New Kress spindle, around 75db at 10,000rpm no load. So far so good. Needs more set up, not running square to the bed.
How dose it work for aluminum?
yes, how does it Work for alu ?
@Eric_Edwards lots of small cuts is what I used to do with the old one, you just have to be patient. The cutters are fine, it’s the amount of flex in my mounting that is my biggest problem, when I get time, I’ll machine something stiffer, then watch the Y-axis flex, ha ha
Hi, I’m in the process of building a CNC to be able to cut Alu, and I am very interested in how your machine is built, now you say its flexing. I could save myself some valuable time, if I know where the pitfalls are.
I think the pitfalls lie in the use of wood and plastic to build a machine tool. If you want to cut aluminum, build a machine that can comfortably handle it.
@Henrik_Larsen I built my spindle mount for woodwork, in materials I had to hand (22mm thick nylon6) I’ll make the new mount in 16mm aluminium and brace it properly. I suspect at the moment my 12mm guide rods on the z-axis will be the next weak link.
In my studies of the subject, wood and/or plastic will work fine. But there are trade offs in everything. One big one is a moving/sliding gantry. The only benefit of which is the footprint of the machine itself. So if you have the room, a fixed gantry (ie. moving table X axis) can be built out of most anything because weight of the gantry is no longer an issue. You can easily build a wooden (metal rail n hardware of course) that is stiffer than one with an aluminum gantry.
Course if you really want something stiff, your real choice would have to be cast iron… and a fixed gantry of course…