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Thread: Benchtop Pro 2x3

  1. #49
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    Default Re: Benchtop Pro 2x3

    While room within a roo. Is the holy grail most people adding theaters to an existing home aren't willing to lose that much space. Another common building technique is staggered studs with insulation snaked between them so the drywall on each side isn't directly coupled through the wall. But this requires quite a bit of building and some space taken. For theaters, what I see more common is multiple layers of drywall (2 or 3) on ceilings and walls with Green Glue between them. All edges are caulked. This makes a very dense wall that blocks all but the lowest bass.

    David Gage
    Deep Sea Sound


  2. #50
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    Default Re: Benchtop Pro 2x3

    Quote Originally Posted by dgage View Post
    While room within a roo. Is the holy grail most people adding theaters to an existing home aren't willing to lose that much space. Another common building technique is staggered studs with insulation snaked between them so the drywall on each side isn't directly coupled through the wall. But this requires quite a bit of building and some space taken. For theaters, what I see more common is multiple layers of drywall (2 or 3) on ceilings and walls with Green Glue between them. All edges are caulked. This makes a very dense wall that blocks all but the lowest bass.
    .
    I'd just tell my kids to suck it up - Dad's watching a movie.
    .



  3. #51
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    Default Re: Benchtop Pro 2x3

    A few years ago, I made an enclosure for my DIY 15" x 15" router to contain dust and sound when my shop was in an attached garage. It was made out of 2x4s and 3/4" mdf. The door was sealed with foam tape, the air inlet and outlet were baffled, the hose to the Fein shop vac was also baffled. I used a variety of spindles including a Wofgang 12 volt spindle, a Taig belt driven spindle, a Kress spindle, and (currently) a 0.4kW air cooled Chinese VFD driven spindle. This system passed the wife test because she could not hear it running when she was in the hourse if I turned the Fein shop vac down to its lowest setting (which was plenty of suction when I was making detailed 3D carvings). Between the Fein vacuum which I usually use and a 6" 120 volt exhaust fan pulling air through a baffle (which I always use), I have no heat problems.

    Here's a link to a Youtube video showing the router running with the Wofgang spindle: You can barely hear the cutter when the door is shut. Sadly, I made the video with the Fein vacuum at full power.

    Here's a link to the build thread for this router: New DYI Fixed Gantry Router Build

    Last edited by DonFrambach; 06-11-2017 at 10:36 PM.


  4. #52
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    Default Re: Benchtop Pro 2x3

    The new enclosure is coming along. My new shop is located in an outbuilding so the demands for sound attenuation are not as great as for my smaller router when it was in my attached garage shop. However, the router is much larger so I need access to all sides so the basic design I used for my small router won't work.

    Here's what I've made so far:

    I made vertically hinged rather than horizontally hinged doors. Here's the router with all four doors open:
    Benchtop Pro 2x3-170611-5-jpg

    Here's the router with the doors closed:
    Benchtop Pro 2x3-170611-2-jpg Benchtop Pro 2x3-170611-3-jpg

    The doors fold and are made out of 3/4" pine and 6mm plywood because the stays would only support very limited door weight. Hopefully these much thinner doors will still substantially block sound transmission. It's not well shown but the lower portion of the case where the doors latch is held in place with bolts so is fairly easily removable if I need to get better access to the router.

    I put lights inside the enclosure and allowed for dust collection:
    Benchtop Pro 2x3-170611-1-jpg

    A 1.5 hp dust collector will extract air from within the enclosure. There are so many leaks that I think a baffled inlet will not be necessary. But I can put one in at the top very easily if required.
    Benchtop Pro 2x3-170611-4-jpg

    Next week, I'll apply 3/4" mdf sheets to cover the top portion and top of the enclosure. Hopefully it's going to work!



  5. #53
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    Default Re: Benchtop Pro 2x3

    +10 Bonus Points for putting one of these on your enclosure doors . . .



  6. #54
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    Default Re: Benchtop Pro 2x3

    Finally finished the enclosure. Here are a couple of photos:

    closed:
    Benchtop Pro 2x3-170618-1-jpg

    open: (I included a picture of all 5'9" of me for scale)
    Benchtop Pro 2x3-170618-2-jpg

    The enclosure works! There is significant sound attenuation when the enclosure is closed. Here is a photo of my iphone sitting on a table about 10 feet from the router running a sound level app indicating about 57.6 decibels with the spindle running at full speed with the enclosure doors closed:
    Benchtop Pro 2x3-170618-4-jpg

    Here is a photo of my iphone (that was not touched) indicating 66.7 decibels after I opened the door facing the table:
    Benchtop Pro 2x3-170618-3-jpg

    Still have to run an actual project. The first thing I'll check is to make sure that there is enough air flow through all the leaks to allow adequate dust collection with my 1.5 HP dust collector. I will add a baffled air intake at the top of the machine if the air flow is inadequate.



  7. #55
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    Default Re: Benchtop Pro 2x3

    Just finished a quick sign. The enclosure passed the wife test; she could barely hear it when we sat out on the back patio this afternoon. I'm sure the router won't bother my neighbors now. Also, the enclosure did depressurize some but there was plenty of air flow through the dust collector so I don't think I'll put in a baffled air inlet.



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