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Joined 2 years ago
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Cake day: June 10th, 2023

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  • Industrial cooling towers are usually evaporative in my experience, smaller ones are large fans moving air over a stack of slats that the return water is sprayed or piped over and the collects in well for recirculation, larger ones afaik (like what you’d see at power plants) operate the same idea. Top ups and water chemistry is all automated.

    Those systems have operation wide cooling loops that individual pieces of equipment tap into, some stuff uses it directly (see that with things like industrial furnaces) but smaller stuff or stuff that’s sensitive you’ll see heat exchangers and even then the server & PLC rooms were all air cooled, the air cons for them were all tied into the cooling water loops though.

    From a maintenance POV though, way easier to air cool, totally seen motor drive racks with failed cooling fans that have had really powerful external blowers rigged up to keep them going to the next maintenance window. Yeah, industrial POV but similar idea.


  • What type of probe and what’s the config on it?

    [probe]
    pin: PC14
    x_offset: 23
    y_offset: 5
    #z_offset: 0.10
    speed: 20.0
    samples: 5 
    samples_result: average
    sample_retract_dist: 1.0
    #samples_tolerance: 0.010
    #samples_tolerance_retries: 10
    

    Is what I’ve got my pinda probe configured with, was playing around with sample tolerances like I have on my printer with a tap probe but I just found the inductive probe has a lot of variation, I added more samples to hopefully average out that error.

    [Bed_mesh]
    algorithm: bicubic
    fade_start: 0.6
    fade_end: 10.0
    bicubic_tension: 0.2
    faulty_region_1_max: 120.0, 74.0 
    faulty_region_1_min: 85.0, 45.0 # 103,69
    faulty_region_2_max: 125.0, 165
    faulty_region_2_min: 70, 110 # 103, 137
    horizontal_move_z: 2
    mesh_max: 228,210
    mesh_min: 24, 6
    mesh_pps: 2, 2
    probe_count: 5,5
    speed: 200 
    

    Is my mesh setup, based on a mk3s klipper config. Meshes look a little odd but I ran some bed level prints fine and just ran a full plate of abs with pretty consistent 1st layer.






  • Both are solid choices, you won’t be upset either way, I was 50/50 on both but decided to do the v2 for 350x350 print area. I have an enclosed mk3s that I use as well, I was putting together a buildtak surface (which I swear by for abs and nylon) for my mk3s and snapped this photo to compare print area size. I still want to do a trident (and maybe convert my mk3s to a switchwire) but I’d build it to match the MK3s wrt bed size and I’d totally consider a bowden extruder.

    All that said, it is markedly faster than the mk3s and I’m definitely no where near pushing it to its limits. There’s a lot to build but I would call it difficult, racking the gantry and belt tensioning being the parts I spent the longest time on. I limit to 24 mm^3/s even though I could go faster, it still just absolutely flies with something like a 0.8mm nozzle. My only other headsup is that modding it is addicting, I’ve thrown on titanium backers and a kinematic mount for the bed, have a whole bunch of other ones in the pipe as well.




  • Moving the bed through its full RoM by hand slowly, do you feel constant resistance? Is your motor even slightly loose? That can definitely amplify any motor noise. It’s probably worth lubricating your rails, I’m assuming you have something like a creality cr10? Here’s creality’s wiki for maintenance. White lithium grease in a syringe is my general use for printers, I do like 3-in-1 or another light oil for my Mk3s though, really easy to apply a light coat to the guide rods

    I’ve suspected resonance in my z axis on my bed slinger, only shows up with large moves and higher ambient temps, and the sound is best described as a way louder stepper noise.



  • I’m definitely looking into the Ondsel flavour of freecad after work, I’ve been using standard freecad with the Modern UI Workbench which makes it feel a bit more like other cad packages to me.

    Yeah pan and rotate are on middle mouse click, for me it’s a “this button manipulates your view” so it’s intuitive for me, for freecad I think I settled on opencascade, tried open inventor and I definitely misclick at times so I’d unintentionally rotate my view. I honestly haven’t tried rebinding but from a quick look yeah no it doesn’t support that, does have a ton of shortcuts though.

    Maker is fine if you’re like me and aren’t looking into doing a home business, but even then I do have annoyances with lock in and frankly non-windows support, my lab computer runs mint and my laptop runs debian. Be nice to use one solution across the board.


  • I use solidworks maker because they had a crazy good discount last year and it’s the cad package I used in uni and work when I was more mech focused. The licencing checks are mildly annoying but otherwise it feels like what I recall solidworks feeling like, does include the part toolbox which is really nice (ots items like bearings, scews etc. Really nice for assemblies). If I recall there’s another downside with the files, don’t recall if they can be opened in non-maker solidworks or not, believe that was a restriction with the educational version.

    Maybe its just the familiarity with the tool (though it’s been years) but I found SW really easy to go from hand sketch or idea to part, maybe its the part focused nature of solid works or the sketch focus but I found it somewhat transferable to freecad, although the mouse controls are a bit whacky to me. I honestly couldn’t get into fusion, which is odd because I remember getting on with AutoCAD and Inventor.

    In the end I feel you on wanting to like freecad, I’d really rather use a Foss solution for my personal work.