What size of burs (review) would you repair and how? => 19 photos

     The alternative name for this "HSS" bur is "High Speed Steel".

 This higher-grade of steel wears and cuts much better than the Carbide burs. That particular bur has a definitely shorter life span, as named, displaying the letter 156-"C".

 These Carbide burs cannot be modified or recut; once fully worn, they should be discarded.

Don't entertain the idea of repairing burs of this small size.

 

 The repairing location is actually quite limited. In this photo, only the 'lower section' of the girdle needs to be attended to.

This 'lower section' is where the Pavilion of the stone will eventually rest.

Only half of the bur will be modified or recut. This section is where the cutting of the claw will occur.

 This photo was taken using my 600x power digital microscope, which enables you to see the size of the teeth.

 Here is the spacing of the teeth on an HSS bur.

  This photo is of a carbide bur. The difference between the Carbide bur and the HSS bur is the close proximity of the teeth.

 After a few weeks, these teeth will eventually wear down, but they can be repaired by recutting EACH tooth. Don't expect this repairing process to occur on the carbide teeth. The reason is that the teeth are too close together, and the repair is not cost-effective.

  These 'repaired edges' of these teeth are much sharper and will cut into the metal with little effort.

 

  Repairing bur teeth on these 0.07 mm width HSS burs is so delicate that sometimes this repairing process isn't worth the effort. 

 These minuscule teeth were shaped on a machine lathe, but not by hand, hence the reason not repair them yourself.

The 'contact' area of any of these HSS burs is actually where the two angles of the teeth meet. This 'junction of angles' will be where most of the wear occurs.

      You can see just where the Separating Disk is repairing the bur teeth.

There is NO NEED TO CUT any further than what is shown here.

 When the HSS teeth have been repaired, you can then proceed and cut any claw or bezel as you wish.

These well-worn teeth are just that..badly worn!

These HSS bur teeth are in the process of being repaired! Do this 'one tooth' at a time.

Here is a comparison photo, 'before', and the lower photo is the 'after' view.

The recutting of the 'Pavilion teeth' has been completed!