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If you're using food safe PLA, there are no "harmful chemicals" soluble in sweat. The food safety issues that remain are surface imperfections where bacteria or mold may grow. These are almost certainly not an issue unless you're actually eating from the object or otherwise putting it in your mouth/body. People touch similar objects and have them ...


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Polypropylene should be good, and relatively easy to print. Prinsco rate its resistance to NaOH as A-Excellent. Ultimaker provide a useful guide to the chemical resistance properties of 3D printing filaments.


1

Advantage: It should print like regular PLA at PLA temperatures. Disadvantage: the embedded metal particles are abrasive and will widen your standard brass nozzle over time. The fix is to use a hardened steel nozzle, or for the extreme, there are options like ruby-tipped nozzles. Advantage: It should look "metallic" in a way that is more durable ...


1

A (pre-2019) stock ender3 can't print tpu because of a 3mm gap between the driver in the extruder and the bowden tube. But there are multiple adapter plates on thingiverse that close this gap, and then tpu works fine (with some tuning). I got tpu to work for small parts even without the adapter plate.


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There are ESD safe nylon filaments available, but even they will be well above their glass transition (= softening and sagging under their own weight) before they get up to 165 °C. What I'd recommend is looking for a method to resin print the parts and add your ESD protection as a post-process. Most UV cure resins are thermoset, in that they won't soften at ...


1

I can't comment directly on Giantarm PLA Wood, but I can give two endpoints: I have an antenna sleeve (for the amateur radio antenna on my car, to keep it from folding when it shouldn't) printed from black generic PLA; it stands in direct sun and has so far withstood air temperature of 37 °C (in direct sun, remember) without any visible deformation -- and I ...


1

You can place a 2-4 mm thick MDF board on the bed and print directly on it, or you can place a 2 mm thick cork foil (IKEA office desk supplies) between magnetic plate and aluminium heater. The magnetic plate should not absorb too much heat and the cork will avoid conduction to the aluminium heater. If you want to avoid the magnetic plate, print on paper/...


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The surface won't work The only true-metallic surface treatments I know to be actual metal in large enough amounts to conduct electricity would be leafmetal, akin to leaf gold, and electroplating. However, you can't use the procedures for stainless steels, and even then, the thickness is in the tenth of a µm area and lower. Not only would that be far too ...


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This depends on application. Definitions: Vicat softening point. Vicat softening temperature or Vicat hardness is the determination of the softening point for materials that have no definite melting point, such as plastics. It is taken as the temperature at which the specimen is penetrated to a depth of 1 mm by a flat-ended needle with a 1 mm² circular or ...


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