Final answer:
The correct practice when submitting tool mark evidence is to make test cuts or impressions rather than submitting the tool to preserve the evidence's integrity. Submitting a cast is also advisable, along with refraining from collecting material deposited on the tools for accurate forensic analysis.
Step-by-step explanation:
When submitting tool mark evidence for examination, the best practice is to make test cuts or impressions rather than submitting the tool itself. This approach preserves both the tool mark evidence and the tool in their original condition. Test cuts or impressions can be compared with the original evidence without risking alteration of the original marks, and they enable multiple analyses without further damaging the tool or the evidence.
It is not advisable to place the tool against the tool marked evidence as this could potentially damage the evidence. Submitting a cast of the tool mark is also a good practice, as it provides a detailed and three-dimensional replication of the tool mark, allowing for precise comparison and analysis. It is crucial to refrain from collecting samples of any material deposited on the tools, as such material can be essential for forensic analysis in providing additional information about the circumstances of a crime.