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leonardo-aguiar

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About leonardo-aguiar

  • Birthday 10/02/1980

Personal Information

  • Field of Work
    Education
    (Product) design
    Fashion
    Engineering
    R&D / Exploration
  • Country
    BR
  • 3D printer
    Ultimaker 2
  • On The Web

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  1. leonardo-aguiar

    Led failure

    Thank you for the info geert_2. Do you suggest any LEDs strips available for sale that should work better / last longer with the Ultimaker2?
  2. leonardo-aguiar

    Led failure

    Hi guys, I have an UM2 and its LEDs haven't been turning on for a while now. I finally took them off and would like some help if possible. I have checked the board and when it's on the pins for the LEDs are giving 24V. I pulled up its report and this is the info it gave me: Machine on for: 2588:20 Printing: 2174:48 Mat: 3854m What do the first two mean? Is the format hours:minutes? Attached are some pictures of the LEDs, One of the wires leading from one strip to another has its insulation stripped off some how. I'm not sure if this is the issue because I checked the strips continuity and all segments are fine. I did this by scraping the glue off of the back side of the strips where there are visible electrical contacts. I checked with a multimeter. Even where the LED's contacts are really brown (in one picture) there still is a working connection there. As for the brownish aspect of the LEDs, I think this might be a sign that they have gone bad. Does anyone know what this might be? Thanks for the help.
  3. leonardo-aguiar

    Printing speed

    Thanks for helping gr5. I upgraded my UM2 with the e3D Titan extruder and hotend. My goal is to optimize print time depending on quality. 0.8mm nozzle x 0.4mm layers x 100mm/s speed = 32mm^3/s That's way above the 10mm^3/s throughput you talked about for the 0.4mm nozzle. Is there a way to calculate the max throughput for different nozzle sizes? It's finally good to know that the UM2 black feeder should be kept around 5lbs. I think I might have been printing too fast for many of my prints. Too many failures made me buy the e3D upgrade.
  4. leonardo-aguiar

    Printing speed

    Shouldn't it say "a bit below my recommended"?
  5. leonardo-aguiar

    Printing speed

    I'm planning on testing speeds for my printer so I did the table in the above post. Is it safe to say that since the throughputs are low when printing with lower layer heights, then I can increase the speeds drastically?
  6. leonardo-aguiar

    Printing speed

    Nozzle Diameter (mm) Layer Height (mm) Print Speed (mm/min) Print Speed (mm/sec) Throughput (mm^3/sec) 0.40 0.05 1000.00 16.67 0.33 2000.00 33.33 0.67 3000.00 50.00 1.00 4000.00 66.67 1.33 5000.00 83.33 1.67 0.10 1000.00 16.67 0.67 2000.00 33.33 1.33 3000.00 50.00 2.00 4000.00 66.67 2.67 5000.00 83.33 3.33 0.15 1000.00 16.67 1.00 2000.00 33.33 2.00 3000.00 50.00 3.00 4000.00 66.67 4.00 5000.00 83.33 5.00 0.20 1000.00 16.67 1.33 2000.00 33.33 2.67 3000.00 50.00 4.00 4000.00 66.67 5.33 5000.00 83.33 6.67 0.25 1000.00 16.67 1.67 2000.00 33.33 3.33 3000.00 50.00 5.00 4000.00 66.67 6.67 5000.00 83.33 8.33 0.30 1000.00 16.67 2.00 2000.00 33.33 4.00 3000.00 50.00 6.00 4000.00 66.67 8.00 5000.00 83.33 10.00
  7. leonardo-aguiar

    Printing speed

    0.4 x 0.2 x 50 = 4 no?
  8. Hi gr5, Now that you mentioned it, I noticed that the nozzle is visibly further to the right in comparison with the original UM2 hot end. I'm guessing I need to adjust Cura for this? I don't know how. Do you? Thanks
  9. OK. Thanks. Started this topic: I checked the machine settings. The width and depth were set to 230 x 230. Reduced it to 205x205 now. Will check if the problem persists. Thanks again.
  10. Hi community, I've upgraded my UM2's extruder and hot end to the e3D titan kit. For some reason my prints are showing up centralized in Cura (15.04.6) but on the print bed they are off to the right and for one print all the models were yellow in Cura but then during the print I got an error message that the printer tried to print outside of the print area. Any tips for what might be the cause of this? Thanks
  11. So just to confirm. Dirty SD contacts can cause the printer to incorrectly position the head and go outside of the print area. Right? If the SD contacts have been checked and the issue persists, where would you begin trouble shooting? Just some background info. I upgraded my UM2 to have an e3D titan extruder and hot end. Now my sliced gcode looks centralized in Cura but my prints are way off to the right side on the print bed.
  12. Hi guys, I had a print where one of the corners of the print bed had underextrusion issues. Images are at the flickr link below. Underextrusion issue Has this ever happened to anyone? Does someone know what could be the cause of this? Thanks. Best regards. Leo
  13. leonardo-aguiar

    UM2: Nozzle not heating up anymore

    Hi Sebastian, Were you able to remove the broken heater cartridge out of the heater block? If so how? I have this same problem. I think the heater cartridge fused with the heater block due to a tight fit and a long print. A while ago I had some heater blocks locally made. I was surprised that the technical drawing of the heater block (provided at the Ultimaker GitHub repo) did not specifiy the diameter of the hole for the heater cartridge. Attached is the technical drawing of the heater block. Does anyone know what this diameter should be? Since the heater cartridge has a 4mm diameter should the heater block hole for it have a 4.1mm diameter? Or should it be greater still? How much does the heater cartridge expand when it is heated? How much does the heater block hole expand when heated? Thanks for helping guys. Best regards. Leo
  14. leonardo-aguiar

    UM2 Nozzle deteriorating and desintegrating

    This has just happened to me. After a week of printing with glow in the dark filament (not colorfabb) I switched filaments to another ABS. I was getting a lot of under extrusion so I decided to take the nozzle apart. The glow in the dark filament had already caused various clogs so I figured I had another one. I printed maybe around 70 hrs with it. I ended up using a full 1kg spool. I uploaded a picture of my nozzle to Flickr. The damage on the sides is from when I was holding on to it with plyers while I cleaned the insides with a pick in an acetone bath. The filament would gunk up and latch on to the inner walls. It would take a good 40min of jabbing at it to make the burnt filament snap off. I was running it at 230ºC, well within the 220-260ºC range specified on the packaging. Here's the link to the photo: If glow in the dark filament can do this to brass what can air born nano particles of it do to our lungs? Does anyone know where I can get a replacement in São Paulo, Brazil?
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