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Permalink Reply by BrianQ. on December 3, 2019 at 6:22pm

This will tell you all you need to know: https://www.cigarboxguitar.com/knowledge-base/how-to-make-a-simple-...      Those holes you talk of, I’m guessing are sound holes? They can be as big as 3” if you want them to be? I like 1 1/2” holes in the upper & lower front corners of the box , but I suggest looking in the Pics section to get an idea of what people are doing. You’ll see some thing you like? Don’t worry about acoustic volume so much, it’s gonna be loud enough, I use small boxes all the time?

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Permalink Reply by Taffy Evans on December 4, 2019 at 8:54am

Hi Andrew, the size of a soundhole in a guitar does play a part in the overall sound of the instrument, and to CBG's as well. Advising what size works best is difficult especially if using real cigar boxes, as the size of the box has to be considered. It comes with a bit of experience and experimentation. In your size box maybe a 50mm soundhole to start.

If you check photos of my CBG's I have holes of different shapes and the areas, but worked out to give best tone and volume, to the extent one can do in a small box.

Small soundhole equals more bass tone large holes favour more treble.

I have noticed that removing the decorative grills from my soundholes even improves the volume.

Just build and learn from the first one, it's going to work anyway.

Taff

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Permalink Reply by Gus K on December 5, 2019 at 5:45am

FWIW when it comes to airflow, common window screen in a vent will reduce it by ~50%.

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