Hello I am building a workbee cnc. I use a 800W spindle with an ER11 chuck.
So I choose to use 6mm bits.
I will cut aluminium, and hard woods (mainly bubinga and some ebony).
My bubinga pieces are around 45mm in thickness, contouring them is what leave me puzzled !
Do I need to buy a bit with at least 45mm cutting area ? Or can I use smaller bits with multiple passes?
Will the non-cutting area rub against the wood and create friction ?
[Yes, you'll need at least 45mm in flute length, unless the shaft size is smaller than the diameter at the flutes.]
Also I cut a lot of metal (mainly aluminium and stainless steel of 2mm),
can I just buy a 4flutes HRC60 bit and use it on bubinga wood ?
[You can use it, but a 2-flute bit would work better. 4-flute cutters are stiffer, and better for hard materials like steel, but 2-flute cutters evacuate chips better in materials like wood and aluminum.]
Because I read that wood bits use a different cutting ?radius/shapness? is it true.
I wanted to do everything with these bits :
https://www.aliexpress.com/item/33042760122.html
[Those would be better for steel than for wood.]
Thank you for your help.
I watched a lot of videos but none explain these things.