iowajames wrote:After I get my CNC mill (mydiycnc.com) I may just machine my own.
just a couple of things.
I've made a desktopmill almost exactly like this one as a fun project a few years ago. (but with manual rather than CNC controls)
Same aluminium box construction, a clamp holding a dremel type tool...
the thing would have struggled cutting butter, you ever notice how videos of these things always show them cutting that Oasis/floral foam stuff? it's a good tool for making foam moulds (if I wanted to do lost foam casting)
it's a great tool if I wanted to make something for a model aeroplane from balsa wood.
to say that the FAQ on the site is a little optimistic is an understatement.
What are material restrictions for this mill? Will it be able to machine metals? If yes, up to what hardness?
The short answer to your question is "Yes". This is a common question but, however, one that doesn't have an exact answer.
The reason is that with the right end mill, correct speed and cutting depth you can mill almost any material. The DIY Desktop CNC Machine has sufficient power to snap off the bit before it would get stalled out. The "harder" the material the smaller the depth you take from it on each pass.
Sure if you want to remove half a gnat's pube sized slither of aluminium at each pass it'll probably cut aluminium, but the idea of cutting other metals is just a fantasy! the motors that move the gantry might be strong enough, but the dremel tool motor will likely stall.
I've no experience with these particular machines, but if I were you I'd ask them for a video of the machine actually cutting aluminium before you put money into it in the hopes that it can do that.
(if you want to see pictures of my home made milling machine they are here
The second thing is, to make a folded metal aluminium sheet you really want a press brake, of a vice, two blocks of wood and a hammer. it's not really a CNC task.