Microgaser did some changes to his DriZzleR. He now uses a 70mm tube with a length of 300mm. The tube is around insulated with ash. However, there are still some air holes in the outer tube so that the flame is slightly worse than they should be. We are excited to see how the flame looks like seal the air holes. Here are the pictures and the videos from the test run.
The original article in German can be found here:
Here are the unfiltered flames:
Here you can see the air holes are located under the insulating layer. Otherwise, would not glow the complete ashes.