Someone had some wallwart 2.1mm jacks for sale...

[markr04]

...but I can't find the post. They are plastic, great for center negative. Anyone know... or know where to buy these? The ones at my local supplier are all metal

[Alex C]

Was it this?

http://diystompboxes.com/sboxforum/viewtopic.php?t=25354&start=0&postdays=0&postorder=asc&highlight=

Alex

[markr04]

Thanks, Alex. That's the post I was looking for!