How to thicken 9mm mdf cupboard doors

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Barry_Convex
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How to thicken 9mm mdf cupboard doors

Post by Barry_Convex » Mon Mar 04, 2019 9:49 am

Hi, some advice would be brilliant.

I'm panelling a nook for a client with 9mm butt and bead cladding made from green MDF.
They want a shelf recess turning into a cupboard with the same material.

The question is how to thicken this stuff to make it thicker and more able to take hinge screws?

I tried laminating with 5mm ply over the weekend but it has banana'd by an inch (different materials/expansion? Under floor heating?)

Do I just need a better flat surface than the (unbeknown to me, heated) floor?
Should I think of framing the back with 15mm battens instead?

Dunno, what's the best approach?

Many thanks.
dewaltdisney
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Re: How to thicken 9mm mdf cupboard doors

Post by dewaltdisney » Mon Mar 04, 2019 9:58 am

Glue same to same. Another piece of 9mm glued on makes up and 18mm thickness which is ideal. Use a non water glue to avoid any bending. If you have a router you could make your own panels up using a thicker board. The cutter is the biggest expense though.

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big-all
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Re: How to thicken 9mm mdf cupboard doors

Post by big-all » Mon Mar 04, 2019 10:09 am

cut and store in the same room for several days to acclimatize to reduce the expansion risk to a minimum
it may be easier to remake in 12mm mdf
we are all ------------------still learning
Barry_Convex
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Re: How to thicken 9mm mdf cupboard doors

Post by Barry_Convex » Mon Mar 04, 2019 10:24 am

Hmmm, thought you might say that. Guess I'm off to buy more panels then...

Thanks.
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