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gregwar

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  1. gregwar

    A Cura based DXF generator from your STL

    I can also do a Qt+OpenGL based frontend The biggest problem with command line is dealing with parts orientation Actually, I've already did something similar in Plater (https://github.com/robotswar/plater)
  2. Hello, Recently I've been working on laser cutting machines, with a 3D background I like to design parts and do assemblies using softwares like OpenSCAD or Autodesk This is why I wrote Projekt, a software based on CuraEngine to get the slices of your part and export it as DXF: https://github.com/Rhoban/Projekt You can also use it to generate multiple gravures level, it will uses polygon differences with the previous layer Don't know wether there is already softwares that do this kind of thing I may create a gui for this some day (maybe this could be an output option for Cura). Hope this helps!
  3. gregwar

    Is UM2 PSU underdimensioned?

    Ok, but don't you think that 9.2a is short anyway?
  4. gregwar

    Is UM2 PSU underdimensioned?

    You mean that each motor is 2W or so? That sounds really low
  5. Hello, Let's do some simple sum: 1) The Hot bed is 3.3 Ohm at 24V, it's like 7.2A heating 2) The nozzle is like 24Ohm, let's say 1A heating 3) Steppers are configured to ~1.3A, there is 4 of them (XYZE) 4) (not even considering fans, leds and electronics) This reach a total of 7.2+1+1.3*4 = 13.4A, for a 9.2A PSU This is like, underdimensioned right?
  6. Hello, Is the feeder of the UM2+ available as an upgrade for the UM2?
  7. OK, And the solution is just re-heating the solder on the bed side?
  8. In this case it would just not heat, right? Why would it shut down? Moreover, is 3.3ohms right?
  9. Ok but, there is a lot of things working with AC that I feel safe with Think of your boiler, hairdrier (/hot gun), soldering irons which are almost like a nozzle or electric radiators which are almost like a heated bed... There is also hot glue gun, which is basically like an extruder, no expansive DC psu with this Don't think military US want all that to go <30V :-)
  10. The machine is approx 1.5 2 years old It worked before What else do you think it could be?
  11. Maybe this is a stupid question, but why getting a 250w DC power supply when a thyristor based device could use AC (with solid state relays?) to achieve this? I mean, 75% of the UM2 power goes to the bed and nozzle heating, right? And a 30$ low cost oven can reach 250°C and is like 1/3 the price of just the UM2 PSU
  12. Hello, It looks like my machine (Ultimaker2) shuts off when I tries to heat the bed, as in the following video: The oscilloscope is showing the input voltage which drops to 20V just before the printer restarts. When it is not connected, the machine doesn't shuts off, and I can clearly see the heater bed connectors going from 0 to 24V. Note that I can heat the nozzle without any issue. What can be the cause of this? Any Idea? I've also measured my hot bed resistor which is 3.3Ohms, is that normal? That would mean that 7A should be consumed by the bed to heat? It sounds a lot, knowing that the power supply is only 10A. Additional info: the power supply blue led light is lower when the problem happens, can be its fault? EDIT: I'm trying to print with cold bed, seems to works so far, I think the problem is the power supply I've ordered a 720W (24V/30A) PSU from eBay to try replacing it
  13. gregwar

    Replace drive gear screw?

    Indeed, my digital says M3x3, ebay got it
  14. Hello, The headless screw of the drive gear on my UM2 is damaged What should I buy? (What is the spec or recommended spare part?) Thanks
  15. What about the "1500mA" mod? (M907 E1500) Looks it improve the extrusion for me, but is it really a good thing to put in all prints?
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