[ljguitar]

Originally Posted by Kip Carter

The plastic bag idea is appealing but I'm not real comfortable with cutting slits and having that bouncing around in my guitar case could be kept in a soft cloth bag I suppose but just wasn't settling well in my head.

Then I remembered that there are micro perforated plastic bags on the market that would likely not require cutting slits in to achieve the same effect.

Has anyone used those for a homemade case humidifier?

Hi Kip...

I've been making and using Ziplock/Sponge humidifiers in my case for over a decade now, and they don't bounce around. Once put under the head stock they stay put. Soap dishes - those bounce/roll around.

To cut the slits in the bag, I roll it up from the bottom in about then cut or nick the bottom of the rolled up piece and it puts about 20 little cuts in the bag. I made a video of it.

Build your own case humidifier for a buck or less - CliCk

The point is to wring out the sponges well before inserting them into the bag, and then drying off the bag. They should not be exuding any moisture.

I've never even seen micro perforated bags.