Questions, Questions,Questions…
What are peoples experience with the quiet cut spindle? I have noticed cutting with it the RPMs are a lot less than even the dremel that comes with it. So far it has cut wood well but I was wondering if this is going to be a problem cutting other materials.
Also as in @javierymirna posts I have slow feed rates to ensure a successful cut. So I was wondering if people are happy with this workflow, or is the Dewalt 660 the better option?
Are people experiencing binding at all (which ruins the job)?
How often should a bit be changed?
Thanks,
Frank
Hi Frank! I did notice a difference in low RPM (quiet spindle) compared to hi (dw660)… I like the finish better with the quiet spindle, but it takes for ever to b able to finish a job. The dw660 like everyone will tell u is FAST! But loud… I had a little incident yesterday, my Shapeoko just stopped in the middle of a project… 
I wonder what could b? Good luck! 
I don’t have any experience with the quiet cut spindle, but I did just upgrade to the DW660. It cuts really nicely, although I wish I would have removed the collar thingy before mounting it as most people suggest. Biggest downside is noise level. Holy smokes. If you get the 660, you will also want to get one of these: http://smile.amazon.com/gp/product/B00009LI4K/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1
We are using the quiet cut spindle, so far it seems to be going fine, although is is used primarily for 3/8 and 1/4 inch plywood cuts only. We kept it at the default setting as far as movement, and use it at the highest RPM setting.
Just a quick comparison: the quiet cut spindle is like an axe and the DW660 is like a chain saw. They can both cut a tree down. One will do it much quieter than the other and might take longer.
I have them both and I mainly use the quiet cut due to the fact that I’m cutting in my shed late at night and don’t want to annoy my neighbors with the sound from the DW660.
It would be awesome if you could get the power from the DW660 without the sound.
I haven’t experienced any binding while cutting anything with it. I am making sure that my feed rates aren’t too high either.
About the sharpening of the bits… that’s another topic in and of itself.
@Marc_Schaefermeyer u r a great teacher! 
Marc would you try measuring the sound level of each with a Sound Meter app, I’d like to see the difference as a number.
Yeah I could do that tonight. I know that there is already a video of somebody doing that. I think it was on Inventables blog maybe. Either way I will try to post something tonight when I have time.
You are right, I just found this:
How Quiet is It?
We don’t have professional sound level measuring tools or an anechoic chamber, but for a simple comparison, I used a cell phone sound pressure level meter app. The rotary tool had about 75dB of noise and the DC spindle had about 67dB of noise. The dB scale is a logarithmic scale so each 3dB is about twice the noise level. This means the rotary tool is roughly 7-8 times louder.
Looks like that was comparing the rotary tool. I know for a fact that the DW660 is much louder than that. I have all three of them so I will do a comparison between them all.
Just FYI… I tried to video last night using my webcam and for some reason it didn’t save the recording. I’m going to try again tonight. I can tell you off hand that the original rotary tool is about 74db, the DW660 is about 80db, and the quiet cut spindle is about 65db.
Like I said though, I will reshoot the video tonight as I was rushed last night as well.