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Old 02-05-2010, 04:05 PM   #1
Ryan
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Default Portable Wooden CNC Machine


How's this for creative? Dude wanted his own CNC machine to toy with, but couldn't afford it. The answer? Build your own... Out of wood! The end result is a CNC machine with ...
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Old 02-05-2010, 04:47 PM   #2
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Default Re: Portable Wooden CNC Machine

Another forum Im on, a guy made one (not a pretty as that one). He won a contest with it. I think he made it for less that $100. cool stuff!
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Old 02-05-2010, 04:48 PM   #3
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Default Re: Portable Wooden CNC Machine

crazy !!!!
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Old 02-05-2010, 05:06 PM   #4
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Default Re: Portable Wooden CNC Machine

Is there a link to the guy who did it and what it took to make one? It looks like the guy over at woodgears but I didn't see it there. That site is http://woodgears.ca/
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Old 02-05-2010, 08:21 PM   #5
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Default Re: Portable Wooden CNC Machine

What tolerance will it hold?
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Old 02-05-2010, 09:05 PM   #6
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Default Re: Portable Wooden CNC Machine

Quote:
Originally Posted by fasteddie24 View Post
What tolerance will it hold?
Depends on the season.

Sorry I'm just not feelin it. As an excercize in quality woodwork I give it an A as a functional tool, not so much.
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Old 02-05-2010, 09:11 PM   #7
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Default Re: Portable Wooden CNC Machine

I wondered about tolerances too... They can't be that great... But I also wonder if that is the point or not of the exercise...
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Old 02-05-2010, 09:52 PM   #8
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Default Re: Portable Wooden CNC Machine

Very cool!

Now he should machine duplicate pieces in steel and make a second one
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Old 02-05-2010, 10:07 PM   #9
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Default Re: Portable Wooden CNC Machine

I saw that think on Make, very cool. It would be nice to make one of those out of steel and/or aluminum, that would be nice. I worked for two companies that made portable mills and lathes but they weren't CNC back then, don't know about now.

Here's a couple of more pics that I had saved on my hard drive after seeing it, as if I might ever built one:









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Old 02-05-2010, 10:24 PM   #10
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Default Re: Portable Wooden CNC Machine

Necessity is the mother of invention!!
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Old 02-06-2010, 12:02 AM   #11
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Default Re: Portable Wooden CNC Machine

I guess I'm missing how this is "computer numerical(ly) control(ed)"? Your hand is the control and your head is the computer?
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Old 02-06-2010, 12:23 AM   #12
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Default Re: Portable Wooden CNC Machine

Quote:
Originally Posted by alberto View Post
I guess I'm missing how this is "computer numerical(ly) control(ed)"? Your hand is the control and your head is the computer?
No hands...except to press a button on a computer.

in a nutshell...
motors mounted at varying axis points, joined with threaded rod;
computer program trigger power to the motors and control rotation and speed;
motors drive threaded rods;
threaded rod movement = tool/router movement

Last edited by wyndycity; 02-06-2010 at 12:26 AM.
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Old 02-06-2010, 12:24 AM   #13
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Default Re: Portable Wooden CNC Machine

those drives are hooked to a computer telling them when to turn that all thread
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Old 02-06-2010, 03:46 AM   #14
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Default Re: Portable Wooden CNC Machine

How is he going to get rid of backlash. There is no way he could mill a circle. Looks pretty though.

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Old 02-06-2010, 09:10 AM   #15
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Default Re: Portable Wooden CNC Machine

There are actually thousands of these machines out there. www.cnczone.com is a very large forum/site for hobbiests that make their own CNC machines out of a huge variety of materials. Kick around over there and you will see the Bridgeport that I converted to CNC.

It is possible to make your own CNC that can hold very tight tolerances but obviously it depends on the design and components used. I have seen several machines made from gas pipe and threaded rod that perform well enough for what they were intended for. There are also some pretty incredible machines on that site - homebuilt.

Getting into +- 0.015" is fairly easy. Getting to +-0.003" is a bit tougher, while holding "tight" tolerances is a completely different realm. It also depends on what it will be doing. Some machines are built just to drill PCBs, some are built to route wood and wood products and others are built for milling aluminum and steel. The designs and materials used mirror their intended use.

It is amazing what can be done with commonly available materials like threaded rod and gas pipe! Some of these homebuilt machines are very impressive. For example - the guy that built this wooden machine could mount a plasma torch on it and cut pretty accurate parts for a slightly smaller steel version then use higher accuracy parts to make a more accurate, more robust machine.

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Old 02-06-2010, 10:12 AM   #16
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Default Re: Portable Wooden CNC Machine

Thats awesome. I bet it does a great job, and it looks plenty stiff. I don't work with wood, but do you really need +-0.003 tolerances. Isn't that a picture of a circle?
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Old 02-06-2010, 01:54 PM   #17
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Default Re: Portable Wooden CNC Machine

I think it is pretty cool. I applaud the guy for his efforts. From what I can see it appears that he has what he wants, hats off !!!!!!
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Old 02-06-2010, 09:34 PM   #18
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Default Re: Portable Wooden CNC Machine

pretty impressive. As far as tolerances, how close could you guys get by doing it free hand??? Bottom line, his cnc should be fairly accurate and repeatable.

I applaude his efforts.
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Old 02-08-2010, 01:06 AM   #19
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Default Re: Portable Wooden CNC Machine

That thing is awesome, I bet its a lot sturdier than you think with all those gussets
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Old 02-08-2010, 08:40 AM   #20
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Default Re: Portable Wooden CNC Machine

that thing is freekin sweet! as long as he can duplicate 0 on the x and y axis that should be able to cut any piece he wants. plus if he is just cutting a single piece of something, instead of multiple pieces out of a single sheet, then the axis doesnt matter just as long as theres material under the cutter. i love it.
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