• 2 Posts
  • 139 Comments
Joined 2 years ago
cake
Cake day: June 10th, 2023

help-circle
  • Are you able to mess with the first layer offset on the bambu printers? May need to bring your nozzle a bit closer, especially with a textured surface. Temps seem comparable to the stuff I have on hand.

    For cleaning, is soap and water compatible with your surface? Personally found that while IPA is fine for maintenance, a few drops of unscented dish soap in water works extremely well as a degreaser, I’ve literally washed stubborn surfaces in the sink. Petg is super picky with any residual oils and the small nozzle could totally make that worse.

    Maybe try running slower? Just to eliminate variables, may be worth running a quick extrusion calibration? Petg can be an absolute pain for bed adhesion in my experience.




  • It’ll cause more zits and the like, more stringing, don’t know that’d 100% cause the issue but certainly won’t help.

    I just did a round of nylon last week which is also super hygroscopic, bag’s like at most 8 months old but seal was intact. Even printing out of a drybox with fresh desiccant I noticed more stringing and occasional blobs + nozzle buildup over the few days (Was redoing my hotend so I inspected it, no sign of nozzle leaking), can definitely make overhangs worse.




  • What printer and what orientation did you print these?

    Almost looks like some of the ones I’ve done in abs where I didn’t get proper cooling (turned to have the bow @ 45°, 90° being straight toward the rear of the printer for reference) either from my fan settings or orientation, could try increasing the fan speed? I know you said you’ve dropped the temperature but personally I still find I need to have the part cooling fan on (do print enclosed though so YMMV)

    How dry is the filament, afaik tpu is hygroscopic (been a while since I’ve printed with it unfortunately), I’ve seen messy bow show up on less dry filament, always worth a try anyhow just to remove variables.













  • morbidcactus@lemmy.catoTechnology@lemmy.worlddatacenter liquid cooling solution
    link
    fedilink
    English
    arrow-up
    4
    arrow-down
    1
    ·
    edit-2
    2 months ago

    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.


  • I’ve used the wired equivalent of the Logitech g502 for a while, and my partner has the wireless one, I liked them as well. I’ve used Logitech, steel series, Razer and Saitek mice over the years, started with a Logitech G7, and there’s a reason I went back to Logitech mice after using some of the others. Imo you can’t really go wrong with one of their midrange models with a decent sensor, won’t break the bank and found them fairly reliable.

    As a bit of an alternate, I know you prefer wireless, but I’ve been using a Ploopy Mouse for few months now. I don’t do online fps stuff anymore, but was great for FPSs (some boomer shooters mainly) and RPGs it’s solid, been playing a lot of Diablo 2 recently and it’s great. It runs qmk so it’s customisable however you want, sensor seems decent and the entire thing is open source, designed for user serviceability.