Cylinder Honing

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  • Precision finish of a cylinder bore
  • Honing may be considered a self-truing grinding process - [1]

Other Means to Bore Finishing

  • Dedicated machines and cutters can also be used (boring machines), but the boring bit can also be mounted on a mill - [2]
  • Drilling - good for only 10 mil in 1" or larger drills - [3]
  • Milling holes - 1 mil with a boring bar [4], from Practical Machinist - [5]

Seamless Tube, Seamed, and DOM

  • DOM has a seam, so it's not seamless. It is processed over a mandrel to hide seam.
  • Seamless is actually extruded - a seam is never formed
  • Seamed is welded
  • DOM is welded then drawn over a mandrel
  • This supplier uses DOM and seamless for hydraulic cylinders - [6]