I NeeD HeLp PLease AM882 a good choise

[EddyCurrent]

@Jonathan, I agree there is no need to buy more than you require and I'm not an expert on all the different drivers but for £36 I'm not taking any chances. I once read somewhere a long time ago about a bloke buying power tools, he said he found it always paid to select the model you could afford then buy the next model up.

[jpsicilia]

Thanks for help me guys, really.
I bought the screws today, one less thing. Jonathan I can only buy in aliexpress and eBay, I could not find the nema23 you recommended, I have looked similar but I dont know what I need to look about the inductance, could you tell me what models I shoud look.
And about the Linear Motion they offer me a similar exchangeable for u$s 622 usd instead of the hgr15 for 850 uss, what do you think? should buy it or go for hgr15?

[Jonathan]

I bought the screws today, one less thing. Jonathan I can only buy in aliexpress and eBay

Then you're basically stuck if you want them for a reasonable price. Will CNC4YOU not ship to your country? If not, then you need to find 3Nm (425oz-in) motors with 3.2mH phase inductance. They generally have 4.2A current rating.

And about the Linear Motion they offer me a similar exchangeable for u$s 622 usd instead of the hgr15 for 850 uss, what do you think? should buy it or go for hgr15?

It sounds like they're offering you a different brand of rail, e.g. LG or TBI, which is probably fine. Not many people here have bought them yet, so it's hard to compare the quality and even then the differences are likely to be so small it's hard to quantify. The TBI brand rails I got from aliexpress seem fine, so next time I need some I doubt I'll get Hiwin.

[JAZZCNC]

It sounds like they're offering you a different brand of rail, e.g. LG or TBI, which is probably fine. Not many people here have bought them yet, so it's hard to compare the quality and even then the differences are likely to be so small it's hard to quantify. The TBI brand rails I got from aliexpress seem fine, so next time I need some I doubt I'll get Hiwin.

I've had several sets of TBI linear rails now and they have been fine and while not quite smooth has Hi-win they are still more than good enough and lot cheaper. I've been using SBC Linear rails n.mnow for years and they have been good never given me any trouble, I run them on my own machine and have punished them quite a bit so know they can stand hard life but the TBI feel and work just has good so I've no reason to doubt they will be just has good.!

Chai is now selling them for those that don't know.!!

[jpsicilia]

I bought the rails to linearmotionbearings2008 in ebay usa from a person call Chai ,linearmotionbearings2008 on eBay , I believe its the same guy. He offer the linear rails.

[jpsicilia]

Hello again, Jonathan I send a mail to CNC4YOU to ask if they can ship to Argentina, anyway I was looking for the NEMA23 you mentioned and found this model Power Motor! Wantai Nema23 Stepper Motor WT57STH115 4204A 428oz in 4.2A Medical Automation Imaging Printing-in Stepper Motor from Industry & Business on Aliexpress.com I think its correct but I want to be sure, and I also found this offer http://www.ebay.com/itm/Germany-Ship...item1e7677983f ,I dont know if DQ542MA drivers work for me or I shoud go for MT880 for the x axis and combine it with other cheaper for the other axes? Really Its easy buy all together but as I sed before I dont now anithing about electronic. Thanks for your time and advice.

[Jonathan]

Hello again, Jonathan I send a mail to CNC4YOU to ask if they can ship to Argentina, anyway I was looking for the NEMA23 you mentioned and found this model Power Motor! Wantai Nema23 Stepper Motor WT57STH115 4204A 428oz in 4.2A Medical Automation Imaging Printing-in Stepper Motor from Industry & Business on Aliexpress.com I think its correct but I want to be sure

The inductance is marginally worse than the CNC4YOU (and Zapp) motors, but you're unlikely to notice much difference assuming they do actually meet the specifications. I measured the inductance of some of the motors I got from CNC4YOU and it was within tolerance.

, and I also found this offer �Germany SHIP Free SHIP】4Axis Nema23 Wantai Stepper Motor 425oz in 4 2A CNC Mill | eBay,I dont know if DQ542MA drivers work for me

Definately don't buy those drivers. They're only rated for 50V, so they've used 36V power supplies which is far too low. As you increase the speed required from a stepper motor, the supply voltage must be increased to maintain a high torque output. It's therefore best to run the motors you've chosen (or the CNC4You / Zapp ones) at around 70V. You therefore need to pick drivers which are rated for 80V - e.g. DQ860MA, AM882 and no doubt others which are available from Aliexpress.

shoud go for MT880 for the x axis and combine it with other cheaper for the other axes? Really Its easy buy all together but as I sed before I dont now anithing about electronic.

Up to you, so long as they're rated for 80V.

[jpsicilia]

Then you're basically stuck if you want them for a reasonable price. Will CNC4YOU not ship to your country? If not, then you need to find 3Nm (425oz-in) motors with 3.2mH phase inductance. They generally have 4.2A current rating.



It sounds like they're offering you a different brand of rail, e.g. LG or TBI, which is probably fine. Not many people here have bought them yet, so it's hard to compare the quality and even then the differences are likely to be so small it's hard to quantify. The TBI brand rails I got from aliexpress seem fine, so next time I need some I doubt I'll get Hiwin.

Hello guys I try to follow your advice in all the buys. I bought this models, wt57sth115-4204a, and I find this on internet .
I ask for low inductance as Jonathan told me. Ibought this in October 2013 and after 1 month of travel and the rest of the time in ARGENTINA CUSTOM y recived this. Some times I want to leave this country!! But my family is here.
Thank guys I really apreciate your time.

[JAZZCNC]

I ask for low inductance as Jonathan told me.

Great good to see you took Jons good advise. Those motors while still a little higher than some motors of same power are still have low enough impedance not to be restrictive.

I got your PM and tomorrow will be intouch.

[jpsicilia]

Ok I dindt buy stop movements and other stuff, please give me the shopping list with all the things yo think ill need, Thanks