Your plan to use plywood in the middle and hardwood on both sides with CNC grooving sounds promising. Here are some tips to help you along the way:
Measure Accurately: Ensure you have precise measurements of the door's dimensions and design. Accuracy in measurements is crucial for a well-fitting door.
Select the Right Wood: Choose high-quality plywood and hardwood that suit your design and purpose. Consider the wood's grain pattern and color to achieve the desired look.
Gluing and Clamping: Use a good wood adhesive to bond the layers together. Apply even pressure by using clamps to prevent gaps and ensure a strong bond.
CNC Routing: When using CNC, set it up carefully to create the desired grooves and patterns. Test on scrap wood first to ensure the settings are correct.
Safety: Be cautious when working with power tools. Use safety gear, including eye protection and ear protection if necessary.
Finishing: Sand the door thoroughly to achieve a smooth surface. Apply the finish of your choice, such as varnish or paint, to protect the wood and enhance its appearance.
Hardware Installation: Install the necessary hardware (hinges, handles, locks) precisely to ensure smooth operation.
Test Fit: Before finalizing the project, test-fit the door to make sure it fits the frame correctly and swings smoothly.
Maintenance: Educate yourself on proper door maintenance to ensure it remains in good condition over time.
Patience and Precision: Take your time with each step and pay attention to details. A well-crafted door requires patience and precision.