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Why not take the list that Mach uses ?
No good insisting that 'THIS' is the standard if your machine can't handle it.

Good book and really a bible is CNC Programming Handbook by Smid.
Bit pricey...

Lidl are doing some 250kg electric hoists with some form of jib [ not undone that box yet ] for £59.99
Already have one on the big CNC for lifting the vises and 4th axis on, both weight best end of...

Can you counterbalance it?

There is always my free DXF export plugin for sketchup - I would urge anyone to try it before buying the pro version - lots of people use it as part of their CNC software tool chain.

Link: Free...

YES ATX has control of the power supply, so it really does not sound like there is an issue with the PSU.

There should be an option to display Power On Self Test results to the screen, and to...

Not sure Mocha but I have a old power supply if you need it

James

For anything to be "placed on the market" i.e., sold anywhere in the EU it must comply with all relevant EU directives. It is not a worldwide thing. However for such things to be sold in the USA it...

Mocha take a look at Rogers build, this is similar to what you want to do, he told me he would have taken a more traditional approach if he were to do it again.
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Mocha sorry didn't see this before but Doing it this way means the X axis is unsupported from under neath and could flex.?

I would still do it with this configuration but lift the whole thing up...

No not in use, Like a lot of stuff I do and make it was designed to make best use of cheap available materials, in this case the machine was going to be for a guy who had bought some really cheap...

Well it don't really minimise flex as so much as it doesn't waste cutting area.! But another, better reason IMO, to minimise offset is to help with balance and reduce un-even loadings on both Y and X...

Heres the link to the thread i was thinking of and the software you are looking for is called PYSTROMO
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I have a Nostromo (N52) too and there is a thread somewhere on the net with a configuration tool to use it under EMC2.

As Lee has suggested I got the end portion (F) of my screws machined 25mm long to leave plenty of room for pulleys. You could do the same here if necessary.

If you do something a similar size to...

Ye I get the picture but I already did.!

To me it seems your not accounting enough for the fixed screw bearing mount and how it will mate with your proposed motor mounts, this will be the main...

Mocha,

When the mounts got made for my machine (the ones in the pic above) they were designed specifically for the said coupling, months later when I was ready to order my parts the coupling had...

Don't think you'll need as much room inside the box section as you think because you only really need say approx 10-12mm more than the length of the coupling because the shafts of both motor and...

Can you fit the coupling to the motor shaft then fit the ballscrew shaft into the coupling. If you fit them loosely you will have a bit of play to guage what length you need on the ballscrew shaft....

i got mine from here, you can stipulate the length etc then down load in various formats

http://www.boschrexroth.co.uk/country_units/europe/united_kingdom/en/index.jsp

no idea if they will...

There is a new range of gecko drives on the way with all sorts of goodies, including vector drives. Marriss has just posted details about the first one over on the zone, which is a pretty...

The main benefit of Gecko's is the microstep to full step morphing, plus they're small!

I've got 2 G251s in my lathe, and can't fault them.
I did think about getting the G540, but it wouldn't of...

I wouldn't drop the Gecko's I have a G540 here and it's beautifull bit of kit, thou that said I would go with 203v's much more flexable with extra growing room. That said I'm slightly bias because...

You'd probably only consider 6 if the loading was too great for 4. OTOH if the loading was too great you'd want a fatter rail. It's the separation that counts.

Locating ball nuts has 2 major...

Ok understand better now.! If using just a single centrally placed screw then yes the most accurate position is in the centre of the machine and as you approch the outer edges the gantry will flex...

For those interested, I thought I'd post my updated stiffness calculation spreadsheet in a new post. This spreadsheet is intended for a typical moving gantry cnc routing machine, and may help with...