Tool’s new album has been the source of much speculation for over a decade now, as fans wonder when and if it will come to pass.

The band’s recent U.S. tour dates were the first major sign of activity for some time, and now bassist Justin Chancellor has told the MetalSucks Podcast the album is close to complete.

“We’re about 90 percent there, it’s been like a crazy science project—kind of like a petri dish”, he explains. “We’ve just been really picky over what we want to put on this new album and really want to come up with something completely unique. Plus, we have endless amounts of material to sift through, so it’s just been a process… a little different from last time.”

He credited the tour with being the kickstart the band needed to complete the project.

“Being out the last couple of weeks on the road and playing together, this year, we’ve really kind of hit a new level, I’d say: really excited to be around each other, and we’re gonna just bang it out when we get back home, we’re ready to go…”

Listen to the podcast below.