Triple 7 0 Report post Posted February 24, 2009 Very common defect in carpentry industry for doors to warp. Normal contractors will not spend time pressing your door down for few days to straighten the wood when the plywood came into their hands as they are only doing your door as a one time service thing. My company got an SOP(standard operation procedure) which is that every door which exceeds 1m should be press down for a week to counter the warpage problem before the wood can be use to fabricate doors/cabinets of big sizes. Warpage seldom occurs for small size doors therefore you seldom see cabinet doors encountering this problem therefore not for a problem for you wilson. applefreak, nowadays people tend to use plywood because it is stronger, last time chipboard is widely use as it is cheap. If you are not sharp to spot these details, contractor will fleece you by using low quality wood. Hi Diablos, How to you differentiate Plywood or Chipboard once it has been laminated? Share this post Link to post Share on other sites