First, 一分板先痴膠板 is hard to fix it well gar.......
The 膠板 will very easy to loss down from the 一分板, therefore it cannot use the Jet saw to cut (it) 一分板+膠板 together!!
so it is not a good method.
can you use a 3 or 4分板, it will more easy to do it
just use 3-4 Screw to fix the 膠板 to the 木板 in each side , and then use a Jet Saw to cut it.
Final you can use the 釘膠痴 the 木板+膠板上牆!!
I think the 釘膠 may not hold the board on the wall with 膠漆 surface lasting , u better screw it on ~ you can hang the wood board on the wall by screw first then put the膠板 on ~ or put both of them together before you hang it !