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Degussit Ruby Stones, Fine
Degussit Ruby Stones, Fine


 
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Gesswein Ruby Stones and Files are made by Friatec-Degussit from pure, sintered crystals of synthetic ruby. No bonding material is used, so these stones are extremely hard and resistant to changes in shape. This is particularly important for quality precision grinding and finishing.

In addition, since Gesswein Ruby Stones have an 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. Ruby stones are also recommended for use on materials such as glass, quartz and porcelain.

All are fine grit in a variety of shapes & sizes.


Shape Inch Dimensions mm Dimensions*
A. Triangular 4" x 5/16" 100 x 8mm
4" x 3/8" 100 x 10mm
B. Square 4" x 5/16" 100 x 8mm
4" x 3/8" 100 x 10mm
4-3/4" x 1/2" 120 x 13mm
C. Round Pointed 4" x 3/16" 100 x 4mm
D. Round 4" x 3/16" 100 x 5mm
4" x 5/16" 100 x 8mm
4" x 3/8" 100 x 10mm
E. Flat 4" x 1/4" x 1/8" 100 x 6 x 3mm
4" x 5/16" x 1/4" 100 x 8 x6mm
F. Half-Round Available in Medium & Coarse only. Refer to Medium or Coarse page.
G. Rhomboid Available in Coarse only. Refer to Coarse page.
H. Round Tapered 4" x 3/16" x 3/32" 100 x 30 x 7>2mm
I. Knife 4" x 5/8" x 1/8" 100 x 15 x 3>0.5mm
*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. Jewellers use them for sharpening of carbide and high speed steel engravers and other tools.


Item# Item Name Our Price Qty Add
350-2203 Degussit Ruby Stones, Fine (Flat, 4 x 1/4 x 1/8")
$86.94
350-2213 Degussit Ruby Stones, Fine (Flat, 4 x 5/16 x 1/4")
$122.83
350-2913 Degussit Ruby Stones, Fine (Knife, 4 x 5/8 x 1/8")
$206.49
350-2613 Degussit Ruby Stones, Fine (Round Pointed, 4 x 3/16")
$64.54
350-2553 Degussit Ruby Stones, Fine (Round Tapered, 4 x 3/16 x 3/32")
$96.26
350-2703 Degussit Ruby Stones, Fine (Round, 4 x 3/16")
$106.77
350-2733 Degussit Ruby Stones, Fine (Round, 4 x 3/8")
$146.36
350-2723 Degussit Ruby Stones, Fine (Round, 4 x 5/16")
$131.79
350-2133 Degussit Ruby Stones, Fine (Square, 4 x 3/8")
$160.30
350-2123 Degussit Ruby Stones, Fine (Square, 4 x 5/16")
$140.50
350-2143 Degussit Ruby Stones, Fine (Square, 4-3/4 x 1/2")
$200.39
350-2033 Degussit Ruby Stones, Fine (Triangular, 4 x 3/8")
$181.28
350-2023 Degussit Ruby Stones, Fine (Triangular, 4 x 5/16")
$159.29
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Instructions:
Thesefine grinding stones are made of Degussit DD57 (sintered ruby) which is a homogenous mixed-crystal material. The main element is aluminum oxide. The characteristic red colour is the result of an admixture of chromium oxide.

Because Degussit DD57 is a homogenous ceramic material which is bondfree, these stones cannot be classified in terms of "grit" but only in terms of the average grain size. The average grain size of types "fine" and "medium" is about 10µ. Type "coarse" has two average grain sizes at about 10µ and 100µ.

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.
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