Fountain Pen ~ Ink Sample Filling Hacks

In this video I talk about ink filling hacks (I show and talk about ink syringe, ink miser, rubber grommets and plastic tubing) and we concentrate on my favorite method I recently was introduced to by a viewer:
Viewer/pen friend Idimiditavi Corpzone mentioned on my community tab that their favorite hack for filling the TWSBI Eco from a sample was tubing.
I found the Clear Vinyl Tubing ID 3/8" OD 1/2" 10 feet long made by EZ Flo 98620 for about $6 at Lowe's and this stuff is amazing - it works like a charm (just a 3-4 " segment) to fill your Eco from a sample!!! I demonstrate and fill 2 of my Ecos from samples in the video.
I plan to keep the 3/8" ID rubber tubing pieces as part of my everyday use fountain pen kit. I will share out this tubing over time with pen friends ... it's unfortunate that the cheapest mailing is now $4 for such a small item ... so it has to make sense and go with other items over time but I'm not sorry I bought the 10 foot roll ... it's about the same price as the ink miser was and it truly will get used + shared and be worth it over time.
Link to Brandon Lee's Goulet Pen Company Ink Sample Hack video:
   • Goulet Pen Co ink sample hack  
I hope you got some good ideas from this video. Please let me know of any ideas you have.
Thank you so much.
I was going to link the Aliexpress page for the tubing but the sizes are so confusing to me on there that I think I better not as I may mislead you unintentionally.
Amazon also carries this stuff but I had to go in person to SEE what I was getting because math and fractions etc are not my easiest subject.
For filling the Eco I find the tubing to be easier even than the rubber grommets.
Let me know what you think!?
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My pen email: chris@inkswatch.com