Syringe Cap (Luer lock)
thingiverse
I store my solder mask goo in little syringes so I can apply it to boards without making a huge mess. These caps are designed to seal the container while not in use. Print Settings Printer Brand: Wanhao Printer: Wanhao Duplicator i3 Plus Rafts: Doesn't Matter Supports: No Infill: 20% Notes: Note that PLA is relatively brittle, and you're going to be applying a little force to the middle part of the connector when inserting/removing the cap. I've printed mine using PETG and had good results; I recommend using either that or another strong plastic like ABS when you print yours.
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