Design and Print a Straw Mason Jar Insert

Mason jars are everywhere. I have seen many Mason jar travel mugs in expensive coffee shops. I decided to use my 3D printer to make my own! I published another Instructable outlining how to easily remove mason jar labels.

For this project you will need:

• Tinkercad - you can get an account for FREE http://www.Tinkercad.com
• A mason jar
• A mason jar ring
• A straw
• Access to a 3D printer - Many makerspaces have their printers available for use, as do public libraries in Toronto, Tinkercad has the option to Order a 3D Print in the Export screen (pictured above).

Notice that I have added a ridge that sits into the mouth of the jar.

• Choose a name for your file and replace the fabulous Tinkercad generated name in the top left hand corner with your name.
• Add a cylinder.

• Select the bottom right white rectangle and change your dimensions from 20x20 to 68x68

• Select the white rectangle in the centre representing the height and change it from 20 to 2.5.

• Click on the 'Workplane' icon (circled in red).
• Click on the top of your first cylinder (circled in red).
• The orange workplane will be added on top of your first shape.
• Place your second cylinder on the workplane.
• Select the bottom right white rectangle and change your dimensions from 20x20 to 56x56
• Select the white rectangle in the centre representing the height and change it from 20 to 2.5.
• Select both shapes and align the shapes horizontally and vertically.

• Add a cylinder shaped hole.
• Select the bottom right white square and change the dimensions to 9x9mm.
• Select all shapes and align the shapes horizontally and vertically.
• With all shapes still selected, press group.

My print is pictured above. There are many amazing Instructables teaching you how to 3D print so I won't get into that here.

Enjoy your funky, trendy new travel mug!