tomhumf Posted May 9, 2019 Report Share Posted May 9, 2019 I've been working a travel mug design for a while. It is basically a tapered tall cup with a lip that fits a silicone sip lid. My biggest problem has been how to insulate it enough so you can hold really hot liquids comfortably without a handle. My current design uses a couple of circles of clay attached where you would naturally grab the cup. I have carved lines in them to aid with air flow. The cups are still a little hot to hold straight after pouring though. I have some commercially made travel cups that have a double wall as insulation but that isn't going to be possible with a thrown form. I'm wondering if I could make a thick slip to go on the outside. In the slip I would add some kind of combustible - little paper balls? Then as they burn out I'd get lots of little air pockets for insulation. I'm firing a gas kiln outside so fumes wouldn't really be a problem. Is this a crazy idea. Any other suggestions? Link to comment Share on other sites More sharing options...
liambesaw Posted May 9, 2019 Report Share Posted May 9, 2019 I've seen double walled ceramic mugs, also seen silicone sleeves. The double walled were thrown in two pieces and connected at the rim. Your idea sounds interesting, you should flesh it out Link to comment Share on other sites More sharing options...
Magnolia Mud Research Posted May 9, 2019 Report Share Posted May 9, 2019 Keep in mind that your lips, mouth, and throat are less tolerant to high temperatures than you fingers. In other words if the mug is too hot to touch, the liquid inside is too hot to drink. Link to comment Share on other sites More sharing options...
neilestrick Posted May 9, 2019 Report Share Posted May 9, 2019 Since you're already using a silicone lid, I'd just use the silicone sleeves. They'll work better than anything you can do with the clay. Link to comment Share on other sites More sharing options...
Callie Beller Diesel Posted May 10, 2019 Report Share Posted May 10, 2019 +1 for silicone sleeves. You can play with complimentary colours. Link to comment Share on other sites More sharing options...
Mark C. Posted May 10, 2019 Report Share Posted May 10, 2019 Some things are best done in stainless steel Link to comment Share on other sites More sharing options...
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