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CAD - Engineering - Technical > How to Make a Three Axis CNC Machine
 
 
rcflyer_09
Veteran
Location: Mount Airy, North Carolina

My Posts This: Topic  Forum		http://www.instructables.com/id/How...e-Cheaply-and-/

http://www.instructables.com/id/Eas...illing-Machine/
05-05-2009 06:22 PM
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jphilli
Key Veteran
Location: Atlanta, Ga.

My Posts This: Topic  Forum		I've been wanting to try building one for a while now. Have you tried it yet rcflyer?

It's a bit of a daunting task if you have little machining experience but I'm confident I'll do it eventually.
05-07-2009 03:36 AM
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rcflyer_09
Veteran
Location: Mount Airy, North Carolina

My Posts This: Topic  Forum		No I have not tryed to build one yet, just have had the idea, if I had the motor's, worm drives, and electronics. I could make the rest pretty easy.
05-07-2009 05:59 PM
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blighty
Senior Heliman
Location: uk

My Posts This: Topic  Forum		www.cnczone.com would be a good place to start.

not sure how far you want to go, but this is where i got my steppers etc from.... www.homeshopcnc.com
05-22-2009 11:21 PM
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torenhg
Senior Heliman
Location: Milwaukie, OR

My Posts This: Topic  Forum		Will no doubt need one of these in the future and based on what the prices are to purchase a machine, a kit assembly with probably be necessary.

Has anyone done a build thread on one of these?

Blade 400-3D
Shuttle ZXX
MinAir Fury
MinAir Spectra G (In Build)
06-21-2009 04:21 PM
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terje
Senior Heliman
Location: Mysen, Norway

My Posts This: Topic  Forum		I just finished one from my own design a couple of weeks ago. It took about two months+ to build, and has a working area of 420x1000mm. It cuts aluminum very easily, which I feel is an important quality for this kind of machine for the r/c hobbyist.
The financing came from reducing my hangar a little, and most of the parts where ordered from the far east via Ebay.
Here's a video of the first test cutting in aluminum (manual running):
http://www.youtube.com/watch?v=msRBLvtiDKs
07-31-2009 08:25 PM
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ALLISTAR
Heliman
Location: SWEDEN

My Posts This: Topic  Forum		what tolerances can you expect? ... 0.1mm ?

//Alexander
09-09-2009 05:27 PM
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blighty
Senior Heliman
Location: uk

My Posts This: Topic  Forum		heres one of the parts i made on my one. flybar thing for a mini titan.

didn't take to long to make, did it Drlodge


10-09-2009 01:46 AM
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jphilli
Key Veteran
Location: Atlanta, Ga.

My Posts This: Topic  Forum		That's cool as hell man.

Hopefully I can get a setup one day.

Blighty, would you mind posting some pictures of your machine?
10-09-2009 02:00 AM
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terje
Senior Heliman
Location: Mysen, Norway

My Posts This: Topic  Forum
Quote 
what tolerances can you expect? ... 0.1mm ?

//Alexander

At least that when 1/2 stepping. I don't really want to divide the steps any further, as I don't want to loose repeatability.

With 1/2 stepping I have 400 steps on one turn of the motors. The threads are 5mm pitch. 5mm/400steps=0.0125mm resolution. -Theoretically that is, in practice it might be a bit more coarse.
10-12-2009 01:19 PM
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CAD - Engineering - Technical > How to Make a Three Axis CNC Machine
 
 
blighty
Senior Heliman
Location: uk

My Posts This: Topic  Forum
Quote 
Blighty, would you mind posting some pictures of your machine?

i'm modding the head at the mo, I'll post some pics when I've done it.

untill then have a look here.
http://www.ihcnc.com/

my one is basically the same set up, but i have stepper's and my machine is a little bit smaller. these guys used to mod he same machine i have (RF45) but in the web site they list why they don't use it any more. the only thing i don't like about the RF45 (so far)is the max speed of the head. its geared to 1600, but if you tach it it's 1740. could do with being around the 3000+ mark.
10-12-2009 05:32 PM
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CAD - Engineering - Technical > How to Make a Three Axis CNC Machine
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