May 21, 2025
Description
This is a small pinch jar with a faux cork lid that screws in, styled like a glass beaker with a cork. You can use it to store small parts and non-comestible powders dispensed in small quantities by pinching.
The example was printed in clear PETG (moist so it had lots of bubbles) and wood PLA. The walls of the vase are 0.6mm thick, so it's best to set the line thickness to the same when slicing so it results in a single perimeter. I like to disable infill with transparent filament since the patterns can make it appear more opaque or messy.
Food-contact note: FDM PETG/PLA prints are not certified food surfaces. Lab tests showed their layer gaps retain microbial contamination; only an interior epoxy coating restored cleanability to smooth-plastic standards (Kailo G.G. et al., Analecta Technica Szegedinensia 17 (4), 2023, DOI 10.14232/analecta.2023.4.1-9). [Analecta]
Dry table salt has a water-activity (aᵥ) of ≈ 0.75 in saturation, below the 0.86 minimum needed for common bacterial proliferation such as Staphylococcus aureus (NaCl aᵥ data; USP/FDA growth limit). [ResearchGate, microchemlab.com] Even so, the unsealed print is still outside food-contact compliance—treat the jar as disposable or epoxy-sealed, not “food-safe.” |
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License:
Standard Digital File License
Markury
