Replies

1. 
   dgreen | Jan 24, 2008 01:44am | #1

   Epoxy

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   It would indeed be a tragedy if the history of the human race proved to be nothing more than the story of an ape playing with a box of matches on a petrol dump. ~David Ormsby Gore

2. 
   JMartinsky | Jan 24, 2008 02:09am | #2

   Contact cement.

   Best,

   John

1. 
   Ron01960 | Jan 24, 2008 03:06am | #3

   fiberglass resin.

3. 
   Jimurock | Jan 24, 2008 04:33am | #4

   What kind of auto bondo did you use?  If the plastic repair type, that can be used as an adhesive also.  It's epoxy.

   Jim

4. 
   JohnWW | Jan 24, 2008 05:05am | #5

   You are likely to have dramatic warpage and veneer splitting problems with that thick a "veneer" on a 5/8 inch thick substrate.

   John White

1. 
   vern | Jan 24, 2008 05:20pm | #6

   interesting answer --- I have been doing this proceedure for some ( 10 ) yaars and seems to work without any problems-- I think what you are saying is that the wood veneer ( will expand some ) that I make and is glued down to plywood and plywood does not expand ( or very little ) then the resistance between the two materials will result in destruction---- is this correct?making sawdust

1. 
   JohnWW | Jan 24, 2008 06:00pm | #7

   Two things can happen when you use that thick of a veneer:

   1.  The veneer acts like solid wood that has been prevented from moving with moisture changes resulting in surface checking.

   2.  The expansion and contraction of the veneer, especially if only applied to one side, on the stable plywood substrate will cause the assembly to bow.

   All of this is dependent on changes in the relative humidity, in many climates, like Florida for instance, the humidity stays fairly constant and these problems won't occur.  Here in New England a piece built that way would not survive a year.

   John W. 

    

5. 
   mike4244 | Jan 24, 2008 08:28pm | #8

   John White is correct, the veneer is too thick. 3/32 would be the thickest veneer I would  use. The saw marks on the back side can be removed with a card scraper instead of filling with bondo.If you use plywood for the base, the grain should be perpendicular to the veneer grain. Now that you already have put bondo on you have a couple of choices. Throw it out, or try to fasren the veneer and hope it doesn't crack. If you go for the latter, spot glue with a panel adhesive and pin or brad nail in place.

   Next time use a thin veneer,mdf makes a suitable base with less problems than plywood.

   mike