Advertisement
If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)
Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie
Help Keep Boards Alive. Support us by going ad free today. See here: https://subscriptions.boards.ie/.
If we do not hit our goal we will be forced to close the site.

Current status: https://keepboardsalive.com/

Annual subs are best for most impact. If you are still undecided on going Ad Free - you can also donate using the Paypal Donate option. All contribution helps. Thank you.

Dust Extraction Fan

  • 30-06-2011 12:01AM
    #1
    Slidey
    Closed Accounts Posts: 12,811 ✭✭✭✭


    Hi there. Hope someone here can answer my question

    A friend of mine has made a dust extraction fan for his lathe to get rid of sawdust.

    However there is a lot of disturbance around the edge of the box and the dust is swirling all over the place. The box is little more tapered than what I have drawn but the pic should give you an idea of what I mean.

    What would he need to do to minimise the messy airflow around the edges of his box? Box is made out of 12mm ply. Would the thickness of the material cause an issue?

    dust_fan.gif

    Fan is about 10 inches in diameter and box about 16 inches square at widest point.

    Thanks


Comments

  • #2
    Turbulent Bill
    Registered Users, Registered Users 2, Paid Member Posts: 1,640 ✭✭✭Turbulent Bill


    There might be vortices forming at the edge of the box which are causing the dust to swirl. I'd try making the box taper as gradual as possible (like the end of a trumpet) so the airflow doesn't have as sharp a transition, and make the box section itself longer (fan further from the edge).


  • #3
    Slidey
    Closed Accounts Posts: 12,811 ✭✭✭✭Slidey


    Thanks Bill.

    We can give that a shot I suppose. I'll let you know it goes..


Advertisement