Evolving the electric bass into a double bass. #3

Making a Custom Bass Guitar Build. #3
If you have any questions, please feel free to comment.
I am finally getting to the point in my work where I can easily communicate that I am building an instrument.
This instrument has a hollow construction, so it is divided into top and back wood.
For the top material, I chose straight grain spruce as per theory.
For the back, I wanted to use a soft wood based on my limited experience, and after much consideration, I chose Japanese cedar.
I live in Niigata City, and as a result of my research, I consulted with a lumberyard called Shimbataya, and they were able to provide me with the best quality wood.
I was able to purchase a piece of wood that was straight grain and had a beautiful shimmering (?) appearance.
The wood that can be straight grained at this width is about three times as wide as this....
I easily counted the annual rings and found about 200 years worth of rings, which is simply amazing... Thank you very much.
We boldly used it for the back of the one-piece dress.
It was the first time for me to have the experience of choosing a piece of wood out of all the available pieces, so I was very nervous, but it was a lot of fun.

I felt guilty because I had to carve more than half of the wood into powder, but it was something I wanted to do, so I carved with all my might.
There were some design changes along the way, but it turned out almost exactly the way I wanted.
Even though I designed it myself, my skills were not good enough, and there were some parts where I had a hard time.
To be honest, I think it would be better to make a simpler design and sacrifice some other things.
But this baby (Unit 3) is a full course, but it's a bass like a full option.
I tried to do as much as I could. Please take a look at the video.

#1 https://youtu.be/J8pK8E0GD68
#2 https://youtu.be/JzwjmgSZ1eE


Parts and tools used

TONE Power Grip Driver Set PLPGD6
https://amzn.to/2Q5MrRr

Wera Craftform Diamond Screwdriver Set
https://amzn.to/3s2RoLu

VESSEL Precision Hex Screwdriver
Set, https://amzn.to/2O6hFoC
1.27(inch)https://amzn.to/2X4xBvQ
1.5https://amzn.to/34KDAZs

Fret Polishing 3M Sponge Polishing
320-600 https://amzn.to/2YC5c0k
800-1000 https://amzn.to/2JnIEd9
1200-1500 https://amzn.to/32iG29c

Metal Polishing also Picard
https://amzn.to/32Ip7f7

For masking tape, 3M is good. For high frets on guitars, 6mm is recommended.
https://amzn.to/32H0gZ9

Dremel 4000 rotor. Great torque, but hot! If you can, get a 4000 because it can do a lot of things.
https://amzn.to/2Kh3NH5

I heard there is a new one called 4300. If you can use the base plate of a StuMac, this might work too.
https://amzn.to/3712F48

3M body polishing compound, this is enough for a guitar.
https://amzn.to/34WHuhO

It's good to have a lot of stuff, orange English oil for fingerboard
https://amzn.to/2Kh4G2n

This cloth is very good. Recommended. Seriously.
https://amzn.to/2PRUJM8

Website
https://pedaru.wixsite.com/andybassandguitar

Twitter　
https://twitter.com/Andybassguitar

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