Just do like a mason does.

You cut them if size is too large.  You fill the gobs with cement when the size if just slightly smaller than the required.

所有跟帖： 

• Ｔｈａｎｋｓ，Ｉ　ｆｏｒｇｏｔ　ｔｈｅ　ｑｕｏｔａｔｉｏｎ： -jinjing- ♀ (143 bytes) () 12/07/2012 postreply 15:20:11