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  1. J

    Build my own milling machine

    Some of the math I been doing which is 35 (sfm). My speed should be 28 rpm. But that depends on the type of metal being milled. That's a lot of pulley changing. I have a auto-transformer. But I think I going to have to hook up some type of tachometer. What about vertical mill's they run at...
  2. J

    Build my own milling machine

    Looks like I need to get that book. The large blade I have is 6 to 8 in. The blade you see in the pic is 5" the I dulled was 6" But I seen slitting blades on here look like it was ran above 1750 rpm.
  3. J

    Build my own milling machine

    The smallest pulley on the motor is 1"in" the spindle shaft pulley is 3 "in" making the cutting tool rpm to only 583. The motor run's at 1750. So that should be slow enough for the tool.
  4. J

    Build my own milling machine

    This is what I built. The only problem I have had was dulling the blade on steel which is funny considering it is a HHS blade. The one thing I didn't know was the support arm was to be solid steel bar. The knee adjustment was an old screw jack inverted and welded in place also making sure it was...
  5. J

    Build my own milling machine

    I have a sears craftsman lathe from the 60's 6in beautiful machine. And a Harbor freight lathe from China "junk" I have to be constantly working on it to keep it going! I built my own horizontal mill from two heavy channel iron. The first thing you have to do is make sure it is very square at...
  6. J

    Home-made collet chuck and collets - some Q's

    What does this (With regards to holding long lengths in a collet Smart & Brown lathes used a system that had a tubular draw bar to close the collet via a hand wheel on the end of it, I seem to remember it having about a 1" bore but I don't recall the taper. (it was 50 years ago) have to do with...
  7. J

    Home-made collet chuck and collets - some Q's

    What pic's? All I get is a pic icon with an X over it.
  8. J

    Propane ribbon burner hot enough to melt pig iron?

    Right now I am melting Aluminum and building steam engines. I want to work my way up to steel but for that I need to make a new furnace the one I have now won't last long at those temp's. My clay crucible has crack in it but it seems to still be able to work. I remember in high school the...
  9. J

    Propane ribbon burner hot enough to melt pig iron?

    I am around 10 to 15 psi. I might have to back that down or open the orifice a little. I have a number 19kg and 24kg crucible but there graphite/clay you're the same?
  10. J

    Propane ribbon burner hot enough to melt pig iron?

    I used a number 60 drill bit on my burner and it seems to small. I don't get the constant wore but a pulsating sound. And what type of crucible are you using?
  11. J

    Sideshaft i.c. Horizontal engine

    Where did you get the broaching tool?
  12. J

    Propane ribbon burner hot enough to melt pig iron?

    You're right air matters. And the more pure the oxygen "which you are using" the hotter
  13. J

    Welding a copper boiler?

    Look at Keith Appleton video's on YouTube. You'll see allot on steam boilers. How their made, their working pressure and what kind there are. ex sample one is heated by rubbing alcohol. Silver soldering and repairing them. He even show one that been riveted but I don't think he did it. There's...
  14. J

    Piston vs Cylinder wall.

    The .005 is from a machinist friend. but we were talking about steam engine at the time. like I said this will be my first engine. Like the Right brothers a lot of trial and error.
  15. J

    Piston vs Cylinder wall.

    I was thinking to have my cylinder wall 1/16 of an inch or .060 this would be my minimum. So the bore .050. the piston .005 under the bore. And the wall of the cylinder .060 But this would be my first engine. Aluminum piston you have to give for expansion.
  16. J

    Piston vs Cylinder wall.

    I ask the question to insure that I don't go under it.
  17. J

    Piston vs Cylinder wall.

    Piston and cylinder are made out of steel. fuel will be gas or nitro methane.
  18. J

    Piston vs Cylinder wall.

    Any one know what the bear minim would be needed on a cylinder "WALL" to a given piston size like 1/2 inch.
  19. J

    Forrest Edwards radial 5

    If so ingenious. Why only one flight with the glow plug set up then have to do a battery recharge? The point was made.
  20. J

    Forrest Edwards radial 5

    I see where the intake manifold is. I bet it is fuel injection the engine looks new. But I am wondering if he is using a crank position censer?
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