Reblueing Unertl Scope?

SP45

May 24, 2015 11:36

Has anyone black oxided a unertl scope. If so with what results. I am a little concerned about the rib coming loose.

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  Ray Boone

  May 24, 2015 16:05

  I have a few Unertls but the idea of reblueing them hasn't occurred to me. everyone that I knew at Unertls has passed away, so I don't know where you'd go to ask. :<(

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  yoshmyster

  May 25, 2015 04:06

  Cheaper to just rattle can it.
  
  I recall US Optics was doing repair works for Unertl a while back. I don't know if it was just for the military, though.

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  nmyers

  May 25, 2015 04:31

  I may be the last person in the world to have a scope professionally reblued:
  
  
  
  The scope technician had to take everything apart, send the steel parts to a gunsmith to be refinished, then reassemble the entire scope. He returned it to me, then went out of business.
  
  I think yosh is right; unless you have a rare variant (like the USMC model), spray paint is worth considering.
  
  Neal

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  babun

  May 25, 2015 04:37

  Black oxide is done at about 285 degrees. It is SUPPOSED to be safe for silver soldered joints. But I think you may be pushing it a little close.
  Have you looked into cold black oxide??
  
  """"Cold black oxide is applied at room temperature. It is not an oxide conversion coating, but rather a deposited copper selenium compound. Cold black oxide offers higher productivity and is convenient for in-house blackening. This coating produces a similar color to the one the oxide conversion does, but tends to rub off easily and offers less abrasion resistance. The application of oil, wax, or lacquer brings the corrosion resistance up to par with the hot and mid-temperature. One application for cold black oxide process would be in tooling and architectural finishing on steel (patina for steel)"""

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  chiefr

  May 26, 2015 06:43

  Yep, they can be blued, but total disassembly is required.

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