Salt.Forest Posted February 12, 2022 Report Share Posted February 12, 2022 Hi all, I've been playing with a stemless wineglass form. What I've noticed is that they tend to get wine residue on the outside after sipping. I'm guessing it's because of the inward angle of the lip? The lip is gently rounded. On mugs I don't see this issue, but my lips are angled outward there, so liquid would more easily run back in to the cup. Has anyone else experienced this, and does anyone have recommendations to fix? -Amanda Link to comment Share on other sites More sharing options...
oldlady Posted February 13, 2022 Report Share Posted February 13, 2022 i notice that the 3 are different, a little like papa bear, momma bear and baby bear. the one in the foreground on the left in the photo goes outward more than the one in the middle and the one in the back is straight up at an angle. which one leaks? Link to comment Share on other sites More sharing options...
Salt.Forest Posted February 13, 2022 Author Report Share Posted February 13, 2022 The one in the foreground- though I threw a beer of other ones with similar variations that also had the issue. I wonder if commercial wineglasses do this too and I just never noticed?? Link to comment Share on other sites More sharing options...
Mark C. Posted February 13, 2022 Report Share Posted February 13, 2022 The angle of the lip is the issue, as you are noticing everything matters.How about a straight up lip and see what happens ? Link to comment Share on other sites More sharing options...
Pres Posted February 13, 2022 Report Share Posted February 13, 2022 Try a break line and then a 1/2" lip fit flair at the top. best. Pres Link to comment Share on other sites More sharing options...
Min Posted February 13, 2022 Report Share Posted February 13, 2022 12 hours ago, Salt.Forest said: I wonder if commercial wineglasses do this too and I just never noticed?? In addition to the shape of the rim the thickness of the wineglass vs ceramic lip works into the equation. Link to comment Share on other sites More sharing options...
Chilly Posted February 14, 2022 Report Share Posted February 14, 2022 20 hours ago, Min said: thickness of the wineglass vs ceramic lip I thought that too. Compare drinking out of thick mugs vs thin glass. Link to comment Share on other sites More sharing options...
PeterH Posted February 14, 2022 Report Share Posted February 14, 2022 Might be interesting to try wine out of a thick-walled mug. Both the viscosity and surface tension of wine and and water differ quite significantly. I think you would have already noticed, but the shape of the vessels might encourage sloshing. Link to comment Share on other sites More sharing options...
Min Posted February 14, 2022 Report Share Posted February 14, 2022 I was thinking about this a bit more and wonder if you drank a non alcoholic drink from the same cups if the dribbling would be less. I was thinking of fluid dynamics and surface tension so did a quick search and came across the article below. Snippet from it is "...alcohol content at least as high as 13.5 percent. (That's because alcohol has a lower surface tension than water.) If you spread a thin film of water on your kitchen counter and place a single drop of alcohol in the center, you'll see the water flow outward, away from the alcohol. The difference in their alcohol concentrations creates a surface tension gradient, driving the flow." https://arstechnica.com/science/2019/03/why-is-your-wine-crying-scientists-say-shock-waves-likely-play-a-role/ Link to comment Share on other sites More sharing options...
Salt.Forest Posted February 21, 2022 Author Report Share Posted February 21, 2022 Super interesting everyone! Thank you for all the tips and thoughts, I have some good stuff to try. Min, I'll have to test with water and alcohol. I noticed a potter on Instagram carving away some of the lip interior on similar shape tumblers, so I might try that as well. Link to comment Share on other sites More sharing options...
Babs Posted February 21, 2022 Report Share Posted February 21, 2022 On 2/15/2022 at 4:41 AM, Min said: I was thinking about this a bit more and wonder if you drank a non alcoholic drink from the same cups if the dribbling would be less. Was wondering where you were about to go with that opening statement:-)) Link to comment Share on other sites More sharing options...
Callie Beller Diesel Posted February 22, 2022 Report Share Posted February 22, 2022 It might be easier/less work to take a rib to the inside of the lip and create an angle there while the pot is still on the wheel. Link to comment Share on other sites More sharing options...
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