Not sure what to do...

[DMW]

Thanks I appreciate the Comments!
I reckon for my first machine I might take EddyCurrents advice and go for the 3040 off ebay, though the 0.05mm repeatability is 25% of my target 0.2mm accuracy which is a bit worrying, but I hope it will be good to get my started?

Many thanks again
Dom

[EddyCurrent]

. . .though the 0.05mm repeatability is 25% of my target 0.2mm accuracy which is a bit worrying, but I hope it will be good to get my started?

No, it's 4 times more accurate than your target

[irving2008]

Thanks I appreciate the Comments!
I reckon for my first machine I might take EddyCurrents advice and go for the 3040 off ebay, though the 0.05mm repeatability is 25% of my target 0.2mm accuracy which is a bit worrying, but I hope it will be good to get my started?

Many thanks again
Dom

No, it's 4 times more accurate than your target

But don't believe everything you read on eBay either..... suggest you trawl threads here for 3040 owners and ask what they actually get...

[DMW]

surely it means that it will cut at 0.2mm+/-0.05mm
Which means two cuts that are supposed to be 0.2mm apart could be worst case 0.1mm as each cut can be 0.05mm in the wrong direction?

[EddyCurrent]

Maybe, or perhaps I've supped too much Grassmoor Dark Ale ? brain not fully functional

With regard to Irving's post have a read here; http://www.mycncuk.com/threads/6981-...3042#post53042

[Boyan Silyavski]

Low budget machines could lead only to frustration, i believe.

The Alu profiles are expensive for a build.

For me the cheapest CNC should have the following things as a must and then around them build the rest:

-water cooled spindle and VFD.
-reliable breakout board
-reliable motor drivers
-supported rails

Save some more money and buy a mini mill, at least you will definitely return your money producing some quality things.

All these 3040 and so are toys.

Sad but true.

[EddyCurrent]

silyavski, you may be correct in calling them toys, but the OP only want's to drill PCB's and some wood so I think they will do that. What he will learn from that experience will be invaluable in deciding the next step.