I really don't know where to start this, but I'm going to give it a shot and hope one of you genius can point me in the right direction. I'm running a home built mill machine for mostly woodwork. I'm driving the bits with a Porter Cable Trim Router. Been running it for about 3 years and it works well. I'd like to have control over the spindle speed but have no idea what it would take. I'd also like to be able to use different diameter bits (Other than 1/4"). If any of you have any input it would be greatly appreciated.

Thanks,
Dave

You'll need to mount a sensor to the shaft, but if you can, these work great.
www.superpid.com

Have you checked Porter cable for adpaters?
I needed one for 1/4 to 1/8 for a Dumore handpiece and they wanted  $60 for one.
You can make them, but, to eliminate runout they should be ground.
RICH

Dave,

Check this page to see if these collets will work for your specific router:

http://www.precisebits.com/gateways/ColletsNutsHome.htm

Dave

Dave,

You may want to take a look at some of the options we offer for this: http://www.cnc4pc.com/Store/osc/index.php?cPath=25.

The E2: http://www.cnc4pc.com/Store/osc/product_info.php?cPath=25&products_id=287, is probably the easiest to wire and setup.

Arturo Duncan
http://cnc4pc.com

Guys, Thanks a million for all the help. I ended up getting a Super PID speed control, changed the router to a Bosch Colt, bought the precision spindle and finally got it all changed. I'm now trying to figure out exactly how to control it with Mach 3, but it seems to be amazing. The speed controller will allow me to run the spindle anywhere from 5000 to 30000 RPM. I've even gone as far a running the router at 5000 rpm and while it was running I shoved a piece of 3/4" hardwood into it and it never slowed down. The reason I changed to the Bosch Colt is that the company (link above) does not sell Percision collets for the Porter Cable trim router (it's too sloppy of a router and they decided it wasn't worth making percision collets for).
Now I'm off to see if I can figure out how to control the PID with Mach 3.
Thanks again for the help.

Dave

There's a huge thread on the SuperPID at CNC Zone that should have all the info you need in it.