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  1. gaufridus

    Hexagonal Hole Drilling- Watts type?

    Rotary broaching (also called wobble broaching in the UK) is readily accessible in the UK. We have some special screws made with hex recesses. I can't remember at the moment who the sub contract company is and I am not in contact with the office for the next couple of weeks. I tracked the...
  2. gaufridus

    With out these there would be pretty much nothing

    Time
  3. gaufridus

    Engine and motor

    Where would a search engine fit in?
  4. gaufridus

    History of the milling machine

    Unclesyd Wadkin DO still exist: go to www.Wadkin.com. They claim to have original drawings for all the machines they ever produced. Good Luck
  5. gaufridus

    History of the milling machine

    Uncle Sid Have you tried researching Wadkin (of Leicester, UK) for your wood milling machine. They were a large producer of woodworking machinery. Although they no longer exist you might find some info on them.
  6. gaufridus

    History of the milling machine

    Greg, Interestingly, in his book "Foundations of Mechanical Accuracy" (1970) Wayne R Moore of the Moore Special Tool Co USA shows an illustration (Page 137 figure 213) of a screw-cutting lathe dating to about 1483. Moore says that this lathe "produced screw threads out of wood and employed a...
  7. gaufridus

    general engineering

    When I learnt technical drawing in the old (paper, pencil, drawing board) days, a scrap section is a partial cross sectional view. In other words it is a cross section showing only the important/relevant detail.
  8. gaufridus

    Hypoid gearing question

    Hypoids, worm gears, etc. have a lot of friction as cessna1 says because the worm rubs against the wheel. This is why they are relatively inefficient and thus why they are difficult to back drive especially at higher ratios. The problem is that with any such gearset if there is any significant...
  9. gaufridus

    Calculator Operations RPN versus DAL

    I bought an HP 19C printing calculator back in the mid 1970's. It was the first RPN that I'd used and took some getting used to but after that I found it preferable to DAL. The reason I bought it was that other calculators, at that time, were just not reliable and I was buying a new one every so...
  10. gaufridus

    Regeneration failure - model is missing

    Thanks Cadcamguy, I must be brain dead today. I had already put some folders in the search.pro and couldn't understand why some of that type of parts were being found but others (the recently created ones) were not.
  11. gaufridus

    Regeneration failure - model is missing

    I am new to ProE Wildfire 2 and have the following problem: I can open an assembly located in one folder I can insert a component (a screw from a family table) from another folder. This seems to work ok and the component is placed. When I reopen the assembly at a later time/date, I get the...
  12. gaufridus

    Worst Interview Experiences

    I was sponsored at university by a company; in return I worked for them during vacations and undertook to work for them for a set period after I had graduated. This was the first time that the company had done this kind of thing and there were two of us involved although we were from different...
  13. gaufridus

    Casting different metals - same pattern

    I am anticipating a situation that may arise. I am designing a component that is to be sand cast in, say, Aluminium alloy but there may, in the future, be a requirement for the same component in Cast Iron(for the sake of argument lets ignore the actual grades of material). If we ignore the...
  14. gaufridus

    binding Au to stainless steel

    I read somewhere, some years ago (say 10+) of a technique called "explosive bonding" where Al sheet was "joined" to a parent metal by holding/clamping the two pieces slightly apart over a container. An explosive charge in the container forced the Al to close bond with the parent metal. I don't...
  15. gaufridus

    HP 9100A? Anyone?

    Have you tried: http://www.hpmuseum.org/ They have a section on items for sale Good luck in your search
  16. gaufridus

    Ever feel like you're in over your head?

    Some thirty years ago I joined a fledgling company as their first and only design engineer. The owner would take on any job/contract that he could lay his hands on - anything from missile test rigs to machines for mining coal, archery arrows to air bearings. The number of times I felt completely...
  17. gaufridus

    Selection of graph area for hatching

    I raised a similar question a few weeks ago in this forum - see thread 770-150402. I think that you will find all the answers you need in the specified links.
  18. gaufridus

    E-drawings

    I installed the free Edrawing publisher some time ago and it worked fine - then it time expired. When I tried to install it again - it would not install the publisher (and the associated icon) because of the first (expired) installation. In other words you can't continually (re)install the free...
  19. gaufridus

    Victorian Engineering Brilliance - Do We Still Have It Today?

    Its no longer Victorian Engineering Brilliance, its the 21st century and the world is more complicated. IKB was brilliant at a wide base of subjects and pushed back a lot of boundaries - yes for sure. Today, however, how would he get on? The depth of knowledge required for a single subject is...
  20. gaufridus

    Shaded area under a curve

    I don't think that an area chart would suit, the problem is that my chart has two curves: The Y axis shows positive values and negative values. The Y axis runs from -5 to +5 with the x axis starting at zero on the Y axis. X axis values run from 0 to 200. I have plotted two curves - one is a...

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