@_388550, You're welcome.
I think found them.
https://a.aliexpress.com/_EvmhMqY
These has the needed length, I think I have used M3, with 8, 10, 12 mm.
And to be honest with you, I dont remember wich length I ended up using.
I just remember that I bought the 3 of them.
Clearly you would still need to change the hole diameter.
Consider contacting me, if you still have any questions.
I wich you a great day 👍
@GreenBit_1562343 Thank you
@_388550 Hi, I am sorry for the delay, I I used something similar to the one you can find in the next link
https://a.aliexpress.com/_EGvNYvm
I couldn't find the exact one I used, but these should work perfectly, just get the right length.
Have a nice day 😊
Hola ! ¿Puedes decirme qué usaste para unirlo?
I like the design and attention to detail, however, I did slightly modify it to fit different kinds of screws and knots since it would be sturdier and adjustable that way, and the knots would be flat with the surface.