# G02 and G03 codes

**URL:** <https://forum.sienci.com/t/g02-and-g03-codes/5694>\
**Category:** ❓ Question\
**Created:** [April 26, 2022, 6:26pm UTC](https://forum.sienci.com/t/g02-and-g03-codes/5694 "2022-04-26T18:26:21Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![Bill1](https://forum.sienci.com/letter_avatar_proxy/v4/letter/b/a8b319/32.png) [@Bill1](https://forum.sienci.com/u/Bill1)\
**Post date:** [April 26, 2022, 6:26pm UTC](https://forum.sienci.com/t/g02-and-g03-codes/5694/1 "2022-04-26T18:26:21Z")

</div>

Does the longmill support G02-G03 codes?  
Carbide Create evidently does not.  
Is there other software that does support those codes? Or does the MK2 not allow them

---

<div class="post-metadata">

**Author:** ![KGN](https://forum.sienci.com/letter_avatar_proxy/v4/letter/k/c77e96/32.png) [@KGN](https://forum.sienci.com/u/KGN)\
**Post date:** [May 2, 2022, 1:52pm UTC](https://forum.sienci.com/t/g02-and-g03-codes/5694/2 "2022-05-02T13:52:01Z")

</div>

Hi Bill,

GRBL (the firmware the Longmill runs) supports G2/G3 in a fashion. It converts all G2/G3 commands into small, linear movements that approximates the original arc - so it’s not true arc movement but it’s generally indistinguishable. It won’t throw an error if your program includes those movements.

Kevin

---

<div class="post-metadata">

**Author:** ![Bill1](https://forum.sienci.com/letter_avatar_proxy/v4/letter/b/a8b319/32.png) [@Bill1](https://forum.sienci.com/u/Bill1)\
**Post date:** [May 2, 2022, 5:26pm UTC](https://forum.sienci.com/t/g02-and-g03-codes/5694/3 "2022-05-02T17:26:23Z")

</div>

Thanks for the information. That’s what I’m hoping for.

---

<div class="post-metadata">

**Author:** ![gwilki](https://forum.sienci.com/user_avatar/forum.sienci.com/gwilki/32/366_2.png) [@gwilki](https://forum.sienci.com/u/gwilki)\
**Post date:** [May 2, 2022, 8:56pm UTC](https://forum.sienci.com/t/g02-and-g03-codes/5694/4 "2022-05-02T20:56:50Z")

</div>

As the original issue has been addressed, I’m closing this topic. If anyone else has a similar concern, feel free to start a new topic, which will ensure that it is addressed promptly.

---

<div class="post-metadata">

**Author:** ![gwilki](https://forum.sienci.com/user_avatar/forum.sienci.com/gwilki/32/366_2.png) [@gwilki](https://forum.sienci.com/u/gwilki)\
**Post date:** [May 2, 2022, 8:56pm UTC](https://forum.sienci.com/t/g02-and-g03-codes/5694/5 "2022-05-02T20:56:54Z")

</div>