Supported rail or other?

[Lee Roberts]

and now we know ;-)

[irving2008]

I wait with baited breath for you to try 100m/min....Nice theory work....Have you used the milling machine you bought yet?

Nope because I've been in India the last 10 days and its still sitting on the garage floor waiting for me to make a stand for it...

So, Keith, I'm not sure what you're implying about the theory... as regards your video.. I very much doubt a Dremel can deliver enough power to achieve any of my examples, it certainly needs something more beefy in the order of 300W+...

[Lee Roberts]

Sigh...no lube !

[Lee Roberts]

Do you mean coolant? If you did you would notice no build up of chips...coolant finely atomised with a flow of compressed air removing the chips and depositing them everywhere.

Yes i did, how do you atomise the coolant? all the other setups i'v seen they seem to be flooding the cutter with coolant?

[irving2008]

Hey guys - coolant mist is OT, take it to another thread.. btw theres a thread on CNCZone about how to do this using a cheap airbrush spray unit and shop compressed air (for those of us with a compressor)...

[irving2008]

Regarding theory work Irving I'm implying that it's just that, Not fact just an idea thrown out for appraisal.

A good memory and "suck it and see" is a better teacher imho.

True, but the calculations are based on real-world laws of physics. I'm not saying certain things are impossible, you can always empirically achieve theoretically diffcult things - like milling Aluminum with a Dremel - but how long will those bearings last, how does the accuracy drop off as the runout increases, how hot does it get before the poor thing melts, etc... There's no harm in understanding the limitations and designing around them...

All I was trying to show was that the fact that 30mm end-supported rail isnt as good as 12mm supported rail under a range of common tasks that a router/mill might be designed for - which we already knew empirically. I agree "suck it and see" is a good teacher, but equally if I don't have the personal experience I don't take someone else's word for it verbatim without some level of research into the issue. :D