Ducting - transitioning from big pipe to smaller pipe at cyclone inlet

mercredi 26 mars 2014

Hi all,

I have not posted for a while, having moved and in the slow process of installing my dust extraction



I don't know if my question is particular to the CV Max (which I plan to start another thread on this when I have gotten a bit further) but I need to transition my ducting from approximately 240mm (my measurement for the internal diameter for my 225mm stormwater PVC) to around 210mm which is the inlet to the shute on the cyclone. Basically I need to handle air moving from a big pipe to a smaller 'pipe' - hopefully that makes sense. My thoughts are:

1. be lazy and just make circle holes in 2 pieces of wood (one to fit each of the above) put the pipe / shute to the end of the pieces (no further) and glue the pieces of wood together. I expect I will end up with some dust building up at the bottom and in the end this will make its own 'transition'.

2. The rolls royce (or at least a corolla:) ) version. Get a piece of wood/mdf/chipboard (or more likely glue a bunch together) of approximately 350 x 350 x 10 to 15mm and turn a 'circle' out of it where:

- one end is a good straight fit for the larger pipe

- in between I do it at an angle so the other end will fit the shute

- the other end is a straight fit for the shute

-for each end I will also need a butt for the thickness of the pipe / shute

I think I can do the better version but is it worth it?



Have others solved the above or even as an academic exercise have other thoughts / ideas?



thanks



Mick




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