Recent content by be unique

If you said "Pre-Columbus Amerindians didn't have horses so they must have ridden on buffalo" I would disagree. If you say "there were no steel swords so wood is steel" I would disagree. I understand your guesses but where are the facts? Pig head is cheap , you can cleave , slice , splinter...

"Dr Michael Westaway I didn't expect the carbon dates to be anything like that. I thought they were going to be very modern. And the carbon dates suggest no, it's 700 years old. That means that there are weapons being used by people in western New South Wales that are creating signatures that...

The proof is the detailed discussion in the doco , Cambridge article and NY Times arguing how wood is really steel. If it was so then a pic of such weapons and comment "this was used to cut skulls" would be enough . No discussion. Same with your long involved guesswork. All the responses were...

The elder's quote is from doco narration text - 700 years. "A blade" means ...what? If mulga wood sliced bone why did he say "something is wrong" ? He should have said , "Yeah we made blades that zapped a dudes block off".

So we can take it that you have never seen boomerang cut bone? Our major problem is density: Iron is 7 tons cu/m, mulga is 1 ton. Hot air will never give the same strength to wood which is made of wood. "The period during which the keris buda, and its immediate predecessor, came into being was...

You were doing but where did you see boomerang cut bone? There are many examples of swords slicing skull in Google. Richard III of England is shown and the forensic archaeologist there says someone has questions to answer about Kaakutja. I've given examples of tests of boomerang , sharpened to...

Centuries later this Indonesian knife was painted in North Australia. About 200 Indonesian loan-words exist there and there seem to be words in southern Australia from Old Java language , 800-1300 AD. The skull is dated 1200s...

"It is not anticipated that a wooden chisel would meet the relevant requirements related to compliance with the essential principles and as such not be marketed promoted or supplied for use as a medical device. Kind regards Medical Devices Branch Therapeutic Goods Administration Department of...

Why do you say it's not sliced ? slice:"a thin, broad piece ". The entry , floor and exit walls are smooth , not "blasted chunk". The issue is not about modern chisels but how bone reacts . A pigskull is about 1mm thicker than human frontal cortical and is used to replicate shock damage for...

Hi Steelwolf, >They have more the appearance of fast, light impact without the 'carry through' that a dense metal blade would have had, especially in that area for a cut and the fact that there are no other 'cut' marks on any of the bones, especially lower arm defensive wounds. The article...

Here are some comments on the response of bone to force: A technique of percutaneous multidrilling osteotomy for limb lengthening and deformity correction. Yasui N1, Nakase T, Kawabata H, Shibata T, Helland P, Ochi T. The bone is drilled percutaneously, using a special drill guide, and...

Kaakutja shows the inner cortical plate with smooth surface. The blade must have been across the trabeculae, between the plates. If it was thicker than 2mm then it would cause random cracking, not smooth surface. That is why Braun make 2mm thick surgical chisels . Bone anatomy is not optional...

Baluncore, A heavy kylie is robust but my mulga boomerang weighs 520g , my machete is 580g and Indonesian keris swords are reportedly 300-600g. A kylie is lethal but sharp mulga blades can't fit between cortical plates. The final comment here is interesting...

Jim "You need to show that the force required to sever the required bone thickness can never be generated by a hunting boomerang ". That's an odd thought . A brick can strike bone but doesn't generate force , the brick-thrower does that. In post#1 the Janke hardness is noted and mulga is...

When 5mm thick at 10mm back from edge , a boomerang has edge-angle of 30degrees and at 10mm thick it is 60 degrees ( plus the bi-convex curve).