Degussit Ruby Midget Files, 100mm

$19.50 - $31.95
1 - 9
10 +
Total ---
Ruby Midget Files are invaluable for high detail and ultra-precision work. They may be broken off and cemented onto a holder or used with a pin vise. Available in fine grit.

Shape mm Dimensions Inch Equivalent
Square 100 x 2mm 4" x 0.08"
Round 2mm 100 x 2mm 4" x 0.08"
Round 3mm 100 x 3mm 4" x 0.12"
Half-Round 100 x 4 x 2 mm 4" x 0.16" x 0.08"
Barrette 100 x 5 x 1.5mm 4" x 0.2" x 0.06"
Crossing 100 x 4 x 1.5mm 4" x 0.16" x 0.075"
Triangular 100 x 3mm 4" x 0.12"

*All dimensions have tolerance of ±0.1mm.

Ruby Stones are the ideal choice for deburring, blending, dressing, and fine polishing of molds & dies made of hard metals such as hardened tool steel, carbide and surgical stainless steel. Jewelers use them for sharpening of carbide and high speed steel engravers and other tools.

Mold & Die Applications:
  • Use in an Ultrasonic Handpiece for fast deburring and blending. (Ruby Stones cut faster than our very popular Super Ceramic Stones.)
  • Deburring ejector pin holes.
  • General deburring and edge breaking on mold steel and carbide.
  • Blending a surface where a straight edge meets a radius.
  • Polishing highly detailed areas on dies (after dressing Ruby Stone to a fine point).
  • Polishing ribs and other hard to reach areas.
Medical Instruments:
  • Fine polishing of surgical stainless steel instruments.
Jewelers and Engravers:
  • Polishing and shaping of carbide & high speed steel gravers.
Find these items on these pages in our catalog:
  • 029
    Made in Germany from pure, sintered crystals of synthetic ruby. No bonding material is used, so these stones and files are extremely hard and resistant to changes in shape. This is particularly important for quality precision grinding and finishing.

    In addition, since Degussit Ruby Stones and Files feature outstanding resistance to wear, they are more economical to use than other comparable tools.

    Use dry or with Gesswein Stoning Oil to grind, touch up or debur steel and carbide parts. Also recommended for use on materials such as glass, quartz and porcelain.