building it need advice on steppers and etc.

[RedLabel]

Well started the built , cut the parts roughly. I think it can be finished in a month.

Now these days I will purchase the kit and the rotozip. I need advice.

Planning to buy the kit from Xylotex. Should I stick with 269ozin steppers seen in the link

http://www.xylotex.com/3AxSysKit.htm

or go for the 425 ozin steppers? I also plan to go for an improved machine so thinking about the future.

Another thing is there is a ready kit which includes cables and connector.

http://www.xylotex.com/3AxisReadyKit.htm

Well does it worth the extra 75$(22ga conductor wires doesn't seem that expensive neither the parralel extension cable).

And finally which rotozip to buy, can you give me some pointers and model number?

Thanks,

[NC Cams]

If you are wiring capable, build it. If you are electrnically challenged, buy it and learn how to run it AS IS.

You can always upgrade it later when/if you see the need...

The hard part is getting something to run. Don't add the complexity of re-engineering something if you don't have to...

Why?

If/when it doesn't work, was it because of bad design (easy to do) or bad parts (possible as well) or poor execution (possible and most probable either way you go)???

[ger21]

If the leadscrews your using are 10 turns per inch or more, I'd go with the 269oz steppers. If your using 5 turns per inch or less, I'd go with the 425oz.

[RedLabel]

NC cams I can wire things easily don't worry. The problem is finding the right connectors and wires. You know I don't wanna search for every piece since time is an issue. If cables etc. are 20$ in total I definitely don't want to spend an extra 55$ since the job seems relatively easy. But maybe there are other things which are hard to find...

ger21 thanks for the advice, I'll look at the leadscrews right away...

Any suggestions on rotozip model and tips?

Thanks a lot

[NC Cams]

Belden makes shielded wires in various conductor combos.

Mouser and Digikey have darn near ANY connector available to the civilized world and they probably stock the Belden wire.

We've even bought long pre-made extension cables (DB9, DB25, etc) and sectioned to get a nice premade, custom look cable in an easy fashion.

Things are much easier today than it was in the early 80's when I got involved with hobby electronics. Used to have to spend hours going thru the surplus house (ESI in Cleveland, OH) to find "make do" supplies.

Goodness, what a phone, internet and a credit card can/will do anymore.... With PCB Express, their free software and a credit card, you can even get a custom proto PCB in 3-4 days.

Is this a great country or what????

[randyf1965]

HAHAHA I am planning on using DB9 connectors on my controller and at the steppers on my router....... BUT never thought of using a premade serial cable!

The connectors I am buying are rated at 5amps per pin...... and I am using my steppers at less than that... so will the cables handle it (would assume so since 22ga can carry 7 amps)

[NC Cams]

DB9 is fin for signal leads but NOT for 7 amps to power a motor - too much voltage drop over a long length.

Better off using 12 - 14 ga, ultra fine stranded fro improved flezibility.

[randyf1965]

yep, just found 1 site that lists the gauge of wire in their db9... 28ga... good for 1.4amps

[RedLabel]

any suggestions about rotozip?

[NC Cams]

Before you get carried away with trying to use a serial cable to power a motor, read this:

What gage wire to use:
What gage wire?

http://www.cnczone.com/forums/showth...480#post136480

JUST BECAUSE A PIN/WIRE IS RATED FOR WHATEVER AMPS IT IS RATED AT, THAT DOESN"T MEAN YOU RUN IT AT THAT VALUE!!!

[RedLabel]

Thanks for the info on wiring.

May I also have suggestions about the cuting tool too? I want to use rotozip but which model I should choose, for durability, speed and power.

Thanks again guys...

[RedLabel]

Here is the rotozips website. You may also advice other brands but advice pls, I want to use sth more durable then dremel for the machine...

http://www.rotozip.com/