Glass Polish - supplied extensively to the glass industry as a polishing agent and to remove Graffiti
One great use for cerium oxide is polishing out glass scratches or removing Graffiti and the process is quite simple. This item contains 250 grams of Cerium Oxide glass polish which is ample for most small jobs.
This item is Standard (peach coloured) Cerium Oxide - suitable for most glass jobs. Packaged in one plastic screw-top jar.
A) You may choose to add a small 5" lambswool polishing buff which can be simply inserted into a cordless power drill. Select the first option above if you need a polishing buff.
B) Alternatively, you can choose a 5" rubber backer with velcro felt pad - these backers have M14 thread for use with wet polishers - add the M14/6mm adaptor if you want to use this one in a drill.
PROCEDURE FOR REMOVING SCRATCHES ON GLASS:
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
- 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.
- Clean glass thoroughly to remove all traces of dirt and grease
- Apply polish mixture to the polishing pad
- Mark the inside of the glass with the crayon/tape to identify the area to be worked
- Mount pad/wheel in the drill and apply to work area.
- Move pad up and down, left and right in work area.
- NB: Keep the surface wet to prevent glass getting hot - if sufficient polish has already been applied, then just spray a fine mist of water to keep the area cool.
- Wipe off residue and inspect repair - keep working until polish is satisfactory
- Wash and store pad for later use
IMPORTANT - do NOT let the glass get too hot while buffing - the glass should get warm for best results but not too hot - control excessive temperature by spraying with water and keep the buffing pad moving continuously.
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: we sell cerium oxide in 250g packs with discounts applying for larger quantities. For small jobs, 250g should be plenty. See the link below:
CERIUM OXIDE POLISH
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.