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where to find thin wall plastic tube?

Hi, I'm building a wind tunnel, and want to achieve a more laminar flow. I've tried drinking straws but they seem to stop the air flow too much. So I made a much larger bore honeycomb with toilet roll tubes. That worked a lot better, so now I'm after something a little better looking.

Does anyone have any ideas for where to source a few meters of thin wall plastic tubing? About 25mm -> 35mm diameter. Transparent would be ideal.

Thanks!

Picture of where to find thin wall plastic tube?
Re-design7 years ago

Try these people.  I got some stuff indirectly from them and liked it.

If not them the google "thin wall plastic tubing" and go down the list.