Speaker Adapter Ring 5.25 to 6.5 inch

The rear deck of my car accommodates a 5 1/4 inch speaker and I wanted to install some larger 6 1/2 inch speakers so I designed this adapter ring. Because my printer has a small build plate I had to create it to press together and divide it into four pieces. There's no need for glue. When it is mounted in place it will be nicely held together.