DYI Passive Amplifier for Smartphone (for iPhone)

I created these smartphone amplifiers that will open up and amplify the sound from your smartphone. They are passive so they require no electricity and you can put them wherever you like. They are also a beautiful home decoration and attract a lot of attention.
Background music:
WATER WOOD AND STONE by Audionautix | audionautix.com
Music promoted by www.free-stock-music.com
Creative Commons Attribution-ShareAlike 3.0 Unported
creativecommons.org/licenses/...
INSPIRE: www.bensound.com/royalty-free-...
ONCE AGAIN: www.bensound.com/royalty-free-...

[@albertstoddard4054]

I came for the woodworking lesson and stayed for the SEPULTURA!!! 😁👍🤘🤘

[@budlistar5312]

Never thought of the salt thingie. You’re never to old to learn something new.👍

[@fernandofuschini2543]

Trabalho muito lindo. É uma pena que aqui tem pessoas vendendo esses amplificadores muito barato, não valorizando a mão de obra.

[@wladimirserranocanal1268]

Gracias

[@oficinafacavocemesmo544]

Congratulations👏👏👏👏👏👏

[@MarkH10]

One KZbin hole saw tip you did not employ will really help with all hole saw cuts. Run the hole saw down and scribe your cut line, then using a different drill or your hand drill drill a 1cm hole INSIDE the waste where the outside cut meets the hole saw cut, and go all the way through your material. The result is a waste hole for the saw dust to escape the teeth of the hole saw and this produces less friction and and easier big cut. Also the plug you cut has a hole in it which you can use to remove the plug from inside the saw.

[@Aurelisk]

Where can I get one?

[@mydiywoodworking8595]

I am sorry, I only made a few for my friends :-)