Help! Veneer Problem.

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Forum topic by Scarcraig01 posted 10-03-2009 10:45 PM 1159 views 0 times favorited 3 replies Add to Favorites Watch
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72 posts in 3218 days

10-03-2009 10:45 PM

Help! Why did this happen? I’m using Heat Lock adhesive with ply as a substrate. Applied with an Iron. I did exactly as the instructions said.

There was nothing in the instructions that even mentioned the possibility of this happening. Does anyone out there know what I did wrong or how this could have been prevented?



-- Craig, Springfield Ohio

3 replies so far

View papadan's profile


3584 posts in 3393 days

#1 posted 10-03-2009 11:26 PM

I believe you over heated the panel. The plywood substraight got hot and split, or opened splits in it. I have stopped using the lousy plywood the home stores carry now. MDF makes for a solid veneer surface. Use a heat gun instead of an iron and see if you can heat and shift the two outside sections back into place and close the cracks.

View eastside's profile


97 posts in 3286 days

#2 posted 10-04-2009 02:43 PM

Yup, it looks like a very wide piece of veneer. How wide is it? The heat shrunk the veneer probably as you were putting it on. Did you see or hear this as you were applying heat? Did you go slow with the iron and fully adhere a small section before moving on? It’s not like ironing clothes were you move the iron on the whole thing till it’s done. Start in the middle and move slowly in a very small circle about 12 inches and move out only when the circle is stuck good but not over heated. If it is a smaller piece like a cabinet door insert then you can start at one end and go back and forth across the short end and work your way down the board. With heat lock you can remove by starting at one end and heat it until it frees and slip something thin like a piece of plastic laminate between it and move down the sheet till it is all free. Put it on the bench and do a repair and then re-apply. You will notice how slowly you will need to go to remove it so that will give you a good idea on how slow you should go to re-apply it. It should be shrunk enough to put it back down with out the same problem again.

-- Mike, Westport MA.

View rhett's profile


742 posts in 3692 days

#3 posted 10-04-2009 03:35 PM

I see that is birdseye. Was the veneer flat before you applied it. Not kinda flat, but flat. When working with high figure veneer where there is no real grain direction, it is important to flatten your sheet prior to gluing. I make a wash of veneer softener and soak the sheets till they are fully saturated. Then stack them with brown paper bags or kraft paper in between sheets, clamped flat. Change the paper daily untill the veneer is dry. It should then be plyable and completely flat and ready to work. This is the number one overlooked step in doing any veneer work. You can also buy commercially available veneer softners if you dont want to make your own.

-- Doubt kills more dreams than failure.

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