I. Situations Where Cleaning Is Required at First Sight
Visible accumulation of dust and metal powder on the surface
Especially powder ulation near guides, edges, and threaded holes indicates that heat dissipation and precision have been affected.
Traces of oil stains, cutting fluid, or coolant
The presence ol films, oil spots, or water marks will attract dust to form sludge, which will seep into the micro-pores of the stone over time.
The precision working surface appears ull, sticky, or rough to the touch
A normal granite precision surface should be clean and smooth; stickiness indicates residual oil stains.
Color differences, or localized blackening or yeowing
Mostly caused by long-term oil penetration; if not cleaned, it will become increasingly difficult to treat.
Clumps of dirt at edges and seams
Cured chips, adhesive rdues, and sludge easily harbor dirt and generate local stress.
II. Situations Where Cleaning Is Required Upon Touch
A gritty or sandpaper-like feel upon touch
Indicates the prese metal chips or dust, which will wear down mating surfaces and affect precision.
A sticky or dragging sensation when fingers are drawn across the surface
The grease has deteriorated and musbe cleaned.
The cloth becomes noticeably black or dirty after wiping
Even if it does not look dirty to the naked eye, this indicates that the cleaning threshold has been reached.
Judging the Need for Cleaning Based on Equipment Condition
Increased fluctuation in equipment precision
Such as unstable flatness or straightness, which is often caused by accumulated dirt on the bauneven local stress.
Severe dirt around leveling feet and support points
Dirt can elevate or suspend the feet, causing abnormal stress.
High environmental dust and heavy cutting
Eve it does not look dirty, regular weekly cleaning is recommended to prevent micro-powder infiltration.
IV. Simple Judgment Standards (Can Be Used as Workshop Norms)
Daily Light Cleaning: Visuaction before leaving work; wipe immediately if floating dust is present.
Deep Cleaning:
Surface has oil films or sludge
Wiping cloth becomes obviously dirty
Left uncleand for over 1 week
Slight fluctuations in precision
If any of the above conditions are met, a thorough cleaning is required.
V. Special Reminder (For Precision Equipment)
A gra base is not more durable the dirtier it is. Once micro-pores are blocked by oil stains and metal powder, it will lead to:
Decreased dimensional stability
Local micro-n
Difficulty in re-measuring and recalibrating precision
Therefore, it is better to wipe frequently rather than wait until the dirt is obvious befo
