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Step 1: Drawing the Machine

I started by creating the design of the machine on SolidWorks.

On the PDF i put all the measurements.



Step 2: Start Construction

After seeing all the measurements, I calculated the amount of iron that I would need to build the machine. It was something like 16 meters of square tube.



So I bought two bars of six meters square tube 20*20*2, one bar of 6 meters square tube 25*25*2 and one bar of 6 meters angle iron 25*25*3.



Then I started cutting and drilling holes in all parts according to the technical drawing.

after that i started welding the parts.





Step 3: Motors and Drivers

i bought on ebay one kit of stepper motors with driver and power supply.

The steppers are Nema 23 Stepper Motor 287oz-in



Step 4: Final Product

Overall, the machine is good, just not fast enough because i use a m8 screw as lead screw. 

So the machine only can do 300 mm/m



Step 5: Some Stuff

stuff i made with the machine.
<p>Would you like to reduce the backlash?</p><p>It is very Easy , i think :) <a href="http://www.dumpster.com" rel="nofollow">www.dumpster.com</a> is a link with antiback lash solutions and cheap</p><p>Otherway you can DIY with a pieces of HDPE High Density Poly Ethilene ( Polietileno de alta densidade , ex t&aacute;bua de cortar p&atilde;o) </p><p>In a shop of specialized plastic materials you can take it very very cheap!!</p><p>My Email</p><p>nunotec@hotmail.com</p>
<p>VERY VERY GOOD PROJECT I WOULD LIKE TO BUILD IT </p><p>IT SEEM YOU ARE PORTUGUESE , I AM TOO, I AM FROM OPORTO</p><p>BEST REGARDS</p><p>NUNO</p>
This looks awesome! <br> <br>I'm quite curious, what kind of accuracy / precision do you get? <br>and what depth can it cut?
It has a good precision, but have a little bit backslash. The depth of the cut depends of the bits, but i think 70mm it`s the max.
What is the coiled yellow line for? Is that compressed air or a vacuum?
how hard was it to tweak the software? <br>
a little bit, i still have some problems with backlash but isn't a big deal
You can compensate for backlash in Mach 3. It works really well.
Im new at this, so before i start i want to know: How did u calibrated the CNC? (how does it know how big is 1cm...) And is there a difference between USB and Paralel control, i mean does the same software operate with both?
What do you think about the performance of the motors? I'm trying to decide what size to buy.
Good job brother. How heavy is your machine?
thanks bro. maybe 30 or 40 kg
Yes please, some tips are always welcome. My problem with these motors is that the faster they go more torque they loses. <br>This motors are rated 8volts 1Amp <br>sorry my english, some times i have to use google translate :P <br>
For the motor couplers i'm using a piece of rubber pipe tied with zip ties. <br>and the motor driver is a TB6550
Yay rubber hose FTW! If you'd like I could tell you how to tune your motor drivers up to get them to run better. I know about TB6560AHQ motor driver ICs because I made my own drivers with them. That made me to learn all about the things.
Can you show a picture of the motor couplers. What type of motor drivers are you using. Thanks

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