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Old 17th February 2013, 08:01 PM   #631
guangui is offline guangui  Puerto Rico
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Quote:
Originally Posted by Switters View Post
Hi solhaga,
I had the same problem, I used vinyl glue to seal the back panel and this leaved some leakage. I tried to seal them pouring some glue from the horn mouth and then rotating the cabinet to let it flow along the corners formed by the plywood and the foamcore board.

In my experience vinyl glue is too liquid, it's easily absorbed by wood and "shrink" too much when drying. Next build I'll try a more dense glue.
Wouldn't Contact Cement be a good alternative?
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Old 17th February 2013, 08:04 PM   #632
solhaga is offline solhaga  Sweden
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I use silicone sealant:
Click the image to open in full size.
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Old 17th February 2013, 09:13 PM   #633
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Originally Posted by guangui View Post
Wouldn't Contact Cement be a good alternative
I never tried contact cement but if it is fast setting or if there are solvent reacting with polystyrene I wouldn't use it, otherwise it should be ok.

Quote:
Originally Posted by solhaga View Post
I use silicone sealant
From the photo it seems that horn throats are closed... or it's a trick of my declining sight?

Last edited by Switters; 17th February 2013 at 09:23 PM.
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Old 17th February 2013, 09:32 PM   #634
solhaga is offline solhaga  Sweden
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No, they are not closed. The foam I´m using is not rigid enough so I have to put spacers at the top. Like bridges.
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Old 17th February 2013, 09:45 PM   #635
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Originally Posted by solhaga View Post
No, they are not closed. The foam I´m using is not rigid enough so I have to put spacers at the top. Like bridges.
Mmm... this could be an useful trick, thank you
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Old 17th February 2013, 11:43 PM   #636
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solhaga, you, without a doubt, win the ugly award. They might be the best sounding of the bunch but OMG man!
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Old 18th February 2013, 12:04 AM   #637
guangui is offline guangui  Puerto Rico
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solhaga, you, without a doubt, win the ugly award. They might be the best sounding of the bunch but OMG man!
LOL, but once he puts the front baffle in place you will not be able to see the mess inside.
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Old 18th February 2013, 01:05 AM   #638
xrk971 is online now xrk971  United States
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Solhaga,
What are the channels made of? Black foam core or is that like vinyl? There are no points for internal beauty as long s it sounds good if channels are foam core and cut cleanly, they seal nicely with cheap white glue. They are also stiff in compression and would not require bracing at throat.
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Old 18th February 2013, 01:43 AM   #639
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well holy cow i was walking through the mall and i saw an "OPENING SOON" sign for a Dollar Tree store. soon i too will have foamcore at LAST!

hey can we change the name and call foamcore cornu's to cornFu's (the capital F is in praise of foamcore)
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Old 18th February 2013, 03:35 AM   #640
solhaga is offline solhaga  Sweden
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Originally Posted by xrk971 View Post
Solhaga,
What are the channels made of? Black foam core or is that like vinyl? There are no points for internal beauty as long s it sounds good if channels are foam core and cut cleanly, they seal nicely with cheap white glue. They are also stiff in compression and would not require bracing at throat.
It is 5mm XPS foam that is normally used as floor underlay.
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