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eKoh

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  • Field of Work
    Engineering
  • Country
    MX
  • 3D printer
    Ultimaker 3 Extended Ultimaker 2+
  • On The Web
  1. Currently I am trying to bake a Nylon filament with 180ªF for 7 hours. The problem is how to keep it dry outside the oven or the drier. Quite interesting options! I've seen the first 2, but the last one it's very practical, I am going to try the last one. To see how it works!
  2. Hello UM community! I am experimenting with nylon and I am having troubles with the humidity that it absorbs. In my job, we have a closed room with 18 3d printers (UM2+, UM3 Ext) that is around 4mx2mx2.5m. With closed enclosures for each 2 printers. What I want to do is to find a way to keep the room with low humidity percentage. I read that people has experienced that around 25% humidity is fairly good, my current humidity must be around 50%. I am researching for a dehumidifier that decreases the humidity of my 3d printing room lower than 30%, because we are printing all the time, and we cannot always remove and dry the filaments all the time. I found this option so far: https://www.amazon.com/hOmeLabs-Dehumidifier-Dehumidifiers-Basements-Allergens/dp/B073VBWKJZ/ref=zg_bs_267557011_2?_encoding=UTF8&refRID=DZ718KNCJ707QVGCHMAZ&th=1 It goes as low as 35%, so I am asking you guys what would be a better option?
  3. I was printing in ABS and I got the following issue: s This made the printer unable to retract and also unable to print. This just happened after I reduced my Fan speed from 80% to 25% (this due to I am printing in ABS, and as it cools down quickly it also shrinks), I made several tests on a Build Plate Adhesion Torture Test, and I finally got that: Regular fan speed: 25% Maximum fan speed: 50% Had the best results. Never faced this issue before How can I solve this issue without changing the fan speed? [values] bottom_layers = 3 cool_fan_full_layer = 3 cool_fan_speed = 50 cool_fan_speed_max = 80 cool_fan_speed_min = 40 cool_lift_head = True cool_min_layer_time = 15 infill_pattern = lines infill_sparse_density = 10 retract_at_layer_change = True roofing_layer_count = 1 skirt_line_count = 2 top_layers = 2 travel_compensate_overlapping_walls_enabled = False wall_line_count = 2How can I solve it without increasing fan speed? Here are my specs: Ultimaker 2+ Nozzle = 0.8mm Bed temp = 80ºC (I tried from 80 to 105 and 80ºC had the best results) Print temp = 260ºC (From 230 to 260ºC the last one had the best results) [values] bottom_layers = 3 cool_fan_full_layer = 3 cool_fan_speed = 25 cool_fan_speed_max = 50 cool_fan_speed_min = 20 cool_lift_head = True cool_min_layer_time = 15 infill_pattern = lines infill_sparse_density = 10 retract_at_layer_change = True roofing_layer_count = 1 skirt_line_count = 2 top_layers = 2 travel_compensate_overlapping_walls_enabled = True wall_line_count = 2
  4. It worked :D! The only downside is that I can only use these APIs through the Hotspot technique (the no security credentials needed), the other way is to do it with credentials through ssh connection, but this is less practical than the APIs. Anyway, so I am making progress here, but what I need to do is to change the materials profile, I used the GET /materials API to get the materials my UM3 currently has, and saved it to a MaterialsFile.xml, and made a minor change, from 223 to 224 from all the temperatures available, just to check if it works: And when I try to post materials, I use "materials" as the name of the file (I also tried only materials without the "") and I get the following: "message": "profile not stored" "result": false And then I uploaded a signature_file from the Firmware downloads, and I get the following message: "message": "expected bytes with no null" I was wondering if the UM2 and the UM3 share the same source code (or atleast the messages errors) for these APIs, since the UM3 source code has not been released, and where are they located at? I wanted to see by myself the cause of these messages but I was unable to find the messages.
  5. Thank you for your reply gr5! I do change the printer filaments as the instructions say. The problem is for example, when I load TPU 95A material, the procedure is this: 1. Go to Material 1 > Load > TPU 95A. The print core heats up and after it is hot the material is loaded 2. UM3 says: "Confirm when the material is being extruded", and then I wait for that, but actually very little material is extruded, thus, the print core is not clean yet. 3. It "auto confirms" (sometimes) and the printer goes back as the material was correctly extruded but it actually still has some of the last material. What I had success with is to extrude it manually, by raising the temperature from the UM3 panel, and pushing the material from the feeder. So that's why I want to raise the temperature. I got updates about the APIs stuff, I tried the Hotspot connection (like for when you setup your WiFi connection) and some APIs works without the need of an id/key: But when I try to change the printer name I got this awful message: "message": "400 Bad request" So I can conclude that this is not an Authorization Issue, this is something else, but What could it be?
  6. Hello community! This is my first post and I am facing to a problem I have been trying to solve for 2 days from now. I need to manage the materials profiles from Ultimaker 3 machines, because we are having a problem with the default print core temperature for some materials, they are not being heated enough and when we load the material it (most of the times) takes too long to finally extrude and also, the print core is being covered by the material, and not extrude anymore. That's why I need to raise a bit the print core default temperature for some material, like TPU 95A. This was possible in Ultimaker 2+ machines, but on Ultimakers 3, I am not able to do so. I've tried by looking for different options in the machine with no success. I have also tried by turning on the "Developer Mode" and working with the APIs, I had success with the following APIs: POST /auth/request GET /auth/check/{id} GET/auth/verify But by adding manually the --digest --user id:password, I've got no success with the following request: POST /materials PUT /system/name Which is what I believe the post instruction I need to do. When trying to change the name then this appears: "message": "400: Bad Request" for the change name API "message": "ok" for the /auth/verify API Specifications: Firmware revision: 4.07.... (I've updated it 1 week ago) Printer: Ultimaker 3 Extended Threads I've read for support: I have also tried "Postman" but with no success
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