Canning Jar Filter Coupler

prusaprinters

<p>For some herbs and essential oils, it is desirable to keep the temperature below freezing to prevent undesirable components getting into the tincture. &nbsp;Since filtering often takes hours, I created this device to allow putting the entire apparatus in the freezer during this step - thus preventing the alcohol from warming up and contaminating the mixture.</p><p>Take care on your filament choice - you don't want plastic residues in a product you plan to consume. &nbsp;I chose <a href="https://taulman3d.com/nylon-680-spec.html">Taulman Nylon 680</a> Medical-grade filament. &nbsp;Can't say for sure it is safe so <strong>proceed at your own risk</strong> but it seemed to be the “safest” that I could find. &nbsp;I also washed mine with Everclear before using just to remove any oils that might be present.</p><p><strong>Note:</strong>&nbsp;<i> It is drawn to actual dimensions so make sure to compensate for any shrinkage you encounter. &nbsp;I experienced significant (0.5%) shrinkage when using Nylon (maybe not dry enough) so had to scale all three axis to 100.5% prior to slicing to get the correct final dimensions.</i></p><p>You will need two canning jars: 1 large-mouth and 1 small mouth. &nbsp;To use, fold the coffee filter into a cone and place over the small mouth jar containing your solution. &nbsp;Screw the coupler onto the small-mouth jar over the filter and then screw the large mouth jar upside-down onto it. &nbsp;Quickly invert to start filtering and place in the freezer if desired. &nbsp;Might be wise to place a pan below in case of leaks although I have not encountered any.</p>