Replies

1. 
   rslatm | Dec 08, 2002 10:06pm | #1

   Just use what you normally use. It's not like leaving it out in the rain.

   Rick

1. 
   DWRead | Dec 08, 2002 10:29pm | #2

   Thanks, Rick. What type of sealant would you use? I need to glue plywood to MDF, and it's a large area. Should I seal all sides of the MDF before assembling, or will the sealant prevent the glue from working?

   Janet

1. 
   rslatm | Dec 09, 2002 12:39am | #3

   Not exactly sure what you are doing. I would seal after gluing or the glue won't bond as well unless you sand off the sealant to where you want to glue to. The only problem with a water based glue is the warp and balance of gluing to one side. You know the thing about gluing to both sides of a substrate for balanced construction.

   Rick

1. 
   DWRead | Dec 09, 2002 04:41am | #4

   I'm making a sliding shelf (to hold a computer keyboard) for a built-in desk. The drawers that will be replaced are supported by a frame of laminated MDF that screws to the underside of the desktop, so I made the shelf and its frame out of Ultralite.

   This MDF doesn't have plastic laminate on it, so the shelf needs to be surfaced with something smooth and durable. There's a piece of  1/4" birch plywood in the garage, which I will glue to the top of the shelf. But that leaves the shelf unbalanced, so I plan to seal the MDF--in the hope that sealant will keep it dimensionally stable.

   Will this work?

   Janet

   Edited 12/8/2002 10:16:24 PM ET by DWREAD

1. 
   rslatm | Dec 09, 2002 07:30pm | #5

   That's a fairly small piece so it should be ok.  It might warp a bit if you use a water based glue. Why not just paint it or  laminate both sides with formica.  I was originally thinking you were doing something much larger.  Seal it right after you laminate with the birch ply.

   Rick