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Mini CNC router, complete plans and instructions

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The Mini CNC project is a complete set of plans and instructions on how to build a 3 axis CNC machine that is functional and also precise. The Mini CNC is very simple and easy to build and if you have all the materials and parts prepared you should have it ready to work in less than 5 days.

 

I wanted and also needed to build this Mini CNC machine so I can make faster and more precise the parts that I need for my other home projects.

 
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Step 1: Mini CNC specifications

The working area of the machine is X=450mm (approx. 17.5 inch) and Y=250mm (approx. 10 inch) and can mill parts as high as Z=110mm (approx 5 inch).

The maximum milling speed on X an Y axis is 2400mm/min. and on Z axis is 1800mm/min.

The resolution of each axis is 1/50 or two hundredths of an mm and one axis revolution means 4 mm of movement.

The router used for this CNC is a Kress 1050.

The number of parts used for building this Mini CNC machine is 42 excepting screws and nuts.

Step 2: Required tools and skills

For this project you will need to have a set of screwdrivers and a set of hex keys or Allen keys, a drill for some extra holes, metal cutting saw to cut some custom parts, soldering station or soldering gun join the wires so they`ll have a good conductivity , and a multimeter.

You should have knowledge of basic electronics, how to solder and how to use a multimeter

Step 3: Ordering components

Picture of Ordering components
trapezoidal cylindrical nut.jpg
All the parts used to build were bought from local dealers, so i suggest you do the same if it`s cheaper (parts + transport). If not you ca find all the part on eBay.

The trapezoidal cylindrical nut was made in a local workshop.
podadoras1 month ago

Awesome instructable. Thanks for sharing it, I'd like to ask you how did you get the G code from a DXF file?

ujl podadoras9 days ago

There are programs like CamBam and SheetCam for example.

cliffyd22 days ago
Looks nice but a true instructable and diy person doesnt order every single component, bearing, rods, couplers etc. We use things from our project boxes, hardware store pieces things like that. We also don't have mills at our exposure for drilling holes. Should have bought one for the money you spent on this thing.
ujl cliffyd9 days ago

You may be right in your last comment, but I appreciate also the outer appearance and quality of things and am quite sure you can't get anything readymade nearly that money. Have you visited www.worldofcnc.com (Marchant Dice Ltd)? I think Berbefacac has got plenty of influences from them.

ujl9 days ago

I have for some time planned to build own router, too, and I definitely like your mini CNC router, when I now found the instructable for it. Very thoroughly documented, really. Thanks! The necessary machinings can be done in a local machining workshop. There seems to have been several questions about the accompanying dxf- and pdf-files earlier, too. I have got only four pdf-files through and allthough I can convert them to dxf and draw others myself, the missing ones would save time. There seems to to be no comments from berbefarac for past two years?

santas_bag7 months ago
Hi. I am having trouble downloading the DXF files from instructables. If I click on the DXF link, I get a 404 error. If I try to right click and download the file, they appear to be empty. Any help please? Thanks.
sgamil9 months ago
how called the red electronic board and how much it cost?
Hi berbefarac
There is a possiblity to reupload the dxf and pdf files missing from your instructable?
Thank you
dragos9001 year ago
Super,

Va rog, imi puteti trimite si mie planul CNC-ului pe mail. Va multumesc.

As fi interesat chiar si de achizitionarea unuia gata construit de dvs.


Va multumesc.
Dragos
dragos900@yahoo.com
Great job! A quick question, though;
I'm planning on using 20mm shafting for my machine, too, but I've heard that unsupported shafts can flex quite a bit. Do your shafts have large amounts of flexing, or is it rigid?
What feed rates can you achieve with this?
berbefarac (author)  matthew gowan3 years ago
As I said in step1, the maximum milling speed on X an Y axis is 2400mm/min. and on Z axis is 1800mm/min.
Fantastic machine, very creative and seems to work well. Just on thing, many posts on here ask for complete drawings (dxf/PDF) which you indicate are In sections 13 thru 16, and another post asked whether all drawings could be put in a zip file. This is a great idea, and since I'm keen to also use your fantastic design, could you post a direct link to the drawings or zip file of them?

Thanks

Simon
Hi. Does anyone have complete set of plans for this?

Those files are missing:
y_cross.pdf (185 KB)
shafts_and_threaded_rod.pdf

All others I already have.

Thnx

Kruno
berbefarac (author)  krunobalaneskovic2 years ago
Hi. I will do an update for this instructable and put again the dxf files and all other files needed for the building of the MiniCNC. Hopefuly I will do the update this month.
Berbefarac.
Hi, There are still no links to any files showing dimensions at all on the entire page. Could you add the links? Thank You
any news on the plans, am interested in using your design for a project in the uk, especially as your plans are metric. Please put theme up here or send me a link at stefan94@hotmail.co.uk Thanks for supporting the cnc community.
That will be wery nice. Thanx for your time Berbefarac.

Kruno
Hi. Thanks for this great how-to berbefarac. Anyone got the complete set of plans? My mail is jm_weinberg(at)hotmail.com if anyone can help me.
Cheers
Hi, did someone sent you the plans on your email adress?

Thnx
No, nobody.
gazelder1 year ago
Like some others I attempt to download the plans (in the steps indicated) and get challenged for name and password. I give that and nothing happens. It is as if we are getting trapped in an endless loop.

I'd love to see the plans. I'd love to consider making a similar machine but the SITE seems intent to keep us from doing just that. Has anyone downloaded the plans and or found another location that might be posting them?
Having same problem
bitbox1 year ago
This looks GREAT !

I'm looking for a reliable DIY CNC machine and this one seems to be a winner.
Thank you for sharing this.

Although I have one question: how can I download the related files (schematics?). You said earlier

"You can find all the drawings in .pdf and .dxf file format in steps 13 to 16."

But really couldn't locate them. I registered on the site (free account) but still no luck :-(

Could you please instruct me on how to find those files ?

Thanks a lot.
Georg2561 year ago
I didn't find the dfx files or plans. Where I can download it?
lkuziez96802 years ago
how much is the overall cost for this
yoshio62 years ago
Hey, very very nice work, i was planning to make a some what similar cnc, but mainly just following your z axis "layout". I was wondering if you think that the structure is strong? Or at least strong enough because I was thinking of adapting a forth and fifth axis to the head and liked how yours for the height advantage.
Thanks,
Weverton
mgimbel2 years ago
did you really have to use such big steppers, I mean for a lot less you could have got weaker steppers that are better suited for this task. I dont think you'll ever use their 425 oz. capacity
http://www.youtube.com/watch?v=-5ULOYQ7CuE
First of all, nicely done! As for the stepper sizing, they will only really be oversized if the power supply and driver are not capable of meeting their potential or they are capable of damaging the machine. If all of the electronics are well matched and the machine is free of binding and so forth, larger motors will allow much higher feed speeds to be attained reliably, especially while cutting. Materials that the builder is most likely to intend to mill out with this machine will be able to be be cut at high feed rates.
AD8042 years ago
I would like to try to build a machine based on your design. Do you have DXF drawings of the parts?
alan_cx2 years ago
Its a great project, but one thing is a bit annoying:

"For this project you will need to have a set of screwdrivers and a set of hex keys or Allen keys, a drill for some extra holes, metal cutting saw to cut some custom parts, soldering station or soldering gun join the wires so they`ll have a good conductivity , and a multimeter.

You should have knowledge of basic electronics, how to solder and how to use a multimeter"

Then later on, it turns out that a lathe and mill are required. Which rather changes things a bit.
Hi.
Great work on this.

Like to build one myself.

I tried to download plans but there are some things missing:

Can you send complete plans for Mini CNC router in one zipfile, PLEASE.
That would be realy helfull.
I have acces to alu-profiles in company where I work.

Thanx.
Kruno
Almost forgot, here is my mail:
krunobalaneskovic@yahoo.com

Thanx.

Greetings from Slovenia

juli4nteo2 years ago
In which step is the dxf file located? Doesn't seem to show up anywhere.
pra-win2 years ago
great instuctable... can u help me for software purpose? i,e. how & which soft ware u used. can i get the microcontroler and servo/ stepper motors prog? pls.......
akshaya20122 years ago
I WANT TO MAKE BUT SOME PRBLEM IN SHOFTERWARE SIDE , CAN U HELP ME ??
berbefarac (author)  akshaya20122 years ago
How can I help you?
how much it cost to build the cnc??
kenyer2 years ago
Grosav!
I like your project. You are one of the few that explain the software-part. Mach3 is rather expensive though. (546 lei and I'm still counting in old lei so than it is even more expensive :P 5.460.000) Do you know of any free or cheap cnc-software?
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