What are the differences between internal grooving and external grooving？

Carbide saw tips :
Carbide is a very common material on any sort of cutting tool: For example, saw blades, lathe bits, drill bits, router bits are generally made of carbide. Carbide is so popular in these sorts of tools because it stays sharper longer than most other materials.
With something like a carbide-tipped saw blade, the main body of the blade is made of steel. The small tips of carbide are brazed on to the body.that is our carbide saw tips , A good carbide saw tip might hold an edge ten to twenty times longer than a SNMG Insert tool steel tip.
Carbide tips do get dull eventually when works for a long time . You can sharpen them using the same techniques you would use with tool steel, but because they are so hard, you use a different abrasive. Something coated in diamond or a carbide abrasive wheel is widely used ,after sharpened ,it can be used for cutting again .
From How Diamonds Work this book, we know that diamond is the hardest material there is. Moissanite — silicon carbide — is very close. Tungsten carbide and titanium carbide are both made of the metal combined with carbon. They range between 8 and 9 on the MOHS scale.
Tools aren't made entirely of carbide partly because it would be very expensive, but also because the tool would be very brittle. Steel is actually a better material for the body of the tool because it is tougher and will not crack or shatter.
So carbide saw tips used more and more widely Metal Cutting Insert ,we can offer size in metric and also in inch ,surface finish can be coated ,polish or sandblasting .we will recommend suitable grade for different workpiece ,for example hard wood ,soft wood ,metal or other material .
If any interested or needed for carbide saw tips ,welcome to contact us .thanks!

The Carbide Inserts Website: https://www.cuttinginsert.com/product/logu-insert/