Build list and supplies

[ixenn]

I wasn't sure where this question should go, but I figured this is the best place; although I'm sure it will be moved. At any rate, I work at a metal distribution place so I have access to cast tooling plate and blanchard ground steel. We can also cut the cast tooling plate with a metlsaw plate saw to +-.002. So the question is does anybody have a parts list that a beginner to CNC mill DIY could follow. I would say my budget it $3000 spanned over a few months. I would like to use the cast tooling aluminum if I can, but if not what is a better choice? The application for the mill would be milling 12"x24" alum. 5052 or 6061, brass C360, and maybe some 1018 or 12L14. I have only a limited understanding as to where to begin, but I gather I need a motor to drive the tool bit, some decent size servos, and some good ballscrews. I also have a computer that I would like to use with Mach 3 if thats a viable option. I just don't know, in this industry, what good name brands are, what tolerances are acceptable, or where to obtain the parts.

[jalessi]

12" by 24" is pretty big, I would look for a older full size CNC machine that needs a control retrofit!

Do you sell any of the cut offs cheap?

Welcome to the Zone,

Jeff...

[ixenn]

what be the benefit of retrofitting a cnc if it's already a cnc? Also would I be able to stay in budget? I think it would just gain me more knowlegde and experience if I built one from scratch. Also I'm sure I could get you a good price for metal, just let me know what you need.

[jalessi]

The advantage to buying a old CNC with antiquated controls is PRICE.

There are some great deals out there between $500 to around $2K that already have ballscrews and good servo's

Replacing the junk servo drives is a cake walk and you end up with a very good heavy duty machine for between $3,000 - $4,500 dollars total cost

It would be very difficult and almost impossible for you to build a new CNC machine with 4500 pounds of mass for anywhere near that cost.

Where are you located?

Jeff...

[ixenn]

I am in southern California. Where would I find one of these cheap cnc mills? I have looked on craigslist, but only see nice cnc's for $7-$8thousand. Also if I'm just going to buy one, why change anything if it world?

[jalessi]

http://tinyurl.com/ce3xwa

The reason why you upgrade the controls is because they are 25 years old,
antiquated, not compatible with Mach3 or don't work any more.

Jeff...

[ixenn]

Now thats an ugly beast. Maybe ill just get a better one.. is something like this worth investing ? http://inlandempire.craigslist.org/tls/1124145266.html thanks.

[ixenn]

would this kit be a good pick up to start building? http://cgi.ebay.com/3-AXIS-CNC-Route...3A2%7C294%3A50

[jalessi]

Ixenn,

What do you plan on attaching it to?

It might be ok for a small router or a X1 style mini mill.

Jeff...

[ixenn]

A X1 type machine wouldn't be bad. I don't mind spending good money to get better components though. Like I said though, I don't know any good brands. I am also trying to figure out how long of a ballscrew i need to buy if i want 12" of travel on X and Y.

[Teyber12]

hey!

check out:

www.kelinginc.net
www.geckodrive.com
www.cnccookbook.com