was all OKby MatthewHall - CoreXY Machines
The green lights are on on the Arduino, but the green light on the Ramps is flickering constantly. I have reset and re-uploaded the firmware, but still getting the same results. Does anyone know what would cause the screen to flicker like this? The light on the RAMPS seem to flicker at the same frequency. I was having a few endstop short circuits recently (may be the problem). I have those chinsyby MatthewHall - CoreXY Machines
Fixed a few days ago. Turns out pronterface was blocking the port.by MatthewHall - CoreXY Machines
So I've had a pretty good time uploading firmware to the arduino so far but today when I was planning on changing the steps per mm on the extruder, I never got that far cause I could never upload. Here is the error arduino gave me: avrdude: stk500v2_ReceiveMessage(): timeout avrdude: ser_send(): write error: sorry no info avail avrdude: stk500_send(): failed to send command to serial port avrdudby MatthewHall - CoreXY Machines
I've been building a custom 3d printer, and have some issues that I can't seem to solve. The Full Graphic Controller says the hotend temperature is always around 173 C, and the card always says either "card inserted" or "card removed". Any help would be immensely appreciated.by MatthewHall - Firmware - Marlin
Hey everyone! So what are the drowbacks of moving a corexy assembly in the x, y, and z axis and not moving the print bed? This would allow for a heavier, higher quality heated bed.by MatthewHall - Mechanics
So.. recently I've been wondering to do now that my custom 3d printer is finished (mostly). I think I've found an idea - a laptop. Why? A few reasons, mostly because the hardware to do this in a decent form factor is now available and because no one has really done this successfully before. I'll first be 3d printing a case then milling on my high school's CNC machines and mills. I've explored boby MatthewHall - Let's design something! (I've got an idea ...)
That looks really solid. Nice Job! I avoided ABS as well for now. No heated bed for me.by MatthewHall - CoreXY Machines
Thanks everyone, but I solved this bug. On to the next!by MatthewHall - CoreXY Machines
What values should it display at room temperature? (I have a 100kohm thermistor)by MatthewHall - CoreXY Machines
So...thermistors. I just finished the last steps of calibrating my custom corexy 3d printer and then... I think the hotend thermistor is broken. When I turn the printer on the Full Graphic Smart Controller shows a min temp error. Any help would be greatly appreciated. Configuration.h is attached.by MatthewHall - Firmware - Marlin
So...thermistors. I just finished the last steps of calibrating my custom corexy 3d printer and then... I think the hotend thermistor is broken. When I turn the printer on the Full Graphic Smart Controller shows a min temp error. Any help would be greatly appreciated. Configuration.h is attached.by MatthewHall - CoreXY Machines
I'm sorry can you elaborate on this?by MatthewHall - CoreXY Machines
Hello everyone! I'm working on the final parts of my custom 3d printer, and I ran into an issue with the Z axis. I am able to home the z axis and fine tune it from the Full Graphic Controller, but the z axis does not move during prints. I have verified this by watching the lead screw and the software control as well. Any help will be greatly appreciated.by MatthewHall - CoreXY Machines
DigitalDentist that is actually quite a good cable chain design. It reminds me of the BQ Witbox and how it gets rid of than large plastic bubble on the Makerbot.by MatthewHall - CoreXY Machines
You know, maybe I'll try that when I finish my design I'm working on now. Being 16 and in school constricts my time a bit . I just ordered some OpenRail though to use for a rock solid cantelievered Z axis; last step on the CoreXY project!by MatthewHall - CoreXY Machines
That X axis is going to bend so much... Just saying CoreXY is far superior to everything else.by MatthewHall - Extruded Aluminum Frames
Probably. Right away I can see adding a non stationary motor to the X axis and moving that extruder in normal cartesian coordinates. Not what you asked, but is a neat idea.by MatthewHall - CoreXY Machines
Email me and we can do it. I've used the site and I think it could be good for other things also.by MatthewHall - Let's design something! (I've got an idea ...)
Yes you can use a Mendel hotend without a Mendel machine. Duh.by MatthewHall - Crowdfunding Projects Announcements
Demond, what is the design you used? Is it on thingiverse or something? I've been interested in the style of belts in z axis as is done on the smart rap coreby MatthewHall - CoreXY Machines