Can You Use Granite As A Surface Plate

Downgrading resurfacing or replacement levels.

Can you use granite as a surface plate.

Surface plates can be made up of. Signs of wear chipping or warping can happen to a surface plate over time. Granite surface plates are best known for the rustless surface plates. Choose from our selection of surface plates including granite flat surface plates stands for granite flat surface plates and more.

You can generally expect a used surface plate to show some cosmetic damage but it should still function properly. Avoid overload overloading can cause accuracy issues and may even cause serious damage. Use surface plates for intended use only when the surface plate is not in use place a protective cover over it. The hardness of the granite surface plates is more than the c i surface plates.

During recalibration the surface plates that deviate from work surface flatness tolerance have to be downgraded resurfaced or replaced. If you have a reference surface you use either spotting compound or artists oil paint thinned a little with wd40 to indicate high spots on the granite and then use the diamond plate hone to take down the high spots. The surface plate is often used as the baseline for all measurements to a workpiece therefore one primary surface is finished extremely flat with tolerances below 11 5 μm or 0 0115 mm per 2960 mm for a grade 0 plate. If you know you have a lump somewhere you can use an inexpensive plated diamond hone to take the area down.

Granite surface plates are able to unaffected with the temperature changes and heat so that it can maintain the flatness for longer life. Granite is also a very porous material so any fluids can soak into the granite if left on the surface plate. Some liquids especially soft drinks can contain certain acids that can dissolve the softer minerals in the surface plate and leave pitting on the surface. Also you can use master straightedge with a travelling indicator or with beam gauge linear beam and detector and in line flatness gauge.

If the granite surface is regularly calibrated and tools are routinely rotated this wear can be lessened.