(using 0.6% TPO-L). CAD model, top view and isometric view of (a) solid cubes, (b) hollow cubes and (c) hollow tetrahedrons. (d) Transmittance of samples of molded Sylgard-184 PDMS, freshly printed 3DP-PDMS-S, isopropyl alcohol (IPA) extracted 3DP-PDMS-S print, and Dynasolve M10 extracted 3DP-PDMS-S print. (e) Comparison of the transparency of 4 mm-thick rectangular blocks of PDMS placed over printed text (Calibri 10-pt) and color images – one 3D-printed with 3DP-PDMS-S resin (top) and the other molded with Sylgard-184 (bottom).