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Been here done that. Best way is laser printing -and the setting that will put more toner- over the support sheet of adhesive labels (the one that is retired and not adhesive) because is so...

Dansal, if your drives are 6 leads are unipolar. If is the case, the faceplate shows amps for unipolar driving. If you wire it bipolar you only need a fraction of that current (about half) and there...

Sixpence: You will know what wires are center taps with a ohmmeter. The coils 'end to end' will have double resistance that the coils 'end to center tap', and not same coil ends will show infinite...

Bueno pues aqui al otro lado del charco hay quien tambien lee el foro..

Salu2!

What Plans Do we Want Cheaply?

PCB engraver, but is not in the poll..

Pros: It's Quick and Clean. Perfect if you do not know much about electronics.
Cons: Maybe not so cheap IMHO if you are able to scavenge some laserjets for steppers ;).

The board itself looks...

You always can wire unipolar steppers as bipolars, just ignoring the unipolar common central wires, and the behaviour is almost equal to bipolar. Vice versa is not possible.

Unipolar drivers only...

I do not speak a single word of German, but i think this (from the ebay page) is very understandable:

"Die Linearführungen bestehen aus ( Z+Y Achse ) 16 mm Stahlwellen"

hope it helps
/W

Bipolar are normally more powerful for the same volts and the same amperes, due the current flows throug double length of wire, so creates double stronger magnetic field (explained the easy way)....

Well, only my 2 cents but..

-750 mA is not much current
-No direct hooking to PC's (SPI interface, internal clock generator)

It seems useful if you will use it driven from a uC and the...

Mariss, is this only applicable to geckos or there are some rule of thumb useful for any stepper?

You can attach the steppers to the axis in really easy ways. You can find photos in the forum of people that has attached their steppers to the machine it with 4 bolts for clearance, an Alu plate,...

Well, if NM is New Mexico (excuse me but I do not know the acronyms for the US States, only guessing) i think you really will enjoy air conditioning for the summer, or the summer sun added to the...

I've downloaded it and the BDI is really a BDI (next, next, next..). My only issue is that the iso is not self bootable, at least in my year 95 p266 ;) but you only need to create a linux boot...

Well, as Hu and Balsaman said, if is a true AC motor, my post is not useful :rolleyes: but really I was thinking in the kind of sanding machine you can buy at any hardware store :D

/U

Instead IRFZ44N I've used IRLZ44N, wich is logic level Mosfet (Vgs=5V) in order to assure full ON when switching. Apart of that, characteristics are the same.

But do not expect to reach 47A...

Um, I've done a little google browsing and I've found these little collection:

http://www.epanorama.net/documents/lights/lightdimmer.html

http://us.st.com/stonline/books/pdf/docs/3566.pdf (look...

If 1hp~746W we are talking about 1150 to 2300W.. There are variable speed boxes for drills and similars, but do not know if they support that power.

If you do not find it, maybe a lamp dimmer...

It works. See http://www.cnczone.com/forums/showthread.php?s=&postid=26726#post26726 for my schematic with mosfets. I've tested with 5A steppers from an AT PSU and Master5 with no problem, but you...

And if you need unipolar driving but beefy amperes (success with 5A/winding, capable of more) maybe this can be useful:

http://www.cnczone.com/forums/showthread.php?s=&threadid=3553

Ive drawn the schematics for a cheap unipolar driver but capable of driving high ampere steppers, because I got some 1'3V/3'9A steppers and there is no real schematic able to drive that amount of...

well, if earthing the job does not solve the problem, maybe some kind of 'feedback' is going from Z to Y trough the material, are you able to guess a electric path between those elements? the...

I agree with the procedures and the products but.. what about protecting the mirror finish? what you recommend? I've done some OverClocking and there is no need to protect the mirror finish because...

If you finally get any of these, keep us informed, the international shipping sounds cheap too, so maybe if you recommend it I'll give a try.

/U

PS: They specify 4A 'total DC current' so I...

Lucky you ;) here in europe there isn't that kind of sellers, and if exist they normally only sell big volume. About a month ago I sent an email to bosch-rexroth in Spain asking for their extrusions...

1) to use a unipolar as a bipolar, just ignore the common wire. It doesn't matter if is 5 wires or 6 wires, just use the end coils wires and wire it to the driverboard like as bipolar.
2) if is AT...

Impressive... I can't find more words.

/U

In the DIY CNC wood routers you will find very useful info. As you said, very few plans, lot of 'like that idea'. You can find a lot of very useful photos at the members gallery too. Like you, lot of...

ahm.. I hope that you and your invitees enjoy your BBQ a lot!

/U

Thank you for the invitation, but like hardmill I live a bit far away from Australia :D just happens that here in Spain we are *geometrically* in the opposite side of the world so at least you...