Let's use the funnel tube to make it "strong mode" 2.

First, let's use the funnel tube to make it "strong mode" 1.": • 集塵機 サイクロン 自作 funnel tu...
Please see the description column.
★Consideration.
I just thought that the airflow would pierce the bottom like a drill with "strong use". However, as shown in the video, even if only the "strong air current" was applied to the bottom, it did not seem to blow away the dust on the bottom like the previous video. From the inspection of the Pre filter, it doesn't look like a lot of dust went to that side.
Probably, the airflow that spreads to the full size of the pail and has no coherence, but by narrowing the area with a cylinder and making it funnel-shaped, the exhaust airflow of the two units will be able to merge well with each other and increase the speed. I believe that it creates a vortex and gives centrifugal force to the dust, contributing to the reduction of floating dust.
★What I can infer from the sedimentary shape at the bottom is that the dust "falls down along the wall of the cylinder". From the video showing the airflow hitting the dust directly, it seems that the airflow does not dig into the dust at the bottom. Therefore, the dust only piled up in the center, and the surroundings fell down along the wall of the attached cylinder and piled up.
★Do you need a bottom plate? I don't think it's necessary. However, if you remove it, dust will stick to the outside of the cylinder due to static electricity. → This time, I couldn't remove it due to shooting conditions (because of my field of vision).
★Since the PVC board is used, static electricity is generated by the friction of dust. If you carelessly touch the unit, you may feel static electricity, so be careful.
★Cylinder processing is easy because the plate thickness is 0.5 mm. It is difficult to process materials with a thickness of 1 mm or more, and thickness is not necessary for functionality.
★Because the lower end of the cylinder is 150 mm or less from the bottom of the pail, the dust accumulation capacity is small. Since it was originally an embedded unit, the capacity was limited by that amount, but it is even smaller than that. This can be avoided by raising the height of the cylinder bottom, but if it is raised too much, the effect of centrifugal force will be lost, so I think it is about 5 to 60 mm. If you really need the capacity, it seems that you have no choice but to proceed to the two-story building.
★Related video URL. (Cylinder order)
Let's use the funnel tube to make it "strong mode" 1.：
• 集塵機 サイクロン 自作 funnel tu...
How to make a 2-cylinder dust collector that is the easiest off-the-shelf product 1: • 最も簡単に既製品で作られる２気筒（マルチ） ...
The easiest way to make an off-the-shelf "2-cylinder dust collector" 2.
： • 集塵機 サイクロン 自作 集塵機 の作り方 ...
No.1 "Plan" Creating a 3-cylinder dust collector production drawing: • No 1「計画編」3気筒集塵機製作図の作成（...
No.2 "Manufacturing 1" Making the chamber box prototype - Cutting the upper chamber
• No 2「製作編1」チャンバボックスプロトタ...
No.3 "Production 2" Cutting of ready-made boxes: • No 3「製作編2」既製品ボックスの切断加工...
No.4 “Production 3” Chamber box pre-painting processing: • No 4「製作編3」チャンバボックスの塗装前...
No.5 “Production 4” Curing and painting of the chamber box: • No.5「製作編4」ﾁｬﾝﾊﾞﾎﾞｯｸｽの養...
No.6 "Production 5" Processing of lid reinforcing plate-Removing paint protection, confirmation before assembly: • No.6「製作編５」蓋補強板の加工～塗装養生...
No.7 "Assembly 1" Chamber box assembly 1: • No 7「組立編1」チャンバボックスの組立1...
No.8 “Assembly 2” Chamber box assembly 2: • No 8「組立編2」チャンバボックスの組立2...
No.9 "Verification" Performance verification after about 2 months of use: • No 9「検証編」３気筒集塵機使用開始約2ヶ...
3-cylinder dust collector digest version No.1 to No. 9: • 「3気筒集塵機を作ってみた ＮＯ．１からＮＯ...
(This is a series from No.1 "Plan" to No.9 "Verification")
I made a 4-cylinder dust collector with glue: • 4気筒集塵機をノリで作ってみた（サイクロンユ...
Verification and update of 4-cylinder dust collector: • 4気筒集塵機の検証とアップデート（サイクロン...
"Planning" I tried what would happen if I put a 4-cylinder dust collector in series with 2 cylinders: • 「計画編」1つの缶で、4気筒 サイクロン ...
“Production 1”: • 「製作編1」1つの缶で、4気筒 サイクロン ...
“Production 2”: • 「製作編2」1つの缶で、4気筒 サイクロン ...
“Verification”: • 「検証編」1つの缶で、4気筒 サイクロン ...
“INDEX”of Multi-cyclone dust collector 1. : • サイクロン集塵機を多気筒にする理由 1（サ...
“INDEX”of Multi-cyclone dust collector 2. ： • サイクロン集塵機を多気筒にする理由 2（サイ...
I tried adding a Pre-filter to a cyclone dust collector: • サイクロン集塵機にPre-フィルターをつけて...
★If you enjoy the video, I would appreciate it if you could give me your impressions and opinions.
If you subscribe to the channel and turn on the notification, you can get information about my new video notification.