Modify a Harbor Freight Dust Collector


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If you are trying to modify your one stage Harbor Freight dust collector into a two stage, then I hope this will help you out. I used a trash can and made a Thien …


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  1. Uncle Cys Woodshop said on January 19, 2017 4:15 am:

    Love the little blooper clips you add to the end of your videos. “Really its not a trash can.” LOL. Your design is almost 100% and maybe you’ve figured it out and fixed it since this video has been up awhile. The Draw out of the Thein collector going to the motor should start about an inch (or the width of the drop slot) from the plywood. This will extend the amount of time that the small particles spend swirling around and give more opportunity for them to drop into the waste bin. I have almost the same set up (I even vent outside now, I did a video explaining it but at the time had a filter box on it, changed it later) Good work though thanks for posting.

  2. Will Wyatt said on January 22, 2017 12:09 am:

    Now that you’ve air conditioned your shop, will you still be sucking all that nice cool air the shop, and venting it outside?

  3. Sandro Kovalev said on January 22, 2017 6:36 pm:

    I could tell as soon as I clicked on this video that there was gonna be a whole bunch of creepy fucks in the comments section asking to marry you lol

  4. Raul Cota said on January 23, 2017 7:07 am:

    I HAVE THE TOOLS ,,AND YOU JUST INSPIRED ME ,,,, JUST ONE THING,,, I SEE YOU RUN YOUR HAND TO REMOVE DUST ,,, EVERY TIME I DO THIS I GET SPLINTERS ,,,I HATE SPLINTERS ,,,,

  5. Jim Hester said on January 23, 2017 4:35 pm:

    I saw this when you posted it, and saved it for future use. The future is now! I’d really rather use the HF model you’re using, but have a concern about current draw. The specs show a draw of 20 amps, and I’m not sure how my house wiring would handle that, combined with my table saw, heat/ac running in the house, etc. Do you think that 20 amps is really what yours is running at, or is that just at startup? Thanks.

  6. Be Be said on January 28, 2017 2:54 pm:

    I don’t always comment, but when I do….

    looks neat…

    I like you!

  7. Leftwings22 said on January 31, 2017 12:40 am:

    Definitely an awesome video, I will be showing it to my brother who is building his shop finally.

    BTW – You really are an excellent & thorough teacher, and an inspiration to many people. Great job!

  8. Raphael Santore said on January 31, 2017 8:05 am:

    Excellent implementation of a very good idea. Thank you. raphael santore

  9. renerelire said on January 31, 2017 5:05 pm:

    Hi! In your research have you find this information?
    I bought a 1 hp dust collector for my table saw, planer, etc. I will make a cyclone for it.
    1. Does it change anything if I make the plastic and filter bags a lot smaller?
    2. How big should be the cyclone?
    3. Is it better to use only 4 inches hoses for the cyclone and the dust collector?

  10. cedric te wao said on February 3, 2017 6:16 pm:

    This is awesome.

  11. Chuck Simeonides said on February 8, 2017 8:13 am:

    I like it, great job.

  12. Robb's Homemade Life said on February 10, 2017 2:37 pm:

    My favorite part was you apologizing for an 8 minute video that went over so much material. So many video makers make 15- 20-minute videos and cover stuff that could have been made in 2 minutes. thumbs up!

  13. Eric Pedercini said on February 10, 2017 3:58 pm:

    thanks for the video April. I am researching to make a separator and I like your idea. would you change something to your design? thanks again!

  14. bonante2004 said on February 12, 2017 3:13 pm:

    Shes cute =)

  15. Fernandonandonator said on February 14, 2017 2:24 am:

    Great work…I like the ripped look

  16. dpasek1 said on February 14, 2017 8:18 am:

    You didn’t really need the toggles. A bungee on each side with the hooks on the trash can handles and the middle of the cord looped over a dowel or knob screwed to the top of the top cover would have done the job in a much simpler way. Also, try it without the baffle, or with a wider baffle slot. The baffle might be reducing your separation efficiency.

  17. 27floater said on February 15, 2017 3:47 am:

    Great video! You’ve inspired me to convert to 2 stage. Thanks!
    It’s worth noting if anyone is considering venting outside that unless you have an adequate air supply you can create negative pressure within the building. If you have a furnace or other source of CO2 / fumes, you can pull it into the breathing air. I know this because I told a guy at Busy Bee that I was going to vent mine outside and he, thankfully, warned me. Makes total sense.
    Alternatively, I built a closet for my collector and put furnace filters in the door.

  18. Michael Chapman said on February 19, 2017 4:25 pm:

    You are a very intelligent young lady. I wish that I had a daughter just like you. I really hope that your future is as bright as you.

  19. iSpread Rabies said on February 24, 2017 4:53 pm:

    Wing nut would be easier to deal with, just sayin

  20. Jason Soja said on March 1, 2017 10:37 pm:

    id hit it