testtubepom.stp: CAD file of the test tube used to hold the sample (step-format). OpenSPIM_SPIM-Chamber_Forvarmekanaler.stp: CAD file of the viewing chamber. Pre-heated water at physicological temperature flows through the internal channels (step-format). central element-3_SLOT:EPRT: Tube holder for the FEP-tube. The slits facilitate heat trasfer from the heated water in the SPIM chamber to the tube.