Free 173 Best Homemade Tools eBook:  
Results 1 to 8 of 8

Thread: DIY Welding Fume Extractor

  1. #1
    Supporting Member KustomsbyKent's Avatar
    Join Date
    Dec 2014
    Location
    South Dakota
    Posts
    132
    Thanks
    982
    Thanked 88 Times in 55 Posts

    KustomsbyKent's Tools

    DIY Welding Fume Extractor

    Here is my DIY Welding fume extractor that I knocked together. It's only a prototype for now, hence the cardboard, but it is functional, and will be quite useful as I start the finish welding on the All Terrain Track Chair (ATTC).


    For those interested in the ATTC project, it is a custom built tracked vehicle specifically for a client who is confined to a wheelchair and has quite limited physical limitations. This vehicle will provide him mobility to see his large undeveloped property.
    More here:
    All Terrain Track Chair (ATTC) - Kustoms by Kent

  2. The Following 2 Users Say Thank You to KustomsbyKent For This Useful Post:

    Andyt (08-17-2019), Jon (08-16-2019)

  3. #2
    Supporting Member JKeetonKnives's Avatar
    Join Date
    Aug 2019
    Location
    Texas
    Posts
    34
    Thanks
    19
    Thanked 87 Times in 18 Posts

    JKeetonKnives's Tools
    Very slick sir! Thanks for sharing.

  4. The Following User Says Thank You to JKeetonKnives For This Useful Post:

    KustomsbyKent (08-16-2019)

  5. #3
    Content Editor
    Supporting Member
    DIYer's Avatar
    Join Date
    Aug 2013
    Posts
    3,091
    Thanks
    463
    Thanked 989 Times in 912 Posts


    Thanks KustomsbyKent! We've added your Welding Fume Extractor to our Welding category,
    as well as to your builder page: KustomsbyKent's Homemade Tools. Your receipt:




  6. The Following User Says Thank You to DIYer For This Useful Post:

    KustomsbyKent (08-16-2019)

  7. #4

    Join Date
    May 2019
    Posts
    1
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Very cool

    Any way to add a metal screen spark arrester to keep the filter/box from catching fire?

  8. #5
    Supporting Member KustomsbyKent's Avatar
    Join Date
    Dec 2014
    Location
    South Dakota
    Posts
    132
    Thanks
    982
    Thanked 88 Times in 55 Posts

    KustomsbyKent's Tools
    Quote Originally Posted by DSTP View Post
    Any way to add a metal screen spark arrester to keep the filter/box from catching fire?
    Good idea. I may implement that on the next version of this, maybe right at the inlet on the end of the pipe. For now, I have ~15' of pipe on it, and the suction power is fairly low, so the risk of a spark making it all the way back to the cardboard is quite low. However, I am keeping an eye on it as I do welding.

    Thanks for watching!

  9. #6
    Supporting Member Saltfever's Avatar
    Join Date
    Apr 2012
    Location
    NorCal
    Posts
    97
    Thanks
    58
    Thanked 32 Times in 19 Posts
    For a good weld MIG requires a cover gas. The video shows the fume extractor works but what about weld quality? In outdoor MIG welding the wind can be a problem and care is taken to shield the weld area. In schools the fume hood is usually quite far from the work allowing the shielding gas enough lag time to be effective. Have you experimented with different distances or is your flow so low as to not have an effect on weld quality. Very nice video and great idea. Thanks for sharing.

  10. #7
    Supporting Member KustomsbyKent's Avatar
    Join Date
    Dec 2014
    Location
    South Dakota
    Posts
    132
    Thanks
    982
    Thanked 88 Times in 55 Posts

    KustomsbyKent's Tools
    Yes, that's correct that MIG welding requires good gas coverage to prevent porosity in the weld.
    After laying more than 240 inches of weld using the fume extractor, only one 2" weld had porosity because I had the cone edge less than 1 inch from the weld. I noticed that right away, and made sure to position it 6+inches away from the next welds, and then it was no problem.

    The draft of air at the cone is relatively low volume, particularly with the long pipe that I currently have on it.

    I intend to make further revisions to the setup, and make it so the pipes are on an arm that positions the cone over the weld. That would capture more of the fumes going up, make it easier to position over the weld, and more portable.

    Things to do when I have more time!!!

    Thanks for watching!

    If you're curious, here's the frame that I was welding on and using the fume extractor...

  11. The Following User Says Thank You to KustomsbyKent For This Useful Post:

    Saltfever (08-27-2019)

  12. #8
    Supporting Member KustomsbyKent's Avatar
    Join Date
    Dec 2014
    Location
    South Dakota
    Posts
    132
    Thanks
    982
    Thanked 88 Times in 55 Posts

    KustomsbyKent's Tools
    Here's a followup video on the fume extractor... I doubled the fans in a specific way to increase the static pressure and increase airflow when the filters get dirty. Check out how much nasty stuff has been pulled out of the air by the filters!


    Post your reply!
    Join 41,949 of us and get our 173 Must Read Homemade Tools eBook free.



    173 Must Read Homemade Tools

  13. The Following User Says Thank You to KustomsbyKent For This Useful Post:

    Jon (09-12-2019)

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •