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Joined 3 years ago
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Cake day: June 25th, 2023

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  • I generally come across specific things that prompt me to print a custom solution for my life. I wouldn’t be surprised if there literally isn’t any truly useful better-3d-printed-than-purchased thing that someone can recommend for you. (But maybe I’m just not imaginative enough :))

    Maybe the biggest category of things is replacement parts for stuff around your house. The $7 doohickey might cost you $1+time to print instead.

    That said, here are some things I’ve printed for use around my house, which might give you some ideas for your own life:

    • drain spouts with hose connection to route water from my gazebos “gutters” to the ground instead of just splashing down out of a hole
    • a cover for the switch on my floor lamp so the light can only be toggled with the wall switch instead of in 2 places
    • wall mount for my cable modem/router
    • temporary oil cap replacement for my car when I accidentally lost it after changing the oil
    • custom tool holders to 5-S my workspace
    • large v block clamps for my drill press
    • riser for my bench top power supply, to tilt it at a better angle for viewing
    • infinite toys for my kids
    • replacement part for a model kit that my kid accidentally broke
    • handlebar basket custom sized for my kids bike
    • replacement latch clip for my car’s fuse cover



  • Every filament - literally 100% of them - will print better when dry. Brand new filament can be wet. PLA, sitting in my printer for a couple weeks, can get brittle enough from absorbed moisture to crack in a dozen places in the ptfe feed tube. So yeah I guess petg is moisture sensitive, but my take is that everything is. So I would recommend a filament dryer, and using it on new spools and spools that haven’t been used in a while.

    Vacuum sealing will help, but I still dry filament after storing in vacuum sealed containers.

    That said, you could also just wait until you see signs of wet filament before drying (stringing, bad surface finish, etc).


  • Petg is the best all-around choice for structural applications that is easy out of the box.

    I wouldn’t worry about chemical compatibility with laundry detergent, but if you can find the relevant ingredients there are many compatibility charts you can look for. It’s not straightforward for most common filaments though.

    For the first case, if you want to push a little deeper I’d suggest carbon-filled petg. You would need to buy a hardened nozzle for it.

    For outdoor applications, you could look into Asa.





  • Boil water advisories are often immediate - like a check valve has failed unexpectedly and there is, this very instant, a risk if sewage in your tap water.

    Hard to mobilize a city-wide door-to-door campaign with such urgency.

    As a secondary option, sure. But it’s not always like a planned-for-months water main replacement.

    The four channels OP listed do seem inadequate though.