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Glassmaster 3000, 100g Best Quality Cerium Oxide Glass Polish

Starting at: AUD $17.50

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Glassmaster 3000 Cerium Oxide Glass Polish - specially formulated for the glass industry for fast mirror-finish results on all glass production and repairs.

One great use for cerium oxide is polishing out light glass scratches or removing Graffiti and oxidation and the process is quite simple.  This item contains 100 grams of Premium Grade Cerium Oxide packaged in a strong screw top plastic jar.

This item is Superior Cerium Oxide with added water suspension ability to keep it mixed with water - suitable for most glass jobs:  99% purity, 2.2µ.  

Recommended application method - soft felt buff.
First you need to determine how deep the scratches are - if you can feel the scratch when you run your fingernail over the area, it is likely to be too deep to polish out easily.  In these cases, you will need to grind it down before polishing (and we recommend professional help in these cases).  If the area feels smooth, you can go straight to polishing.


You will need:

  • some cerium oxide powder for the polishing (included in this item)
  • a polishing pad (suggest soft calico, lambswool, felt or leather) mounted on a backing disc or wheel
  • low speed drill (1500 rpm or less) to use with the polishing pad - polishing too fast will generate excessive heat and may crack the glass.
  • a marking crayon or masking tape to mark the inside of the glass (use this to guide you when polishing)
  • a cleaning cloth to wipe and allow inspection of the work area
  • small spray bottle - use to apply mixture to glass and keep moist while polishing

How to Polish

  1. Mix some polish into water to a form a thin slurry (eg. milk-like consistency) - we suggest mixing in a small spray bottle which can be used to apply to polishing pad.  Some people prefer a thin paste.  Test which consistency you prefer.
  2. Clean glass thoroughly to remove all traces of dirt and grease
  3. Apply polish mixture to the polishing pad
  4. Mark the inside of the glass with the crayon/tape to identify the area to be worked
  5. Mount pad/wheel in the drill and apply to work area.
  6. Move pad up and down, left and right in work area.
  7. NB:  Keep the surface wet to prevent glass getting too hot - if sufficient polish has already been applied, then just spray a fine mist of water to keep the area cool.
  8. Wipe off residue and inspect repair - keep working until polish is satisfactory
  9. Wash and store pad for later use

IMPORTANT - some heat assists the polishing action but do NOT let the glass get too hot while buffing - keep cool by spraying with water and keep the buffing pad moving continuously.
Deep Scratches
If the scratch can be felt with a fingernail, it is probably too deep to remove by polishing alone.  You will need to grind out the scratch with progressively finer grit.  This is a more specialised (and tedious!) job and it may be best to seek the advice of professionals in these cases.

For valuable pieces, please seek professional advice before attempting a DIY repair. Aussie Sapphire will not be responsible for damage caused by untrained users.

NOTE:  Some glaziers will call this product "jewellers rouge" - this is a misleading name as jewellers rouge is actually iron oxide and bright red in colour.  Usually they will actually be referring to cerium oxide - a "peach" coloured powder which is particularly well suited to glass work.  If you want to clean or polish glass - you will normally need to use cerium oxide, NOT iron oxide.



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