I'm about to make a start on a circular dining table which ideally needs to be 1400mm diameter and 25mm thick. It will be veneered both sides with home cut veneers which will be about 2mm thick. This is significantly larger than can be cut from the standard width sheet that is 2440 x 1220. You can get sheets that are 3050mm x 1525mm, but they are not readily available, and the PRICE! I guess that is partially because there is 50% more material in it apart from the lower demand.
So - how about joining a strip onto the standard width with dominoes? There could be a double staggered line of 6mm dominoes. The maximum width of the extra piece would be 180mm, but that would taper to nothing quite quickly when I cut it circular. My guess is that the join would be strong enough, but would the join line show through a 2mm veneer?
Alternatively I could get a large 3050 x 1525mm sheet of 12mm ply, which is about the same price as a 2440 x 1220 sheet of 25mm ply, cut it in half and glue them together to make a half sheet of 24mm ply. Probably use about £20 worth of Cascamite, but probably doable.
Any advice on offer please? Any option that I'm missing?