Collection of panels part 1

Hi all. I used to work in woodworking, but switched to 3D printing. I still have some files that I used.

This is not my design and the author is unknown to me.
I provide the files as they are.

This can be used for teaching, designing or creating your own items.

I used some files in 3D printing when making souvenirs.
Be careful, the files are large.

UPD. I've added to the collection. Second part :

https://www.printables.com/model/595524-collection-of-panels-part-2

Part 3:

https://www.printables.com/model/595532-collection-of-panels-part-3