The water is to keep the lint/dust from flying out of the top venting holes. The moisture weights down the particles.

Thank you for taking the time to voice your concern, but please don’t knock others’ ideas and creativity down unless you’ve done/built/made the exact same thing, and found your criticism to be valid. I’ve already answered the same concern to a previous commenter. You can look that up if it suits you.

@@SydBuilds If all you want is sycophants, maybe the internet isn't the place for you. I think that "grow a thicker skin if you're going to put your work out to the world to review" would be better advise in this case. Followed closely by "show that design feature in your video" as a close second. As a general rule, no one is going to read a zillion comments.

Yes, I know. The world is full of experts who use their keyboard to do the talking, criticize others, provide unsolicited advices, and share pompous opinions, but, more likely than not, have no real world experience in the very topic they speak of.

The world is also full of videographers and engineers. Sometimes they're the same person. 😉 I took a course once where they said that feedback is a gift from the person to you, and that you should use it that way. But hey, rock on with the passive aggressive.

Feedback and a criticism are not the same. Sounds like you enjoy learning so I’d like to recommend the article by Forbes that focuses on the subject. Google “feedback vs. criticism” and it’s the first result. It highlights the differences. It’s also helpful to note that unsolicited advice is disrespectful and presumptive. It communicates an air of superiority that your ideas and opinions are best or better. Constructive feedback is helpful. Unsolicited advices are critical and not helpful. None of what I said is passive aggressive. They’re statements, but the interpretation is always on the reader, so interpret away. You seems like someone who needs a thorough explanation in order to understand someone’s else idea. Perhaps you’re a read/write learner instead of visual so here’s my response to your initial “bad execution” comment. Yes, you are correct, the motor needs venting. No, you are wrong that having the bucket sits on top of the vacuum restricts airflow. It actually provides MORE AIRFLOW. From the 2-2:15 mark, I’m removing the original cover. You can see the one minimal, 1”x4”, air vent grille on the cover. At the 2:40 marks, I’m installing the bucket to the top of the vacuum using the existing screw holes that are meant for the cover. You can also see that the cover is on the ground. I did not put the bucket over the cover. I understand that the video doesn’t show the gaps underneath the bucket, so I can see your conclusion that the bucket blocks the airflow. However, if you go back to the 1:56 mark, you can see the top of the vacuum and the dome shape of the original cover. Once the cover is removed, you can see that the cover was attached with screws to the 4 “posts”. You can also see the 4 large high points on the top of the vacuum. I think by seeing how the cover is attached and what the top of the vacuum looks like once the cover is removed, you can probably understand how the bucket doesn’t restrict airflow. If you still don’t understand what I mean, here’s an explanation. Because the bottom of the bucket is flat and bigger than the cover, it sits on top of the 4 large high points, rather than against the airflow opening, while still attached to the vacuum at the 4 “posts”. This positioning prevents the bottom of bucket from completely sealing off the air circulation. If you still don’t see how my construction allows airflow from the explanation above, please email me and I’ll send you some diagrams. I am an educator, so I understand that there are different styles of learning. Please do understand that it’s nearly impossible to make a video that shows every single thing or addresses every concern and still keep it short. I’ve been using the set up regularly for the past 3 years. Its currently being used to clean up debris from a house renovation. I can attest that it works as well, if not better than, the original.

Thank you for your concern. Have you look at the date when this video was uploaded? It’s been functioning without issues since. Unless you’ve built the exact same system and had experience with the problem you spoke off, you don’t have to worry about the functionality of the support. Creativity requires risk taking. Worrying with “what if….” “what might happen…” hinders progress.

Home Depot. They’re available for Rigid shop vac.

Have you try loading all the weight on top of the vacuum and roll it around with the existing casters? Build the same thing, minus the box and let me know what you think. By the way, the box is also use to store the accessories/attachments.

@@SydBuilds I have

www.ridgid.com/us/en/4-gallon-portable-wet-dry-vac I agree. Space saving is critical in a garage shop. Hope that helps!

What constriction are you referring? There is none that I see.

@@SydBuilds the whole cyclone is a constriction. Every bend or ripple is. Yet at 5:20 you say that there is now more airflow. That is not possible unless there where other changes, such as a swap to a coarser and not-plugged up filter.