How to Polish Stone

Core steps:

1. • • Choose sanding belt**
       -Rough grinding (80-120 mesh): Processing the surface of the blank
       -Medium grinding (200-400 mesh): eliminates coarse grinding marks
       -Fine grinding (600-1500 mesh): preparatory polishing
       -Polishing (3000 mesh+): If you need a mirror effect
2. • • Operation process**

A [Fixed Stone] -->B [Rough Grinding to Remove Defects]
B -->C [Medium Grinding Leveling]
C -->D [Fine Grinding and Refinement]
D -->E [Wet throwing cooling and dust prevention]

3. • • Key Attention**
       -Continuously moving the sand belt to avoid local overheating
       -Granite/marble requires water to prevent bursting
       -Caution should be exercised when using high-speed equipment for soft rocks such as shale

How to Polish Anodized Aluminum

Special handling principle:

1. • • Prohibit rough grinding (to prevent penetration of the oxide layer)**
       -Starting particle size ≥ 600 mesh
       -Final polishing with ultra-fine fiber wheel and grinding paste

2. Layered polishing technique**	Steps	Tools/Materials	Functions
   Surface cleaning	Isopropanol+non-woven fabric	Remove oil stains
   Fine polishing	1500 mesh sponge sand belt	Eliminate minor scratches
   Mirror treatment	White polishing paste+cloth wheel	Restore metallic luster (without damaging the oxide layer)

3. • • Taboos**
       -Strictly prohibit steel wire wheels/hard grinding tools
       -Surface temperature ≤ 60 ℃ (overheating will cause cracking of the oxide layer)

General Safety Guidelines:

+Must wear: dust mask+goggles+cut resistant gloves
Soft material (aluminum/marble) pressure<5kg, hard material (granite)<8kg
-Prohibit wearing gloves to operate rotating parts

• • Technical Tip : Anodized aluminum polishing is essentially "oxide layer modification", excessive grinding will expose the base metal. After polishing natural stones, protective agents (such as permeable fluorine resin) should be applied to enhance durability.

This framework is suitable for the modification of angle grinders into sanding machines or professional sanding equipment. Micro desktop devices require a proportional reduction in operating intensity.