A few months ago I started seeing these cute Mason Jar Travel Cups all over the place. They’re inexpensive and the easiest craft you’ll do this year but I had to wait a few months before I could make my own DIY Mason Jar Travel Mug.
So why is that? Why did I wait? Because Ball Mason Jar lids used to have BPA in the lid. It was in the clear plastic coating that protects the bottom of the metal lid from rusting when it’s in contact with liquids. It was sad that so many people were making and using these jars to be safer by using glass but really each time their drink splashed against the bottom of the lid they were getting a small dose of BPA. But the best news is that this week Ball Jars announced that their lids are now BPA free! I was going to wait a few more months before buying them to make sure that the lids I was buying were BPA free but today I saw them at the store, clearly marked as BPA free, and I couldn’t wait any longer.
This project is easy and very fast.
All you need is a rubber grommets from your local hardware store or Amazon.com, a drill bit the same size as your grommet, wood to protect your surface when drilling through the lid (I used a few wooden shims), and your mason jar. I’ve seen all different sizes and shapes as mason jars used in this project but I went with the wide mouthed jars because they are tall and skinny, which means they will fit in the cup holders in my van.
A word about the rubber grommets:
These can be hard to find. I found them at Lowe’s in the section where they have the thousand drawers full with different sizes of nuts, bolts, and everything small that I usually loose. You need grommets that are 3/8″ and you should be able to judge their size through the package to make sure that you can get a straw through them. You can also order them straight from Amazon.com and get 25 of them for a lot less money – 25 Rubber Grommets 3/8″ Bore Diameter 5/8″ O.D.
Then you could make a lot of them to give as gifts for teachers, neighbors or as a very inexpensive shower attendance gift.
You need a drill bit that is the same size as your grommet. I’m not exactly sure what size drill bit I used because my husband wasn’t here. I just dug around in his toolbox until I found one that fit very tightly inside of the rubber grommet and it worked perfectly.
When it came time to drill the hole I placed the lid over the wooden shims so that I could drill all the way through the metal and into the wood. Do not hold the lid between your thumb and fingers to drill into it. When the drill spins, so does the lid which could badly injure your hand if it got away from you. I just placed my hand flat over the top of the lid and held it securely that way.
Drill a hole all the way through the metal lid. Any jagged pieces of metal that are left around the edges can be removed by manipulating your drill bit against those edges to use it like a file.
Once you have a clean hole through the metal push your grommet down into the hole and against the sides to make it have a nice secure fit.
There you go. Isn’t that easy?
The perfect cup to carry with you. Easy to wash, easy to use, and even easier to make.
I love Mason Jars and making a cup from them just makes them even better in my opinion.
Disclaimer : The Amazon link provided is an affiliate link.