Hacker News
- Acme Klein Bottle https://www.kleinbottle.com/ 62 comments
- Conditions of ACME's Unconditional Guarantee https://www.kleinbottle.com/guarantee.htm 133 comments
- Get an Acme Klein Bottle https://www.kleinbottle.com/ 77 comments
- Acme Klein Bottle http://www.kleinbottle.com/ 63 comments
- Zero-Volume Glass Klein Bottles: 3D Immersion of 4D Shape http://www.kleinbottle.com/ 23 comments
- Besides books, what's on your Christmas wish list? http://www.kleinbottle.com/ 29 comments math
- Get your own Klein bottle - check out the "jobs" section! http://www.kleinbottle.com/ 4 comments math
- Interesting Math Models/Toys/Novelties? http://www.kleinbottle.com/ 65 comments math
- The Wine Bottle Klein Bottle http://www.kleinbottle.com/wine_bottle_klein_bottle.html 3 comments reddit.com
- Physicist Clifford Stoll sent me a personalized email with pictures when I bought a Klein Bottle. This guy is so awesome! http://www.kleinbottle.com/gallery2/main.php/v/683somephotosformichael 4 comments reddit.com
- Klein Bottle Beer Mug - I want one of these so bad! http://www.kleinbottle.com/drinking_mug_klein_bottle.htm 14 comments math
- Klein Bottle Maintenance http://www.kleinbottle.com/how_to_fill.htm 7 comments science
- Klein Bottle hats and scarves http://www.kleinbottle.com/klein_bottle_hats.htm 5 comments reddit.com
- Klein bottle drinking mug - for the topologist in you http://www.kleinbottle.com/drinking_mug_klein_bottle.htm 5 comments reddit.com
- The closest thing to a Klein Bottle that can exist in a three-dimensional universe http://www.kleinbottle.com/index.htm 46 comments reddit.com
- Construction of giant glass Klein bottle (photos) http://www.kleinbottle.com/meter_tall_klein_bottle.html 14 comments reddit.com