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Agreed, this can be a problem but like everything it depends on the design. Some use springs to compress the split nut and of course these flex under load. I am just using screws to adjust it with...

Clearly, yes some people have strong opinions.

Personally I think it depends on what you intend to use the machins for. I am using Delrin anti backlash nuts on my converted Chinese mill but then...

Haven't used them for a long time but these guys used to be helpful: Linton Plastic Moulders

For large quantities we used to go to Malaysia, not China. The quality was better.

Russell.

The voltage doesn't matter. I'ts the current that determines the size of the wires. 7/0.2 is rated at 1.4 Amps so is a bit light for your motors. It does depend on the motor rating which could be...

Sorry, I don't know what happened but for some reason a load of files have gone from my dropbox. Here they are again:
z-axis%20plan.dxf
Leadscrew_nuts.dxf
leadscrew%20support%20modified.dxf
...

I would like to break, or at least bend, (Par.4 Rule 4) to say a big thank you to the moderators for all the work they put into this forum.

Russell.

I've used Autocad since the 1980's (with version 1.4) but now use Draftsight. It does everything I want without the over-complication of the latest versions of Autocad. It's free and runs on...

I have one of these boards and can confirm that the motors are not powered up if it's not connected to a computer. A circuit diagram of the board can be found...

I'll certainly be using EMC2 when I get my mill up and running. Two main reasons: I have been a Linux user for many years and don't want to go back to using Windows. The other reason is cost...

As far as I can tell, and I've only played with it a little, EMC2 can do everything Mach3 does and more but it requires more work to get it going. If you are experienced with Linux I doubt you will...

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...