2 Liter Bottle Funnel Insert

prusaprinters

<p>Two-liter soft drink bottles found in the US can make for some very useful funnels after consuming the contents. However, when cutting the bottom off, it leaves very flimsy sides.</p> <p>I designed a round insert for the cut-open end to stiffen the sides/opening. It's a friction fit and you may have to ever so slightly scale due to potential differences in each bottle. I originally designed the ring based on the specs for this 2-liter bottle which stated the outside diameter as 110 mm. That was way too large.</p> <p>The final dimension which allowed the ring to snugly fit inside the cut-off end was 107.25 mm. You might have to scale up/down by .5 to 1% if the model doesn't fit for you.</p> <p>There's a 1 mm chamfer around the part of the ring that inserts into the bottle to help slide it on easily.</p> <h3>Print instructions</h3><p>Rafts: No<br/> Supports: No<br/> Resolution: .2 mm<br/> Infill: 20%<br/> Material: PLA</p>