bur for zirc removal

[Ryan Gottlieb]

what burs are you guys and gals using to cut the zirconia crowns out of the pucks? i don't currently use a high speed hand piece in that station so i would like to find hand piece bur (but I can add a high speed if I absolutely have to). thanks

 

[Marcusthegladiator CDT]

Should definitely have an AquaspenceII on that work bench. Definitely. Hell, find a used one.

 

[JohnWilson]

Ryan to cut zirc out of the puck (green) I use a HP diamond by Axis 850-016m-HP

It a long thin diamond so it has good reach, since its turning considerable slower than a high speed make damn sure you hand piece chuck is running as concentric as possible. Slow speeds notoriously wobble a bit at the slower RPM's.

 

[Tayebdental]

John I use a straight hp, mieisinger long shack carbid bur.

 

[Toast]

I've always used a HP #1170S. Like John said make sure your hand piece runs smooth. At full speed it cuts like butta.
Komet has a kit that looks cool but probably expensive.
https://www.kometusa.com/~/media/KU...2682.pdf?8d488ed4-91b4-4288-8c39-9258ef8dc214

 

[2thm8kr]

Ryan to cut zirc out of the puck (green) I use a HP diamond by Axis 850-016m-HP

It a long thin diamond so it has good reach, since its turning considerable slower than a high speed make damn sure you hand piece chuck is running as concentric as possible. Slow speeds notoriously wobble a bit at the slower RPM's.

Get a KaVo hombre!

 

[Marcusthegladiator CDT]

I was thinking he was talking about cutting sintered sprus on a bridge. Scratch the Aquaspence. A lab handpiece has the reach you need for those hard to reach spaces cutting in 16mm+ blanks...

 

[JohnWilson]

Get a KaVo hombre!

I do have 3 and they are my least favorite, probably because I just replaced the collets at a price of 90 each. For a flipping 50cent part. Tons of torque but thats not what I need for this

My favorite is NSK Z500 seems to go and go.

 

[Ryan Gottlieb]

Sounds good, I'll give some of these a try. We have been using a striaght carbide in a brand new nsk handpiece but it is time to reorder so I thought I would see what some of you were using.
Thanks

 

[Toast]

I love my Z500, but for green state Zr I've delegated an old Brassler UP500 that does the job well.

 

[2thm8kr]

I do have 3 and they are my least favorite, probably because I just replaced the collets at a price of 90 each. For a flipping 50cent part. Tons of torque but thats not what I need for this

My favorite is NSK Z500 seems to go and go.

K5?

 

[JohnWilson]

Kpower grip


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[2thm8kr]

Kpower grip


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Nice.