Another Sonotube stuffing question

Discussion in 'Archived Threads 2001-2004' started by TimForman, Mar 10, 2003.

  1. TimForman

    TimForman Supporting Actor

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    I've nearly completed my Sonosub. I've noticed that the inside of the tube is coated. How to you keep the polyfil from slumping since nothing seems to stick to that coating? If this was just a little guy it would be easier but this one is 6 feet long.
     
  2. Seth_L

    Seth_L Screenwriter

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    Stapler?

    Seth
     
  3. ThomasW

    ThomasW Cinematographer

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    If you're using the batts of 'bonded' poly or pieces of acoustic foam, those easily attach with hot glue.

    Attaching loose fill is a bit of a problem.......
     
  4. TimForman

    TimForman Supporting Actor

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    Yep, I was trying to use loose polyfil but batting and hot glue sounds like the solution.
    Thanks.
     
  5. TimForman

    TimForman Supporting Actor

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    Well, hot glue didn't work. I ended up using 1/4" staples for the batting. It's difficult getting inside a 6 foot tube.
     
  6. ThomasW

    ThomasW Cinematographer

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    That's odd I've used the yellow/amber hot glue in several tubes without problems.

    I'd be afraid that staples into the tube itself would vibrate loose over a period of time.

    I've used staples to attach the poly to the top end cap. Then just let the poly 'drape' down inside above the woofer. They hold OK in MDF/ply
     
  7. Patrick Sun

    Patrick Sun Studio Mogul

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    I used spray-on adhesive when I attached batting to line the interior wall of the sonotube on Sunosub II.
     
  8. TimForman

    TimForman Supporting Actor

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    Pat,
    I saw your picture of Sono2 and the interior didn't appear to have the lovely waxy whatever that is inside like mine does. Obviously this tube was constructed for making concrete columns and the wax lets the tube be removed easier. I hope the staples don't vibrate loose. This is somewhat outside of what others have done in that this is a 14" diameter by 72" long tube with a Shiva on one end and a 18" flared port on the other. I'm going to incorporate it into my seating platform so it'll be laying horizontal. I've taken it through a test run paired up with my Sealed Tempest and the two balance out nicely. Nearly soiled my drawers when Bourne blew up the propane tank. Anyway, I couldn't get my arm in and out of the tube before the hot glue dried, so I resorted to staples.
     
  9. Seth_L

    Seth_L Screenwriter

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    I hope that's 1 8" flared port, not an 18" flared port. [​IMG]

    Seth
     
  10. Patrick Sun

    Patrick Sun Studio Mogul

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    Mine did have the waxy lining on the inside of the sonotube.
     
  11. TimForman

    TimForman Supporting Actor

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    OK, sounds like they all have the waxy whatever it is. As for the port, kinda tough to have an 18" diameter port in a 14" Sonotube so I went with a 4" diameter port, 18" long with flares at both ends. [​IMG]
     

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