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PostPosted: Tue Dec 11, 2012 11:58 am 
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Cocobolo
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Joined: Tue Jun 30, 2009 3:20 pm
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Focus: Build
what do you folks think about this kit?

http://www.ebay.com/itm/3-Axis-Nema-34- ... 0677990615?


would these steppers have enough stones to handle milling out a neck with a .375 or a .50 dia ball endmill, contour a fretboard, mill out a bridge, and handle minor engraving? I have a 1.5 hp variable speed Hitachi router that i could use as a spindle and am considering either building or buying a basic gantry machine.

I'm not new to cnc but am new to home router cnc machines -i'd have no problem on the cad-cam/programming end of things.

opinions?

thanks


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PostPosted: Tue Dec 11, 2012 4:05 pm 
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The driver board is junk. I've never actually used one but everyone who has says the TB-6560 is garbage and you'll have to buy a new one soon when it smokes.

Gecko G540 is a very safe bet but it costs more .

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PostPosted: Tue Dec 11, 2012 4:37 pm 
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Overkill.

Seriously.

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PostPosted: Tue Dec 11, 2012 4:53 pm 
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Don, I suspect it's actually worse than overkill - they're 878" motors with only a 24v supply and 3.5A max current. Those probably would need closer to 70v to get any sort of performance out of them.

The true point to consider is that without a lot more information about the router, one can't say how it's going to perform. Lead, gantry weight, drive method etc. is going to have a huge influence on the drive selection.

Rule of thumb is to buy electrics & electronics last, not first.

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Last edited by Andy Birko on Tue Dec 11, 2012 6:18 pm, edited 1 time in total.

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PostPosted: Tue Dec 11, 2012 5:04 pm 
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Cocobolo
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thanks for the input guys!


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PostPosted: Tue Dec 11, 2012 5:44 pm 
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Andy Birko wrote:
Rule of thumb is to buy electronics & electronics last, not first.


Yes. Good rule. You need to actually design a machine (assuming you're building one) and then figure out if steppers or servos are actually better for what you are trying to do. I have 600 oz/in stepper motors on my cnc, an sometimes I think they're overkill. I probably could have gone with something closer to 300 or 400 oz/in motors, but I didn't realize just how much power they have. The Gecko vampires are great drives though. If I had it to do over again.....servos, Granite drives.

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PostPosted: Wed Jul 16, 2014 3:11 am 
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Cocobolo
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so there arent any good kits on ebay? I live in europe and the gecko kit will have way too much of a shipping cost plus custom fees....I am intereated in buing something cheap but not garbage maybe something like this?http://m.ebay.co.uk/itm/131021116511



These users thanked the author pikolo for the post: mike sandor (Sun Jul 20, 2014 7:53 pm)
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PostPosted: Sat Jul 19, 2014 12:32 pm 
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Cocobolo
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Joined: Sun Jul 29, 2007 4:11 am
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First name: Rick
Last Name: Hubka
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Zip/Postal Code: V0R 1K1
Country: Canada
Focus: Build
Status: Amateur
Most the guys from Joes's CNC forum buy from this company.
Way more expensive but top quality and great service.
It's gives you something to compare.
http://www.cncrouterparts.com/3-axis-di ... -p-74.html

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PostPosted: Mon Jul 28, 2014 9:03 pm 
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Walnut
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First name: Dan
Last Name: Holzrichter
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Zip/Postal Code: 78737
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I have bought a lot of CNC stuff from cncrouterparts and it's all worked out well. One thing about the board you mentioned. It has a flawed design, and can be fixed but there are others available for not much more so it's not worth the trouble. http://www.homediystuff.com/fixing-a-ch ... 560-chips/


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PostPosted: Tue Jul 29, 2014 3:26 am 
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I would buy it from them but I live in Greece an the custom would be alot money plus shipping If in wre in europe I would be ok...so any other source maybe or other peaces that I can find on ebay.co.uk?


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PostPosted: Fri Aug 15, 2014 4:36 pm 
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Brazilian Rosewood
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Go on AliExpress, find someone with a high rating, buy from them. I only go on eBay for specialty stuff I can't find on there, like high end encoders or linear motors.

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PostPosted: Sun Aug 17, 2014 10:00 pm 
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Cocobolo
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could you please recommend ?


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