# Accuracy of cut part's (solved)

**URL:** <https://forum.arcdroidcnc.com/t/accuracy-of-cut-parts-solved/5013>\
**Category:** General Discussion\
**Created:** [February 16, 2025, 4:31pm UTC](https://forum.arcdroidcnc.com/t/accuracy-of-cut-parts-solved/5013 "2025-02-16T16:31:34Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Dieseldog](https://avatars.discourse-cdn.com/v4/letter/d/90db22/32.png) [@Dieseldog](https://forum.arcdroidcnc.com/u/Dieseldog)\
**Post date:** [February 16, 2025, 4:31pm UTC](https://forum.arcdroidcnc.com/t/accuracy-of-cut-parts-solved/5013/1 "2025-02-16T16:31:34Z")

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Hi All,

Finally got the droid set up and working, however after trying a few test cuts, (rectangle 50mm x 25mm x 3mm) using the l-cut which is outside i believe, the rectangles are coming out at 49mm x 23mm x 3mm. Kerf is set at 0, the part was drawn within the handheld unit, i’m not sure how to get the accuracy correct, can anyone help?

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**Author:** ![Matt\_UK](https://avatars.discourse-cdn.com/v4/letter/m/65b543/32.png) [@Matt\_UK](https://forum.arcdroidcnc.com/u/Matt_UK)\
**Post date:** [February 16, 2025, 4:42pm UTC](https://forum.arcdroidcnc.com/t/accuracy-of-cut-parts-solved/5013/2 "2025-02-16T16:42:23Z")

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set kerf to be 0.5mm

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**Author:** ![Dieseldog](https://avatars.discourse-cdn.com/v4/letter/d/90db22/32.png) [@Dieseldog](https://forum.arcdroidcnc.com/u/Dieseldog)\
**Post date:** [February 16, 2025, 4:49pm UTC](https://forum.arcdroidcnc.com/t/accuracy-of-cut-parts-solved/5013/3 "2025-02-16T16:49:20Z")

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not a noticeable difference i did try it at 10 and still coming out the same size! thanks for the response

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**Author:** ![Dieseldog](https://avatars.discourse-cdn.com/v4/letter/d/90db22/32.png) [@Dieseldog](https://forum.arcdroidcnc.com/u/Dieseldog)\
**Post date:** [February 16, 2025, 5:02pm UTC](https://forum.arcdroidcnc.com/t/accuracy-of-cut-parts-solved/5013/4 "2025-02-16T17:02:19Z")

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My mistake was editing the same part but for some reason it was reverting back to the original hence the same results, i deleted the part started a fresh and set kerf to 1.25 and got the result i was happy with, thanks for the help @Matt_UK you gave me the starting point i needed.  
Happy cutting 😄

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**Author:** ![plongson](https://avatars.discourse-cdn.com/v4/letter/p/96bed5/32.png) [@plongson](https://forum.arcdroidcnc.com/u/plongson)\
**Post date:** [February 21, 2025, 1:16pm UTC](https://forum.arcdroidcnc.com/t/accuracy-of-cut-parts-solved/5013/5 "2025-02-21T13:16:48Z")

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I’ve red where kerf should be set about 30% of your tip diameter…1 mm tip= kerf 1.30  
Works for me…

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**Author:** ![Dieseldog](https://avatars.discourse-cdn.com/v4/letter/d/90db22/32.png) [@Dieseldog](https://forum.arcdroidcnc.com/u/Dieseldog)\
**Post date:** [February 21, 2025, 3:21pm UTC](https://forum.arcdroidcnc.com/t/accuracy-of-cut-parts-solved/5013/6 "2025-02-21T15:21:35Z")

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Thanks @plongson I will save that thought and give it try.