# Question on Accuracy of 1000mm version

**URL:** <https://community.inventables.com/t/question-on-accuracy-of-1000mm-version/17362>\
**Category:** X-Carve\
**Created:** [December 16, 2015, 2:06am UTC](https://community.inventables.com/t/question-on-accuracy-of-1000mm-version/17362 "2015-12-16T02:06:20Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![MatSchwartz](https://avatars.discourse-cdn.com/v4/letter/m/f08c70/32.png) [@MatSchwartz](https://community.inventables.com/u/MatSchwartz)\
**Post date:** [December 16, 2015, 2:06am UTC](https://community.inventables.com/t/question-on-accuracy-of-1000mm-version/17362/1 "2015-12-16T02:06:21Z")

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Hi,

I would like to buy the 1000mm xcarve version, but would like to get a better sense of its accuracy. I have seen a few posts on showing the pcb accuracy, but I would like to compare against what I currently have. I have now a small cnc setup with a good deal of backlash. This is an image I have cut, with the total dimensions 13x13m and 0.5mm endmill.

 ![](https://canada1.discourse-cdn.com/flex009/uploads/inventables/original/2X/3/3566158df5b04c9c8c8d246ca2683e26b3965597.jpg)

As you can see from this dxf file [DXF File](https://drive.google.com/file/d/0B_hYD7szqqMBLWJjbUx1RFFWbEE/view?usp=sharing) (filename is 15x15 but I cut it at 13), The outside rectangles should be square, the loops should be round (now it looks like on side is cut shorter) and the spacing is equal.

I know its a lot to ask, but if someone has a 1000mm and 0.5mm bit, could you try to cut this and post a photo? I could give a few dollars to cover materials.

Or if anyone intuitively can let me know if I should expect the same quality.

Thanks,

Mat

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**Author:** ![RobertA\_Rieke](https://yyz1.discourse-cdn.com/flex009/user_avatar/community.inventables.com/roberta_rieke/32/32723_2.png) [@RobertA\_Rieke](https://community.inventables.com/u/RobertA_Rieke)\
**Post date:** [December 16, 2015, 2:11am UTC](https://community.inventables.com/t/question-on-accuracy-of-1000mm-version/17362/2 "2015-12-16T02:11:14Z")

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I don’t have the bit or materials, but after I got mine dialed in I was able to get .003" accuracy in X and Y, and .001" in Z. I can continually count on .005" accuracy, and that’s usually just an indication to me that I need to make an adjustment and re-calibrate.

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**Author:** ![MatSchwartz](https://avatars.discourse-cdn.com/v4/letter/m/f08c70/32.png) [@MatSchwartz](https://community.inventables.com/u/MatSchwartz)\
**Post date:** [December 16, 2015, 2:33am UTC](https://community.inventables.com/t/question-on-accuracy-of-1000mm-version/17362/3 "2015-12-16T02:33:15Z")

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Thanks Robert, when you say .005", do you mean +/-, so I could be getting up to .01" variations, or all parts are within .005" tolerance?

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**Author:** ![RobertA\_Rieke](https://yyz1.discourse-cdn.com/flex009/user_avatar/community.inventables.com/roberta_rieke/32/32723_2.png) [@RobertA\_Rieke](https://community.inventables.com/u/RobertA_Rieke)\
**Post date:** [December 16, 2015, 3:16am UTC](https://community.inventables.com/t/question-on-accuracy-of-1000mm-version/17362/4 "2015-12-16T03:16:18Z")

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Usually they’re within .005" tolerance. Anything larger than that is usually due to me assuming the bit diameter (1/8" bits are usually +.001/-.005") or pushing the machine to where there’s excessive bit deflection.

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<div class="post-metadata">

**Author:** ![MatSchwartz](https://avatars.discourse-cdn.com/v4/letter/m/f08c70/32.png) [@MatSchwartz](https://community.inventables.com/u/MatSchwartz)\
**Post date:** [December 16, 2015, 3:22am UTC](https://community.inventables.com/t/question-on-accuracy-of-1000mm-version/17362/5 "2015-12-16T03:22:39Z")

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This is good to know. Thank you.