https://a.aliexpress.com/_mPri9Wf
Has anyone ever tried using one of these in their pixel blade setup to see how well they would do for even diffusion? I’m sure they’d add a little more weight to your setup, but could it be worth it?
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Thanks for the discovery. No I never even knew that existed. What would you want to use them for ? Lightsaber whip ?
Actually the OD would be perfect for the inside of a 1" poly tube for the blade. I was just looking for a simple, single layer solution for good diffusion instead of having to use 3 different layers of diffusion material(trans tube+foam+plastic) around my pixel stick. I’ll let you know how it turns out. If they are as they’re advertised then they’d be well worth the low cost.
The issue I can see is that the inner shape might cause uneven diffusion.
I bought several different sizes for testing. They are heavy… I’ve only done a small amount of simple testing and they do diffuse light more evenly than conventional foam but I have not finished testing (I have a very long list of projects). My lead project is to create a light-whip using a 1" OD tube. My concerns are the 1" OD will not fit into a 1" blade and the 7/8" will rattle around too much…
Here’s a picture from my initial tests:
Posted the picture to the OpenSource FB group to save server space, assuming most of us have access to that FB group.
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I’d be interested to see but don’t use FB. In case you wanna drop a select pic or two here 
Which shape did you use? D13 / D22A / D22B?
What’s the OD? I wonder if it can fit in a pinch, or if basically it just won’t work?
And how heavy are we talking here? I really like the idea, but blades are already a bit heavy… wouldn’t want something crazy.
My AliE purchase history doesn’t go back that far… I’ll need to dig them out (I shelved the project almost a year ago…), but I’m fairly certain I got round tubes with ODs of 13, 16, 22, and 25. I’ll look for them and weigh a 1m tube.