In a word, quality is very important. If your wood square is used as a supporting template in structural construction, it is best to use new wood square. If it is only used for decoration, the problem is not big, but it is relatively difficult to deal with deformation.
Confirm that there is no problem, then you can calculate the engineering quantity, calculate the cost and compare the price of the new wood square.
Template, steel template, steel-wood composite template, etc. You can use it. Without drawings, you can't explain it without knowing the specific situation.