View Full Version : CNC Milling questions

08-02-2010, 10:54 AM
Hi all.

Whatīs the best way and equipment to mill high detail toy models from 3d at home/studio?

Iīll be looking at the V-Flash printer also, but donīt expect the materials to be suitable to our needs.

Ideally Iīd like to build a milling machine at lower cost than the Roland equipments, but I canīt find any plans that guarantee the same quality you can get from Roland mills, for example.

If anyone knows about better/cheaper alternatives please drop a post or a pm.

Iīm also interested in Polystone casting, but canīt find any clear instructions/tutorials on the net. If you know some please post them here.

Thank You in advance

08-02-2010, 10:59 AM
A 4 axis mill will set you back a hefty sum. and from the sound of it, you need more than 3 axes.

I'e visiting these guys torrow to look at a medium sized 3-axis CNC mill for us:


I have some links somewhere for a 'cheap' 3d printer, but watch out for the material costs there .. they can be a killer for the private shop.

08-02-2010, 03:47 PM
I've been building my own 2.5 axis CNC milling (more routing) machine for a while (it's pretty much complete; just 100km away from where I live and work, so it needs moving).

The parts have cost me probably €3000 - but that's only because I'm building a car, so I don't need accuracy: I need size. So mine can mill around 1200x1200x100mm in size, and has a theoretical accuracy of 0.0625mm (although for my needs, 1mm would've been good enough). I can wind the stepper motor's steps up, and get a maximum theoretical accuracy of 2.5ĩm, but I suspect that the play in the machine would be too much to see that.

A true 3D milling machine is complicated; a 2.5D (where the milling bit moves up and down) is much easier, but that does limit you to the type of milling you can do.

If you're interested, http://www.tribbeck.com/steel/stlcutter2/ is the site I set up for the build of my router.

There is a "do it yourself" 3D printing machine available, which I may have a go at making once I've made mine - http://www.reprap.org/

08-03-2010, 05:37 AM
There is a "do it yourself" 3D printing machine available, which I may have a go at making once I've made mine - http://www.reprap.org/

thx all.

Yeah, Iīve been looking at the reprap, but from what I can see the surface finish is nothing to write home about. But an interesting project to keep an eye on, no doubt.

08-03-2010, 06:53 AM

And similar, but a bit more accomplished. Still too grainy and bad surface.

But yeah, seeing that one I could imagine a sub 2000$ printer with results comparable to airfix modelkit parts until 2011.

Interesting development.