In a quest to upgrade to a Tungsten bucking bar I came across a "1 Inch Tungsten Cube" on amazon for $55.99 (https://www.amazon.com/Tungsten-Col...strial&sprefix=tungsten,industrial,140&sr=1-9) it appears to be for classroom use, but Tungsten is Tungsten right? Does anyone have any experience utilizing/ repurposing these or similar for aircraft use?