Looking for people wanting to develop new plans for a cheap cnc

[CNCadmin]

I have added a new download section- http://www.cnczone.com/modules.php?s...ownload&cid=15

All uploads will be reviewed before making public.

[Hobbiest]

Ok...finally have internet access again! Yeah! I have a machine that I built using drawer slides for about $50. I have not run it yet. Have not even wired it yet! I love the build too much and am working on too many other projects at the same time. Will post some photos when I can.

Here you go.

[CNCadmin]

Looks good, does it have a lot of play?

[gjahnke]

If you are going to put together a set of plans to give away, it is not really fair to use johns roller blade setup. He came up with the idea and got it functional, and he sells the plans that go wih it. Legally, you could probably do it since the idea has spread across the internet, but it is not really fair to him.

As an alternative, you could use chrome plated carbon steel rod. This is available at most metal suppliers, and is available in any country in the world. It is what they use for pushrods in hydralic cylinders. I bought a whole bunch of it real cheap, but the regular price is only $2 per foot (for 1 1/4). It is much stronger than gas pipe (I used it on my latest machine which is made of cast aluminum and cast iron and I regularly cut steel with my machine). You can make delrin bearings for it, use bronze bearings, or just bore a precision hole and slide it steel on steel since the chrome plated rod is exceptionally smooth and has much tighter tolerances overall than gas pipe or rollerblade bearings.

Stronger, cheaper ($2 per foot, but still cheaper than roller blade bearings and gas pipe. even if you get precision bronze bearings, they only cost about a quarter each) and available anywhere int he world. Hard to beat, IMHO.

Oh, and as far as I know, this an original idea by me, and I don't care who uses it or what they use it for.

[Nono]

I started a thread Where to start. What should be first?
http://www.cnczone.com/forums/showth...&threadid=3756

I agree that eveyone has something to contribute. there should be several machine sizes one for the guy with a large work area and one for the rest of us. We should start with a universal assembly list like components that make up such machine.. The size of the parts isn't important (eg length of rails) at first, that will develop as the machine does

[CNCadmin]

Originally posted by gjahnke If you are going to put together a set of plans to give away, it is not really fair to use johns roller blade setup. He came up with the idea and got it functional, and he sells the plans that go wih it. Legally, you could probably do it since the idea has spread across the INTERNET, but it is not really fair to him.

As far as I know, anything is fair game, unless it's a patented idea you can use any ones idea to build a machine. Roller blade set-up is not a patented idea, as long as no one takes someone else plans and and post them that it's not illegal to use bits and parts of other peoples ideas.

Just do not post plans that clearly belong to someone elsa, or that you paid form someone that sells them for personal use only.

[Nono]

http://www.comtrol.com/products/cata...roduct=rp_upci

I think this is a cheap controller card up to 16 axis can find them on ebay
Anybody know anything about them?

[Zagroseckt]

Contriler cards Thats somthing we need to look at as well.
Me personaly i'm not buying a controler card there to easy to make...

We should maby include plans for one with the design and also offer links to other's

And For the ugly duckling idea. (why not ake multi grade plans) Example one table design that can use everything from threded rod to acme lead screws. Drwar slides to nilon frictionles berrings./

All in one plan so as some one gets the cash or need to improve there design they dont have to build a whole nother unit.

[RCjunkie]

[i] If we could get some input from CNC Admin that would be great. If we could provide these for a small fee downloadable in say PDF format or something with the proceeds going to the site to help cover bandwith, storage space etc. Any other thoughts? Dan [/B]

I like this Too.

[BlueRose]

here is a link to some inexpensive Linear bearing that my be of some use in the project.
http://www.buildyouridea.com/cnc/hbl...e8/phase8.html
there is other information in his site that may be of use.

Patirck

[Clyde]

I'm a newbie at CNC, I was a software systems architect (up to June 2002), but quit to start a woodworking businesss (guitars, dulcimers, clocks, whatever).......

I want to build a CNC Router to be my extra hands, since I have no employees (and can't afford any).

My questions are things I think anyone starting out asks. I have read a portion (small) of the threads here on DIY Routers as well as other web sites. One thing I haven't seen yet (although it may be here somewhere) is, "what can handle what? as far as size/material goes.

I think I could build a router (after the last week or so of research) that handles a dremel pro, but what about a 1 3/4 HP porter cable? Do I need 1.5" glide rods if the X axis is 48" and only supported on the ends?

I know the engineering data on manufactuers web sites probably give the whip, vibe, crush, etc...statistics but.......I'm looking at too much, too soon to be checking stats on every web site (and may not be qualified to determine it from their data/formua).

To my point, don't forget stuff like this in your deliverables (plans, etc)...

BTW, I have bought thomson rails with continous support and OPN bearing pillowblocks on ebay just because I got tired of trying to determine if I could do with less after searching, and searching...I have seen threads that mention the use of drill rod and skate bearings, but what's the accuracy, stability, repeatability, etc...

Oh, and I too have a 3D modeler (Rhino 3D v2.0) and can use it pretty well (I use it for my woodworking plans) so, if anyone needs any 3D, I'm willing to help (it seems several others can help with that also from the 1st page of this thread).

This sounds cool, please, just make it happen
Clyde (Stork)

[Hobbiest]

Paul...it does heave some play, but not enough to where I think it will be noticable in wood or foam. I never intended to take on NASA contracts or anything! I might be able to find the time to wire up the controller, and check it out. Hot rods are melting my brain lately though!

gjahnke...Cranky claims to be the inventer of the bearing design, but his arrogance (in my experience with him, and IMHO) carries it a bit far. I will give him the claim to the gas pipe idea. That is a very slick low buck, thread together idea. Personally, I would rather use solid rod. 3/4" zink plated rod is generally the same price as the gas pipe, in the same hardware stores! I really like your suggestion of chrome shafting, and wish more people could see the low buck advantages inherent in such a system. Would like to see some photos of your uses.

I personally think that there are no exclusively origional ideas, only applications. As I have found out many times; not only with this stuff but with everything; when I have a cool new idea, I find out months after I have started experimenting with it that many other people have thought the same thing! It just takes someone who isn''t afraid of trial and error to make it work. Cranky seems to be good at this as well, and I applaud him for that. (I just always hate it when someone says "I invented this, and that" when really they should say, " I was the first to apply my ideas to tangible reality")

Sorry guys, late night ranting!