What is the method to polish telescope mirror with Ferric Oxide (Red Rouge)? Can I polish without pitch lap?
Sunday, April 18th, 2010 at
5:18 pm
Ques.#1: Will the Ferric Oxide leave the whole mirror surface red ?
Ques.#2: Is there any method to polish telescope mirror without a pitch lap? because I couldnt find the pitch in my area
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No it does not stain the glass red.
You really need the pitch lap.
tough. you need the pitch lap.
ask local telesscope builders what they use. if you can afford to access teh internet, you can afford to ship the right stuff in.
#1: No.
#2: Go to a roofing company or a roofing job, and get some hard roofing asphalt. You can adjust its viscosity with kerosene, beeswax (from a hobby store or Michael’s), or pine tar (from an equestrian tack shop).
Or order some pitch from Newport Glass Works, Willmann-Bell, or GotGrit.