Hi all,
First CNC here, I am just starting with it and have a basic 52mm spindle mounted on it.
So far I did my first tests with 1/8 bits.
I have a set of ER11 collets, including one which is meant for 6mm shank.
As many of you use trim routers with 1/4 or 6 mm shanks, it is obviously ok to go with that diameter for the machine itself. But I was wondering if a 52mm spindle is suitable for use with 6mm on my MPCNC.
It would be for surfacing, and roughing passes. Even with lower feed and speed, material would be removed faster with a 5 or 6mm up bit rather that a faster 1/8, right?
Any thoughts or experience on this?
Thanks in advance
Anthony
Using a good speeds and feeds calculator and referencing your spindle’s spec (especially a torque curve if you can find one) might be a good start.
At the top of this one it reports the torque for your combination of endmill, material, cutting depth etc. It also reports the power which it calculates from the torque and rpm. You can use this directly to get a ball park but since the advertised power of a spindle is at its best point on the torque rpm curve your mileage may vary. Better would be to cross reference the torque/rpm with the torque rpm curve of your spindle.
I personally would only use that as a gut check of whether something is completely ridiculous or not. If the numbers don’t look ridiculous give it a try on some scrap material and find out.