Cap for Single-Dose Coffee Storage Syringes

thingiverse

I've taken to storing single 18g shots of coffee in plastic syringes. Here are the ones I use: (https://www.amazon.co.uk/gp/product/B007KNNS2M). I also bought these screw-on caps: (https://www.amazon.co.uk/gp/product/B08M8PCM46). The coloured caps allow me to quickly identify what beans are in each syringe. You can find the files for the stand that I designed here: (https://www.thingiverse.com/thing:5201948) These syringes are great for coffee storage, as they're dirt cheap and allow you to easy expel any air that would otherwise sit in the head space of a fixed container (though note, they do very little for the air between the beans). However, I didn't like that the original plunger was much longer than necessary for this application, so I designed this replacement end-cap. In my case, the seal only has to reach the top of the coffee beans, not the bottom of the syringe. **I've included some important guidelines in the Print Settings section**. Of course, if you're not using the same syringes, you may have to modify the design. Do get Luer Lock syringes though, so that you can use the screw-on caps for an airtight seal.