Built to Spill Caustic Resin was an EP released by indie rock bands Built to Spill and Caustic Resin. The EP was less a split release by both bands and more a collaboration between the collective members of both bands. The liner notes list the line up as follows: James Dillion - Drums (Caustic Resin); Doug Martsch - vocals and guitar (Built to Spill); Tom Romich - bass (Caustic Resin). Shit Brown Eyes was engineered by Todd Dunnigan, the rest were engineered by Phil Ek.
The album attributes the first two tracks to Built to Spill, the third to Caustic Resin and the last to Tae Won Yu from his time in the band Kicking Giant. It also lists Brett Netson - guitar and vocals on Shit Brown Eyes (Caustic Resin). Todd Dunnigan is listed as playing organ on When Not Being Stupid Is Not Enough and moog on One Thing.
The album was originally released with cover taken from a photo featuring newly hatched fish larva and eggs, which had been found in a trash can. However, the photo's owner complained, and the cover art was changed to the image shown on this page. The album is Up Records release UP018.