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<blockquote data-quote="JohnEJanowitz" data-source="post: 3748455" data-attributes="member: 584636">This isn&#039;t too big of a deal at all.&nbsp;&nbsp; You need to glue the frame down to the top plate also, otherwise it will vibrate and rattle after time.&nbsp;&nbsp; The bolts main function is to keep the frame from shifting side to side on the top plate.&nbsp; Even 3 bolts combined with the glue will be plenty.&nbsp; We used to buy our AV woofers from a manufacturer you&#039;re probably all aware of.&nbsp; We had many with only TWO or THREE out of 6 even put in.The other thing that is good to do is use heatsink grease between the top plate and frame.&nbsp; It helps transfer heat to the frame and cool the top plate.We get all of these fun things to deal with daily.&nbsp; Holes not aligned, holes too small, holes never drilled where they should be.&nbsp; It&#039;s lots of fun.&nbsp; I think about 25% of the time it takes to build a woofer is just inspecting the parts to make sure they&#039;re right.&nbsp; hahaAh yes, I spent probably 6 months just researching glues.&nbsp; The problem is that there are so many surround types to glue to.&nbsp; For foam or natural rubbers you can go get a tube of model cement in the hobby section at walmart.&nbsp; It&#039;s similar to the stuff we use, and should hold ok.&nbsp; On rubber surrounds, wiped the surface down with MEK then scuff the surface that glues down to the frame before gluing.&nbsp; For santoprene or epdm you face another challenge.&nbsp; Santoprene not only has the surface oil but continues to keep secreting oil over time.&nbsp; So you may be able to bond to it temporarily, but it can still fall apart later.&nbsp; We use a loctite primer for hard to bond plastics and a loctite CA glue.&nbsp; There are also adhesives you can get for EPDM roofing and rubber roof repairs that work ok also.Spiders are pretty easy to glue.&nbsp; The challenge you face is that any sharp edges created by a very hard expoy act like a knife edge and wear right through the spider as it moves.&nbsp;&nbsp; The model cement is a good option for spiders also as it doesn&#039;t get extremely hard.On gluing to the frame, scuff the surface under the surround and under the spider.&nbsp; If the surface is smooth your glue will stick to the spider or surround but can come clean off the frame.John</blockquote>

[QUOTE="JohnEJanowitz, post: 3748455, member: 584636"] This isn't too big of a deal at all. You need to glue the frame down to the top plate also, otherwise it will vibrate and rattle after time. The bolts main function is to keep the frame from shifting side to side on the top plate. Even 3 bolts combined with the glue will be plenty. We used to buy our AV woofers from a manufacturer you're probably all aware of. We had many with only TWO or THREE out of 6 even put in. The other thing that is good to do is use heatsink grease between the top plate and frame. It helps transfer heat to the frame and cool the top plate. We get all of these fun things to deal with daily. Holes not aligned, holes too small, holes never drilled where they should be. It's lots of fun. I think about 25% of the time it takes to build a woofer is just inspecting the parts to make sure they're right. haha Ah yes, I spent probably 6 months just researching glues. The problem is that there are so many surround types to glue to. For foam or natural rubbers you can go get a tube of model cement in the hobby section at walmart. It's similar to the stuff we use, and should hold ok. On rubber surrounds, wiped the surface down with MEK then scuff the surface that glues down to the frame before gluing. For santoprene or epdm you face another challenge. Santoprene not only has the surface oil but continues to keep secreting oil over time. So you may be able to bond to it temporarily, but it can still fall apart later. We use a loctite primer for hard to bond plastics and a loctite CA glue. There are also adhesives you can get for EPDM roofing and rubber roof repairs that work ok also. Spiders are pretty easy to glue. The challenge you face is that any sharp edges created by a very hard expoy act like a knife edge and wear right through the spider as it moves. The model cement is a good option for spiders also as it doesn't get extremely hard. On gluing to the frame, scuff the surface under the surround and under the spider. If the surface is smooth your glue will stick to the spider or surround but can come clean off the frame. John [/QUOTE]

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