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forteh last won the day on August 15

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About forteh

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    Ed Emuss
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  1. Spiral I reckon is from withdrawing a jammed tool, something bound onto the cutting edge of the drill (diamond) and created the spiral whilst withdrawing it; you could possibly achieve that feed rate cutting into plasterciene or butter As raised above, there doesn't seem to be an abundance of spiral grooved cores so I suspect it to be an anomaly that can be jumped on to try to cast doubt. Holes drilling into the tangent corners could be tube drills driven by a short crank, progress would be slower due to reduced possible torque that can be applied but still feasible. The grinding/wearing action of the tube drills wouldn't require high torque compared to cutting the stone (as a modern tip tool does in metals), just a consistent motion.
  2. 188m high, 1200 tonne load capacity enough?
  3. I think with modern houses, it's a question as to in what state they'll be in 40-50 years time. Our sister company manufactures architectural fibreglass (dummy chimney stacks, dormer windows, door canopies etc.) and I've been on many modern house building sites and the amound of chipboard used is astonishing. Not to mention the amount of bodges and general lack of following drawings. They'll probably be fine, but they're all made to a price point and for speed of construction. The topic is waaaay over there =============>
  4. I think a lot can be attributed to the phenomenal ingenuity and intelligence of the human mind and the will to achieve something. Just because the people were alive a couple of thousand years ago doesn't mean that they were certain individuals that were any less intelligent than modern day genius's; certainly the general populace would be less well educated than modern times but that's a very recent development. Think back to the greeks, they mapped the stars using relatively simple tools and observation, we have now surpassed their level of astronomy massively but they were the bleeding edge of wisdom in their age. Likewise the capacity for someone to develop a rope/winch system for dragging rocks up hills/ramps isn't difficult to imagine, it only really needs to be designed once and then repeated. The Peruvian bobbly walls (can't recall their true names) are really nicely made and yes would require a good skilled team over a few years, but skills are easily taught and replicated. It's also not like there are entire cities constructed using these very labour intensive methods, they're more of a statement of capability. There are distinct similarities between some of the Egyptian and Peruvian stonework, what's saying that the Egyptians didn't travel the oceans, landing in Peru; they had ships so what's stopping them exploring. If there are engineers onboard then they can start construction and training local workforce. All theory with no substantiation of course.
  5. All of this talk of copper tools is arse, I've just spent two minutes reading and the Egyptians had bronze tooling when the great pyramid was built and had done so for hundreds of years, they were also possibly smelting iron at the time. Bronze is far harder than copper and in some cases iron; changing the alloying elements can also dramatically alter the characteristics. Within that two minutes of reading I also gleaned that they were somewhat good at the whole metallurgy thing so them having decent tooling is perfectly reasonable. Considering the arguement that work in later centuries wasn't so good? Perhaps the focus was elsewhere, like developing cities and infrastructure rather than enormous dick waving mausoleums (even if they're massively impressive!). Maybe mr dick waving mausoleum builder from the later centuries was a bean counter and decided that he could get it built for less money, paid less money and then realised that the product was inferior. Funnily enough that still happens now In my opinion there are plenty of logical explanations of how things were/could be built and I don't believe that the pyramids were built by anyone/thing other than a lot of ingenuity and a silly amount of labour force. From the creators of the videos I've seen (admittedly a fairly small sample), there seems to be a fairly uniform theme running through them "give us lots of money and we'll take you on a missguided tour of an old construction that might have been built by forces unknown but in reality people", coincidentally they all appear to be Americans * * No offence intended to any Americans reading this, I know you're not all nutters
  6. I would have said no, wood is a relatively soft material and easily fashioned by simple hand tools, a hardened steel chisel is obviously going to last longer than a hardened copper one before it needs resharpening but it will still do the job. I gave a modern method of achieving the desired shape with simple machining techniques as a comparison to how it could be recreated now. If you consider a milling machine is only a rotating vertical spindle cutter (for the large part, simplified obviously) to construct a vertical rotating spindle isn't too difficult to achieve. Bearings constructed from oak with copper shells and lubricated with oil/grease are perfectly acceptable (indeed wooden/iron journal bearings were used quite extensively in the past) for the load and speeds involved. The Egyptians had the technology to shape and joint wood so constructing a wooden chassis to hold the spindle isn't too far fetched. Drive the spindle from a crank/belt/lever arrangement and a few men could keep that cutter spinning for hours at a time. Think of it as a giant temporary rotabroach but without the electromagnet bit of course. As to there not being and evidence of them? I guess that once used and fulfilled it's purpose the frame would be stripped for firewood. Think of how many wood block sledges would have been made (hundreds of thousands) yet there aren't that many around now; either rotted away or broken up and burnt. Are there existing records of such a device being used? I don't know. I know that there is examples of documented use of water/sand slurry being used as a sledge lubricant for shifting the blocks, however I would hazard a guess that the number of such circular bored holes was insignificant compared to the huge undertaking of shifting the blocks into place and as such probably not that high on the list of stuff to paint on temple walls. Perhaps it was recorded on papyrus and has since been lost to tomb raiders or simply not survived the last couple of thousand years.
  7. No one has told me how they were made, that's just how it could be done. You asked how it could be done, I told you a method based on my own experience, knowledge and understanding of the problem. Perhaps still it was those ancient lost technology lasers!
  8. I'm one of those crazies
  9. If that's the case then a copper tube drill would still achieve the cut, copper work hardens and such a tube drill would certainly be hand worked to make it. Introduce a cutting medium and you would do what you're saying has happened through abrasion rather then cutting. Yes the cutters will wear down but it's a consumable and a new one would be made to suit, any remaining copper from worn cutters would be resmelted. Work ethic doesn't apply when you're working under the whip for the person/god figure that you worship
  10. That's more like it In the current era (discounting multiple axis cnc machinery): - You want a circular hole to be square bottomed (to properly support an inserted dowel), this isn't possible with a conventional fluted drill, the only way to achieve this is with a flat bottomed cutter such as a slot drill. The circular rebate would be milled using a dividing head and a T slot cutter. The axial grooves could be cut with a little ingenious use of a shaper or a broach. In a previous era: - Rough the hole out using a rotating rope arbour (as I mentioned above) to the nominal dimensions then use a copper tube saw to cut the last few mm (or slightly undercut in this example) to achieve your square internal corner. The rebate would be made in much the same way as with current machine tools, except instead of rotating the workpiece on a dividing head have the vertical arbor on an adjustable eccentric - cut out to the right diameter and then rotate the eccentric. Obviously the depths of the cuts would have to suit the cutting tools available but that's only a case of time and repeating the same operation. Rough out with rope and slurry then take a finishing cut with copper edged tooling. Either way it's just basic principles of pocket machining. The axial grooves are easily put in with either a reciprocating wood/slurry tool or chiselled out (which I suspect is far more likely).
  11. It's not meant to impress you, just some evidence that I am infact technically minded despite what you might think (having never met me). I will happily admit that I'm not particularly academic and that there are people far more intelligent than myself. I've seen rope cut iron, I would love to hear your technically informed opinion on how to do it rather than regurgitating youtube videos
  12. I've been working on machine tools from 6 years old, started technical drawing at 10, rebuilding engines from 11, 20 years working part time on victorian fairground ride, degree in mechanical engineering and almost 19 years as a mechanical design engineer cleaning your shit (sewage treatment for what it's worth). Not technically minded at all.
  13. Copper/wooden disk, edged with rope run in slurry. Come on, work harder than that. Look inside your box, all the answers are there....
  14. Rope cutting is a perfectly logical explanation as to how the stones were cut, add a slurry of sand and water, put 10 men on each end and have them pull either way. Hey presto a long, straight, accurate cut. Circular cuts would be done in the same way, wrap rope around a vertical arbor till you have the right diameter, add slurry, add slaves, rinse, repeat. To say that we know nothing of rope cutting stone is bollocks. Large and accurate is no issue when you have a rope 100 foot long and how can you quantify what feed rates they used (astonishing or otherwise)? Perhaps I shouldn't have said that they would have rotted away, more accurately they would have worn away and a new section length of rope then used. Moving the stones around was by boat and and sledge/water/sand, plenty of evidence already for this. Lifting the stones up the pyramid was via temporary ramps, examples of the type of block and wall construction are at Giza.
  15. That's probably because the hemp ropes and wooden frames used to cut the stones would have rotted away; stop thinking everything was cut using copper chisels, that's a closed minded view on it in my opinion