# What could be causing this? **URL:** \ **Category:** Troubleshooting\ **Created:** [April 25, 2023, 1:51am UTC](https://community.inventables.com/t/what-could-be-causing-this/143072 "2023-04-25T01:51:39Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![ClaudeGoode](https://avatars.discourse-cdn.com/v4/letter/c/77aa72/32.png) [@ClaudeGoode](https://community.inventables.com/u/ClaudeGoode)\ **Post date:** [April 25, 2023, 1:51am UTC](https://community.inventables.com/t/what-could-be-causing-this/143072/1 "2023-04-25T01:51:39Z")
First time cutting this SVG and I’ve come across a problem. There seems to be a line between the first pass and the second pass of the roughing cut. I’m using a brand new Spe 1/8 down cut bit with the Easel recommended settings. I’m following that up with a new Spe 60-degree V-bit for the finishing pass. Chips are coming out nice and it appears that everything is working properly. Is there something that I’m missing? ![20230424_213302](https://canada1.discourse-cdn.com/flex009/uploads/inventables/original/3X/a/3/a34508b4421c08fec96faebcec709d686b1b8f2b.jpeg) ![20230424_212825](https://canada1.discourse-cdn.com/flex009/uploads/inventables/original/3X/5/e/5eecb3c9f983f490e428494167f1232a0a7cb3f8.jpeg) ![20230424_213411](https://canada1.discourse-cdn.com/flex009/uploads/inventables/original/3X/b/a/ba4a9d37c40a37d0d0de1164a23dec60dbfe3421.jpeg) ---
**Author:** ![WayneHall](https://yyz1.discourse-cdn.com/flex009/user_avatar/community.inventables.com/waynehall/32/84646_2.png) [@WayneHall](https://community.inventables.com/u/WayneHall)\ **Post date:** [April 25, 2023, 2:11am UTC](https://community.inventables.com/t/what-could-be-causing-this/143072/2 "2023-04-25T02:11:39Z")
Looks like your xy zero may have been lost or moved during the bit change. ---
**Author:** ![ClaudeGoode](https://avatars.discourse-cdn.com/v4/letter/c/77aa72/32.png) [@ClaudeGoode](https://community.inventables.com/u/ClaudeGoode)\ **Post date:** [April 25, 2023, 2:56am UTC](https://community.inventables.com/t/what-could-be-causing-this/143072/3 "2023-04-25T02:56:01Z")
Thanks Wayne, I guess that is a possibility. I did re-probe after changing the bit but maybe there were some chips under the probe or something. I’m going to recarve the piece but pay a little more attention to getting the zero right. ---
**Author:** ![SethCNC](https://yyz1.discourse-cdn.com/flex009/user_avatar/community.inventables.com/sethcnc/32/87515_2.png) [@SethCNC](https://community.inventables.com/u/SethCNC)\ **Post date:** [April 25, 2023, 4:26am UTC](https://community.inventables.com/t/what-could-be-causing-this/143072/4 "2023-04-25T04:26:21Z")
> [@ClaudeGoode](#): > > I did re-probe after changing the bit but maybe there were some chips under the probe or something > [@WayneHall](#): > > your xy zero may have been lost or moved during the bit change. @ClaudeGoode Wayne was referring to the X,Y zero, not the Z zero… However it is possible that all 3 are off from bit to bit. Here’s the official 2 bit method. > **[Two-Stage Carves (Roughing and Detail Carves)](https://inventables.zendesk.com/hc/en-us/articles/360012453174-Two-Stage-Carves-Roughing-and-Detail-Carves-)** > > Two-stage carves, or roughing/detail carves, allow you to use two bits on the same project. This allows you to carve as much of the project as possible with a larger (roughing) bit and then swap in... However IF you do this you can skip the whole locking button and re-homing process. [![](https://img.youtube.com/vi/dhj70KKyP5I/maxresdefault.jpg "How to fix X-Carve Lock Motors Fault For Stress Free Bit Changes") ](https://www.youtube.com/watch?v=dhj70KKyP5I) Oh and IF this Xcarve has the newest Z axis, then it’s also possible that you’re hitting the lower limit of travel with the V bit resulting in that lip… Is this the Standard X-Carve or the X-Carve Pro you’re using? [![](https://img.youtube.com/vi/n4h_Nk4Umyg/maxresdefault.jpg "New X-Carve CNC Doesn't Cut Right? 5 Minute Fix") ](https://www.youtube.com/watch?v=n4h_Nk4Umyg) ---
**Author:** ![ClaudeGoode](https://avatars.discourse-cdn.com/v4/letter/c/77aa72/32.png) [@ClaudeGoode](https://community.inventables.com/u/ClaudeGoode)\ **Post date:** [April 25, 2023, 7:32pm UTC](https://community.inventables.com/t/what-could-be-causing-this/143072/5 "2023-04-25T19:32:12Z")
Thanks Seth! I misspoke. I was confusing the X,Y axis and the Z. I am going to re-carve to see if I can be a little more careful when changing the bits to prevent moving the spindle and messing up the zero. Thanks for the videos. ---
**Author:** ![ClaudeGoode](https://avatars.discourse-cdn.com/v4/letter/c/77aa72/32.png) [@ClaudeGoode](https://community.inventables.com/u/ClaudeGoode)\ **Post date:** [April 28, 2023, 8:51pm UTC](https://community.inventables.com/t/what-could-be-causing-this/143072/6 "2023-04-28T20:51:37Z")
Wayne and Seth, I re-carved paying close attention to not disturbing the position of the spindle when changing the bit and it carved perfectly this time. Thank you both for your help. I really appreciate the more experienced woodworkers out there helping the new guys like me. It’s people like you that makes this community what it is. Thanks again!