Cbn

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Re: Cbn

Post by user-3597028 » Sun Dec 01, 2013 1:23 pm

Here is the CBN holder I made for my machine. Uses 3/8" inserts.


image.jpg

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Re: Cbn

Post by buck » Fri Dec 06, 2013 8:47 am

PHANTASM wrote:pic
This is pretty slick. What type of balance work did it require?
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Re: Cbn

Post by PHANTASM » Sat Dec 07, 2013 12:30 am

Cedarmachine wrote:
PHANTASM wrote:pic
Which direction does your SM 2000 cut?

Mine spins clockwise from the bottom and cuts right to left.
same

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Re: Cbn

Post by PHANTASM » Sat Dec 07, 2013 12:33 am

buck wrote:
PHANTASM wrote:pic
This is pretty slick. What type of balance work did it require?
not really any at all. I balanced the blocks and stuff myself

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Re: Cbn

Post by mitch » Sat Dec 07, 2013 5:41 am

Cedarmachine wrote:Here is the CBN holder I made for my machine. Uses 3/8" inserts.


image.jpg
Cedar can you post a few more pics of this. Did you make the tool bit hoder also.
Thanks Mitch

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Re: Cbn

Post by user-3597028 » Sun Dec 08, 2013 3:19 pm

mitch wrote:
Cedarmachine wrote:Here is the CBN holder I made for my machine. Uses 3/8" inserts.


image.jpg
Cedar can you post a few more pics of this. Did you make the tool bit hoder also.
Thanks Mitch
It's a Valenite tool holder. It's designed for bits with the hole in the center so I just machined the little stem off.

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Re: Cbn

Post by nickmckinney » Wed Jan 15, 2014 3:35 pm

Question why would one choose 3/8" vs 1/2" which is better at what. I have only used 1/2" before and getting a holder/head for my machine its time to make a choice for the bit size.

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Re: Cbn

Post by user-3597028 » Thu Jan 16, 2014 5:45 am

nickmckinney wrote:Question why would one choose 3/8" vs 1/2" which is better at what. I have only used 1/2" before and getting a holder/head for my machine its time to make a choice for the bit size.

My thought was, that the bit would be a little more stable in the holder, for one.
Also, the "cutting edge" has a smaller radius on the 3/8 bit. I think less of the actual bit is doing the work and keeps the cut from possibly chattering.

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Re: Cbn

Post by mitch » Thu Jan 16, 2014 6:52 am

Cedar can you post a few more pics of your cutter.
Thanks
Mitch

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Re: Cbn

Post by buck » Thu Mar 27, 2014 11:58 am

PHANTASM wrote:pic
I want something like this for my machine. Can you post more info/pics on this? I have a post on the shop tech section on this subject also. You can see a kit just like what you made but adjustable. http://m.ebay.com/itm/151248065961?nav=SEARCH
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Re: Cbn

Post by mitch » Sat Mar 29, 2014 8:34 am

I have been told that set up will flex too much. Anyone else have any thoughts on that ?
Mitch

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Re: Cbn

Post by nickmckinney » Sat Mar 29, 2014 12:04 pm

I was looking at doing the same thing and came to the same conclusion. Comparing it to a 1.5" iron "flywheel" it has to move or chatter a bit more if you tried to do a heavy cut. All depends on how much you want to cut at once. Place I worked at on the Rottler I could do .005-.008" without problem in aluminum, my friends Comec is worn enough that he only does .001" per pass which to me takes too much time if in a production setting.

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