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Hi all,
Looking around to build a small, cheap and simple CNC for home use cutting out mainly light plastics and timber. The one on Instructables seems quite good and is in my price and size range.
http://www.instructables.com/id/How-...-Cheaply-and-/
I dont have easy access to all the belt drive gear here in Aus so im going to use Acme rod and some anti backlash nuts - Anyone have any idea on what size I should get for this type of machine? I was reading a while ago that maybe 1/2" 10TPI 5 start will be ok, does this sound about right?
Has anyone actually built this design or have any comments on it? The workable space is a tiny bit small for my use so I am extending the bed to fit in another 12" of usable area
Thanks
John
They recommend 100 oz-in motors. For 1/2-10 5 start, you'll want 300oz motors. HobbyCNC sells those as well as the small ones. Another good screw choice would be 1/2-8 2 start. Not quite as fast, but plenty fast for a machine that size, and will give you a bit more force, and let you use slightly smaller motors. But I'd still recommend about 250oz in if using multi start screws. Also, on a machine that small, you can probably get away with 3/8" screws, which may be quite a bit cheaper.
Gerry
Mach3 2010 Screenset
http://home.comcast.net/~cncwoodworker/2010.html
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
3/8" sounss good, will try and find a source for it locally.
I originally planned on getting larger motors incase i ever want a bigger machine, can reuse electronics. Only problem with this design is i need to get a 4 axis pro board, 2 for the Y (i think its Y)
what are your thoughts on the design itself?
John
It looks OK for a starter machine. But I didn't look too closely.
The two motors is not a problem, it's preferable. Driving it with a single motor will typically allow racking of the gantry.
Gerry
Mach3 2010 Screenset
http://home.comcast.net/~cncwoodworker/2010.html
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
John,
When I started looking into which design to build, this was one of them. After I downloaded the .pdf's and looked at the pieces I had to cut, I changed my mind. Even the designer admits he had his pieces CNC cut because he printed his stuff the wrong scale!
I ended up spending a little more money for plans, and it worked out better for me because almost every part was a straight cut, so it simplified construction. Also it utilized wood, which I felt was a bit stronger than MDF.
What plans did you end up buying?Originally Posted by louieatienza
I plan to get the panels lasercut for accuracy, I also like the look of the DIYLILCNC, www.diylilcnc.org machine
I think i will need to read up on both and see which works out better
Here's my build...
First CNC, modded Solsylva plans, finally!
I have been looking at this build for a while over on the instructables web site. It looks like a good maching for starters. I think i am going to ry to build it when i get my shop rearranged (just moved into a new shop). i will keep you posted on my progress alogn the way
Any status on an oomlout build? I'm also looking at the plans. Of course, you can't download them any more unless your a PRO at instructibles. Bummer. I'm still longing to do a starter build.
I'm in the middle of building one, finished the mechanical parts yesterday and am getting ready to start on the electronics. There are some minor mistakes on the plan, holes which aren't shown, but otherwise it isn't hard to build.
Built this about 1.5 years ago and for the time and money not worth it IMHO. You need to cut every part perfect or you'll have a mess. It was a fun project and you will learn a lot but there are much simpler designs that are more cost effective.
@ dogsop - I never had a problem with missing holes on mine. Everything was fine.
I'm looking at the DIYLILCNC now. Seems pretty cool
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