friedl_basson

Hi - My 2 cents worth as I just ran into this problem as well. Problem started after installing Custom Support plugin Problem occurs when using custom support with running the slicer in 'standard' model first. 'My' Fix: Import standard model. Slice Standard mode. Launch preview IN PREVIEW - Add custom support and settings as needed. Slice again, problem solved 😉 Hope it helps! Friedl

Hi - I am experiencing some issues when printing larger part (5+ hours usually). I am by no means an expert, but have pretty much exhausted most of the options under the "Travelling" section in Cura. The problem I am experiencing is when the print nozzle seems to be travelling back to the 'Seam' and start printing the next layer of the shell. The Nozzle moves over the already printed infill which seems to work just fine for the first couple of hours. Later during the print (± 4hours in) the print nozzle seem to be colliding into the infill layers causing the build plate to vibrate quite drastically. Almost like a car hitting speed bumps. The print seems unaffected (other than some terrible infill patterns) but I am more concerned abut the printer and possible damage to the Z-axis lead-screw and bearings. I have attached a picture of what is happening to the infill. For this current print I have the following settings: Enable Retraction - YES Combing Mode - Not in Skin Avoid Printed parts when travelling - YES Avoid Supports when Travelling - YES Travel void Distance - 2mm (have tried anything from 0.65 to 2mm Z-hop - YES Z-HOP Height - 4mm Nozzle - 0.4mm Layer height - 0.15mm Speed - 60mm Travel Speed - 120mm Material - PLA (Proto-Pasta) Nozzle Temp - 205C Would appreciate some help. Regards, Friedl.

hi @Curven - Dit you get this working? I have some experience with the TMC (2208, 5160) series drives as replacements for the DRV series. We used them quite extensively to drive NEMA23 motors in a dispensing system we designed. Replacing the DRV with TMC became a very obvious necessity quickly to eliminate the stepper motor 'wining'. If I recall correctly, the 2208 and 2130 should be drop in replacements in the form you mentioned yes. Unfortunately it seems it wont be that easy on the UM mainboard as they are in component form rather than driver expansion boards. TMC5160 wont work as it relies heavily on SPI connections which I assume UM does not use in this case as they are using DRV-series? I am tempted to do the same, the TMC series is whisper quiet. Regards, Friedl.

Hi @Travis7s & @geert_2- Thank you for the info. The local agents recommended this oil (cheap, almost too good to be true 🙂 ) - https://za.rs-online.com/web/p/products/2520174/ I ordered some, hoping to reduce the squeaking as well but apparently that is the belts rather than the axes. I am also looking into upgrading the stepper drivers (I have some experience with steppers). I am looking at the TMC drivers, if I am not mistaken the smaller ones (TMC2208) might just be a drop in replacement. Providing that UM2 uses something like DRV series drivers of course. Judging by the 'wining' of the motors it might just be ☺️ Suppose upgrading to S3 is the logical option, but quite costly in South African Rand. Thanks again for the info, much appreciated! Regards, Friedl.

Hi @geert_2 - Thank you for explaining. I have been asking the local agents about the squeaking noise when the print head moves, but according to them it is just the "aged" belts and nothing to be too concerned about. I will have these replaced as soon as I finish my current project. Actually looking at upgrading to S3, would really appreciate dual extruding and Auto bed levelling 🙂 They just very expensive in SA, probably due to our weak currency. Enjoy the rest of your day. Friedl.

Thanks!

@Smithy - My suspicion was correct, not available here. Checking with RS, they have a ton of different lubricants so I will make sure the composition is similar to that of Unilube. Many Thanks. Friedl

Hi @Smithy - I recently bought my UM2 and upgraded to UM2+. I received a small tube of Magnalube with it, suppose that is for the Z-lead screw correct? I will see whether I can find any of the ones you mentioned here in SA. Regards, Friedl.

Hi @Smithy & @geert_2 - Thank you for your prompt response. Also thank you fort he heads up on the sewing machine oil, it is probably what I would have tried 😁 I will look for hydraulic oil. If you mention this is not the recommended solution, which oil is? Trying to print with 0.25mm for the first time today, not so good results. I will blame it on "dry rods" 🤣 Many thanks in advance! Friedl.

Hi @Smithy May I ask how often oiling the axes is recommended? I have Ultimaker 2 that was upgraded to 2+ with the extruder upgrade kit couple of months ago. Also, what oil is recommended? I have found several topics on this matter with a simple Google search, but they are often quite contradicting, mentions taking the whole system apart and hardly ever mentions Ultimaker. Thanks in advance. Friedl.

HI @tinkergnome - Thank you for clarifying 🙂 I have been thinking about changing the Firmware, but as I am still quite new to this, I suppose it is better to stick with the UM firmware. Hoping to upgrade to the 3S soon, I can really use the dual extrusion function with the type of parts I print. Especially soluble support. Just a bit out of my price range at the moment mainly due to the very weak performance of our currency vs US$. Enjoy the rest of your day! Friedl.

Hi @tinkergnome Thank you for your response! I checked, am most definitely using the Ultimaker GCode at this moment. The Cura version is 4.8.0 I should have been more clear, I can stipulate the printing temperature when setting up the material in the "Manage Materials" sections. See attached. I will look into this, I have 0.4mm installed and would like to reduce temperature to ±205C for PLA I am using as apposed to manually "Tuning" it with every print. Thanks again. Friedl.

Hi - I have read through a couple of posts on this topic, but as most of them are quite dated, I am not sure whether anything has changed. For the first time I tried printing with a 0.8mm nozzle and decided to fiddle with the printing temperature while printing to try and alleviate some of the "cotton candy" stringing I have been experiencing lately. To my surprise I noticed the Nozzle Temp was printing at a staggering 240C as apposed to the 205 set in Cura. After some reading, it seems the Printer G-Code setting needs to be changed to ReRap in Cura away from the Default (which in my case is Ultimaker2). This now also begs the question, does any of the settings in Cura get applied to the printer at all, ot does everything have to be set on the machine. Is this still the case? In contradiction to one of the posts, the material selected on my Printer is PLA... So I cannot see a reason (even though not adhering to the settings in Cura) why the machine would be printing at 240C with PLA loaded. I would appreciate the help. Kind Regards, Friedl.

Hi - Is this still available? Regards, Friedl