A study of toolmark casting by using polymer for comparison microscope analysis in applied biomedical forensic

The analysis of toolmarks is important in both crime and theft. Usually the analysis of toolmarks is done with another evidence for misdemeanor testify and tool offense to link the tool to an offender. However, due to some evidence have the bigger size too relocate for analyze of toolmarks or have to destructive method. So, for forensic laboratory convenience the casting was used because it is non-destructive method. Normally of forensic casting material is Mikrosil but it too expensive because must be imported. This study was used inexpensive local material that effective equivalent to Mikrosil. This research used three polymer casting products : Mikrosil, silicone and latex to record toolmarks on lock was cuted by plier. The cut marks on three brand locks. The creation of casting materials developmental, silicone products tested were apparent and suffice to forensic analysis compared to Mikrosil. The rubber products tested often found air bubble as a result of this is the toolmarks casting by rubber incomplete and the cast was missed some trace of mark. When the rubber have set not as stable Mikrosil and silicone so the analysis of toolmark be difficult because the plane of marks had wring.