Technical Information – Rainbow Futuron


Rainbow Futuron is damascus composite of various Titanium grades (Gr2, Gr5, Gr7 or Gr9) and Zirconium or Niobium. Our composites are hypoallergenic and corrosion resistant. Titanium composites are low-weighted and suitable for knife handles, knife hardware, jewelry applications, watchmaking, or pen making.

Machining conditions

For proper machining of our composites, it is good to have some skill in machining Titanium. In composition with Zirconium or Niobium, machining is a bit more complicated than with Titanium composite. For unskilled users, we recommend making a sample piece and finding the machining conditions matching their equipment. We don’t recommend cutting (formatting) material on machine shears. We recommend bandsaw cutting, milling or laser or waterjet cutting.

  • Milling – monolithic carbide mill — Vc40 m/min
  • For hard-milling (sizing) with monolithic carbide, mill feed up to Vc60 m/min
  • Milling with VBD mill — Vc40 m/min
  • Lathing with VBD mill — Vc40 m/min
  • Milling with HSS-Co mill — Vc10 m/mind
  • Drilling – HSS-Co drill — Vc6-8 m/min
  • Drilling – PVD coated carbide drill —Vc27-45 m/min


You can grid our steel on all conventional types of grinders. We recommend belt-grinders or Berger grinding machines. For belt grinders, we recommend sanding belts with ceramic grains, like 3M Cubitron II; however, all range of conventional abrasives is usable (for example, SAIT, Klingspor, Norton, VSM, etc.). Always use „fresh“ sharp grinding belts – avoiding of creation of burned surface „crust“, which can make problems when coloring.

Polishing Soft annealing–               Heat the material in a furnace to 820 °C / 150°-               Heat t

You can get slightly different color results when your product is shiny polished or dimmed. We recommend blue Unipol paste for polishing. For dimming, we use excellent ScotchBrite belts or pads.

Heat oxidation

It is the easiest way to get your composite colors. We recommend using a propane butane gas torch and slowly heating the product, starting to reach the first colors. Stop heating when you’ve reached your estimated combinations, and let the product slowly cool down. You can reach the first color at about 430°C up to 850°C / 806-1562 °F.

To reach a dark-black color on Zirconium composite you must heat it up to titanium’s purple. When you need a blue-black combination, you must polish, dim, or etch a purple color from Titanium (black Zirconium will stand still). Now you have a silver-black variety and can make the heat oxidation again (blue is one of the first colors). 

Electro-chemical oxidation

You can also color our material by using a DC electric source. To reach a full spectrum of colors, you need  DC 0-120V. As an electrolyte, use the following solution: 1 liter of distilled water + 5 grams of Trisodium phosphate (Na₃PO₄), known as TSP.  Instead of TSP you can use 10 grams of baking soda; however, you’ll reach better color results with TSP. Like a cathode, use a piece of Titanium sheet. To dive a product into an electrolyte, use a Titanium or Niobium wire. Avoid contact with steel (on a crocodile clip).

  • The resulting color combination is different than when you use heat oxidation.
  • For better color results, use TitanEtch of Multietch as a primer.
  • Using TitanEtch of Multietch, you can remove anodized colors and make other color combinations, especially with black Zirconium.
  • Make testing samples before coloring your final product, especially when combining heat and electrochemical oxidation with the above-mentioned etchants.


    FF Rainbow-Ti / FF Rainbow-Zr

    @futuronforge #RainbowFuturon




    Futuron Forge s.r.o.
    EU – Czech Republic
    Krymská 517/50
    460 06 Liberec 6
    IČ: 08244189
    DIČ: CZ08244189

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