New build - Steel - 3 Axis initially then conversion to 4 axis.

[Tom J]

Looking goid mate! Tack welds are the way to go. And lots of clamping. I would have got a piece of say 35x70mm box tube and clamped it in several places to the flat bar piece you were working on. Then going from the outsides in to the middle as your box frame will also slightly warp from the welds. Tack everything first then repeat the clamping process all over again with your filler welds.

It's hard with long runs like that. Partly the reason bojan S uses C channel for his bed. Although I find welding much easier, drilling and bolting would have given a better result.

Whats the link for your thread?

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Here is my latest build
http://www.mycncuk.com/threads/9073-...-router-3-axis
Small work area but was aiming for accuracy. Box 100x100 end up with ~0.07mm that is why i build again fixed gantry one, link:
http://www.mycncuk.com/threads/10459...teel-frame-MK2
Boyan is master in precision fallow him - he gets 0.02mm wich is more than my chinese mill

[JAZZCNC]

Boyan is master in precision fallow him - he gets 0.02mm wich is more than my chinese mill

Ye and I'm father Xmas.!!

[Tom J]

Ye and I'm father Xmas.!!

do not be jealous Dean, results speaks itself. And on the end of the he takes your advises like we all do:)

[JAZZCNC]

do not be jealous Dean, results speaks itself. And on the end of the he takes your advises like we all do:)

I'm not into jealousy but I am realist and know there's no way he's measuring 0.02mm over 3000mm like he's claimed in the past or even over shorter distance.!! . . . Ask me why.?

Ok I'll tell you.!! . . . . . Would be bloody impossible because he's using C7 ballscrews From China which at best will only give 0.05mm over 300mm. Then throw in few belts/pulleys etc and this goes down further.

So who's fooling who.?

[Slixxor]

I'm not into jealousy but I am realist and know there's no way he's measuring 0.02mm over 3000mm like he's claimed in the past or even over shorter distance.!! . . . Ask me why.?

Ok I'll tell you.!! . . . . . Would be bloody impossible because he's using C7 ballscrews From China which at best will only give 0.05mm over 300mm. Then throw in few belts/pulleys etc and this goes down further.

So who's fooling who.?

When did I make that claim? This is my first build and I don't see that claim made :/? I think you grossly underestimate my realism..

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[JAZZCNC]

When did I make that claim? This is my first build and I don't see that claim made :/? I think you grossly underestimate my realism..

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Crossed purposes wasn't talking about you with that statement.

I just like the way you assumed I needed to be more careful. What exactly gives you the impression I haven't been?

Because I'm not blind and can see there's been no machine work done on any of those surfaces or any thought regards rails being on same plane etc.
I've never yet seen piece of angle iron that is perfectly flat or 90deg and you are bolting straight to the face of one.

Then we have the heat put into the metal which can clearly be seen. You can Stitch it with pigeon Shit and beat the shite out of it all you like but it will still be warped or twisted in some way unless you take other steps to correct it.

All these little things will bite and like I've said your lucky your using round rail. Profiled linear rail would just not tolerate this level of in accuracy and bind up solid.

Edit: Just to be anal and prove my point look at this picture and tell me whats wrong.?

[Slixxor]

Crossed purposes wasn't talking about you with that statement.



Because I'm not blind and can see there's been no machine work done on any of those surfaces or any thought regards rails being on same plane etc.
I've never yet seen piece of angle iron that is perfectly flat or 90deg and you are bolting straight to the face of one.

Then we have the heat put into the metal which can clearly be seen. You can Stitch it with pigeon Shit and beat the shite out of it all you like but it will still be warped or twisted in some way unless you take other steps to correct it.

All these little things will bite and like I've said your lucky your using round rail. Profiled linear rail would just not tolerate this level of in accuracy and bind up solid.

Edit: Just to be anal and prove my point look at this picture and tell me whats wrong.?

You are referring to me shaping it? I don't see the problem? what are you suggesting? (genuinely asking)

[Clive S]

When did I make that claim? This is my first build and I don't see that claim made :/? I think you grossly underestimate my realism..

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If you read it again Dean was not referring to you with the above It was a claim made by another on the forum.

Hence the reason I will see how it goes when it's done. I've endeavoured to make it as square as possible on all axes and feel comfortable that I've managed to achieve that within the best of my ability.

At the end of the day that is all anybody can do. Looking forward to seeing the first cut

[Slixxor]

You sir have a much better personality. I think JAZZCNC needs a holiday by the sounds.. Clive, legend as always ;)