Again, the testing is not foolproof.Oswald was given two separate types of tests to detect gun powder residue on his hands and cheeks.The test that you're referring to would produce some false positives and false negatives.
The presence or lack thereof is not conclusive evidence.
Both were negative. Summary of Results from Oswald's Paraffin Tests
It is also addressed in the Warren Commission Report.
No. Oswald denied carrying anything but his lunch. Why would he bring curtain rods to work? Did Lee Harvey Oswald Carry Curtain Rods? : The JFK AssassinationPS: Did anyone ever find the curtain rods in the TSBD? I imagine you have some evidence where they found them.... your move.
That is what Buell Frazier reported that Oswald said was in the large brown wrapper he was carrying; the same wrapper the was found in the TSBD. Your stance does put you into the unenviable position of having to then explain why someone else brought Oswald’s rifle to his workplace. Have fun.
When you argue with lying trolls, it's good to not accept their versions without verification.
"During the course of the interrogation of Lee Harvey Oswald following the assassination a paraffin test was performed by the Dallas police on both of his hands and his right cheek. The paraffin cast of Oswald's hands reacted positively to the test. The cast of the right cheek showed no reaction.
To perform the paraffin test, layers of warm liquid paraffin, inter-leaved with layers of gauze for reinforcement, are brushed or poured on the suspect's skin. The warm sticky paraffin opens the skin's pores and picks up any dirt and foreign material present at the surface. When the paraffin cools and hardens it forms a cast, which is taken off and processed with diphenylamine or diphenyl- "
Appendix 10