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http://reprap.org/wiki/CoreXY
Re: CoreXY Binding: Mechanical or Firmware Issue? - 9 years ago
Thanks, I'll flash my printer with Repetier firmware and see if the problem goes away. If it is an issue with Marlin, do you know whether there's going to be a fix for it anytime soon?by AlexY - CoreXY Machines
CoreXY Binding: Mechanical or Firmware Issue? - 9 years ago
Lately I've been testing high speed printing with my CoreXY printer (running Marlin firmware), and have been running into an issue with movements faster than ~250mm/s. At higher speeds, when decelerating, the gantry seems to "stick" for a very short time, causing a jerk in the movement. Usually this only happens during travel moves (since my travel speeds are the highest) and causes no noticeableby AlexY - CoreXY Machines
Re: help me get this pattern out of my print! - 9 years ago
How rigid is your frame? It might also be caused by your frame wobbling, so try reducing your acceleration settings.by AlexY - Printing
Re: Minor print issue help. - 9 years ago
How fast are you printing? The sunk lines might be caused by your extruder not being able to keep up with the speed you're printing at.by AlexY - Printing
Re: Does the Hotend Make Much of a Difference - 9 years ago
There's also a bit of a middle ground for buying a hotend that blends affordability and reliability. My first printer, the QU-BD Two Up, came with an awful Ubis clone hotend; it could print perimeters fine but could not do bridging at all, meaning that the top surfaces were spotty and weak. On top of that, heat would creep up the barrel even with a cooling fan installed, eventually causing undereby AlexY - General
Re: Microcenter filament sale $14.95 - 9 years ago
My friend's been using Inland PLA for some time now on his Prusa i3 and is impressed by the quality. It does seem to have a bit of an ABS smell to it when printing, but at $15 for a kg, it's hard to beat.by AlexY - General
Re: Metal brackets for 1515 extrusion? - 9 years ago
Alright, I'll try that, thanks!by AlexY - Extruded Aluminum Frames
Re: Slight bends on corners and sides - 9 years ago
In your slicer options there should be a setting for a minimum layer time; you could try either increasing this value or lowering speeds. Also, have you tried switching filament to see if the problem is still there?by AlexY - Printing
Re: Skipping hobbed gear after x number of layers - 9 years ago
Sounds like heat is creeping up past the heat break in your hotend, causing the filament to jam before it enters the melt zone. Try attaching a fan to the heatsink area so that the top stays cool.by AlexY - Printing
Re: Slight bends on corners and sides - 9 years ago
How fast are you printing? It could be that the previous layer hasn't had enough time to cool, allowing it to be pushed around by the nozzle on the following layer.by AlexY - Printing
Re: nozzle catching on print ? - 9 years ago
Did you calibrate your extruder steps per mm? It's possible that the printer is overextruding, so that the extruder puts out extra plastic that hits the nozzle on the next layer.by AlexY - Printing
Re: Extruder Making Thudding Noise - 9 years ago
Does your extruder idler bearing turn freely? Is your stepper current adjusted correctly? Your extruder motor seems to be skipping, causing the thudding noises when the nozzle is lowered. Try pushing filament through the hotend manually with the nozzle in the air to see if there's significant resistance. This might be preventing the extruder from putting out plastic against the additional resistaby AlexY - Printing
Re: Metal brackets for 1515 extrusion? - 9 years ago
I use 90 degree brackets that fit inside the corner, similar to . The brackets are reasonably rigid right now but still allow for vibration when the printer is printing at high speeds.by AlexY - Extruded Aluminum Frames
Re: Help me make my objects warp! - 9 years ago
No problem—I also get occassional problems with warping, since I'm using an unheated bed with blue painter's tape. I'd be interested in solutions to this issue, so please post what you find! Also, I remember reading that when using painter's tape heating the bed actually lowers adhesion, though I've never tested that myself.by AlexY - Printing
Re: Help me make my objects warp! - 9 years ago
Here's one of the parts for a 3D printer I'm designing—so far it's been extremely prone to warping and also doesn't use that much plastic, so it would be a good piece to test with.by AlexY - Printing
Metal brackets for 1515 extrusion? - 9 years ago
Hi, I'm currently in the process of designing a CoreXY printer made out of Misumi 1515 extrusions. I've created a prototype that uses 3D-printed corner brackets, but frame rigidity still seems to be an issue. Misumi offers metal corner brackets for their 2020 extrusions, but I haven't seen anything similar for the 1515 size. Does anyone know whether these brackets are available for the smallerby AlexY - Extruded Aluminum Frames