MDF Board Joining

[Hamfist]

How is it best to join 2 boards of 9mm MDF edge to edge? Tried using a 10cm batton, Gllued and screwed with 3/4 screws, fell apart as board was too heavy. Is a wider batton the only answer??????

[Count-A-Strong]

Vertically or Horizontally?

[Hamfist]

Horizontal join,

[Count-A-Strong]

The MDF should really double rebated or biscuit jointed. As you don't give the lengths of the two boards and where the joint is, or the width, trying to give a proper answer is a bit like juggling soot.

[Hamfist]

Good plan Count Arthur! 1220x610 joined along the 1220 side. Now if it is soot juggling you want to know about..........

[Count-A-Strong]

Double rebated would be simplest with a 75 x 25mm SW batten along the joint. MDF is a bugger to get a neat finish with on the butt hence many people chamfer the edges to make it look deliberate.

http://jugglingsoot.blogspot.com/

[Hamfist]

Thanks Count A off to the shed!

[The Builder]

Ham........ I know The Count is on the case, but, wouldn't it be a lot easier to buy a 2420 x 1220 sheet and cut it in half?

[The Builder]

oops ......... 2440 x 1220 ^^^^

[Hamfist]

Hi builder, good idea was trying to use materials I already had. Will give the rebating a go in the morning, if all else fails i will then go and buy a full sheet of Ply which would look better anyway! :)