Can you make a homemade violin and how?

Without machines, you can hand-make a violin. It takes a lot of skill, patience and practice - even some quality material is important to have.

You can watch the How it's Made: Violins video here: At Link

Seeing it with your own eyes will make it clear, hopefully.

Here are Stages in Violin Making by Hand by a professional violin maker in the traditional way (Derek Roberts)

1. Select the wood, prepare and joint the plates
2. Glue the blocks to the mould and shape them
3. Prepare the ribs and bend to shape
4. Complete the rib structure
5. Make the linings and fix to the ribs
6. Saw out and rough arch the back plates
7. Saw out and rough arch the front plates, begin final arching
8. Prepare, mark out and saw the neck block
9. Carve the scroll
10. Carve the pegbox and Flute the scroll
11. Finish the outline
12. Inlay the purfling
13. Final arching
14. Hollow out the back plate
15. Hollow out the front plate and thickness the front and back
16. Mark out the F holes
17. Cut out the F holes
18. Glue the back to the ribs
19. Fit the bass bar to the front
20. Close the box - remove the mould and glue the front on
21. Shape the fingerboard and glue onto the neck block
22. Set the neck into the body
23. Finish the neck and back button
24. Finish the edge and final scraping

That is for making a classical violin. It's a whole different thing for an electric violin.