# ATC Dropping tool early **URL:** \ **Category:** PwnCNC ATC System\ **Created:** [May 23, 2025, 3:13pm UTC](https://forum.pwncnc.com/t/atc-dropping-tool-early/3123 "2025-05-23T15:13:54Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![dbdunagan](https://avatars.discourse-cdn.com/v4/letter/d/49beb7/32.png) [@dbdunagan](https://forum.pwncnc.com/u/dbdunagan)\ **Post date:** [May 23, 2025, 3:13pm UTC](https://forum.pwncnc.com/t/atc-dropping-tool-early/3123/1 "2025-05-23T15:13:54Z")
I’m sure this is something I’ve done wrong or not configured properly. The problem is when I run the t#m6 command the spindle rises to the specified height (5.0496), moves to the tool holder Y position (T1: 4.3140), lowers only a few mm and drops the tool (should lower to -0.3167). Any help would be greatly appreciated. ---
**Author:** ![Eriz](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.pwncnc.com/eriz/32/540_2.png) [@Eriz](https://forum.pwncnc.com/u/Eriz)\ **Post date:** [May 23, 2025, 5:20pm UTC](https://forum.pwncnc.com/t/atc-dropping-tool-early/3123/2 "2025-05-23T17:20:29Z")
What controller are you using, Masso? What are your settings? ---
**Author:** ![Chris](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.pwncnc.com/chris/32/54_2.png) [@Chris](https://forum.pwncnc.com/u/Chris)\ **Post date:** [May 23, 2025, 5:51pm UTC](https://forum.pwncnc.com/t/atc-dropping-tool-early/3123/3 "2025-05-23T17:51:00Z")
0 is the top, and -.3167 is just over a quarter inch from the top. Check your machine height again and put that value in > **[Pick and Place location - PwnCNC](https://support.pwncnc.com/kb/article/533-pick-and-place-location/)** ---
**Author:** ![Chris](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.pwncnc.com/chris/32/54_2.png) [@Chris](https://forum.pwncnc.com/u/Chris)\ **Post date:** [May 24, 2025, 4:51am UTC](https://forum.pwncnc.com/t/atc-dropping-tool-early/3123/4 "2025-05-24T04:51:37Z")
Here’s a video demonstration [](https://www.youtube.com/watch?v=OBGHgdktz-k) and the masso docs [Linear Tool Changer (Type 2)](https://docs.masso.com.au/wiring-and-setup/tool-changers/mill-tool-changers/linear-tool-changer-type-2) ---
**Author:** ![dbdunagan](https://avatars.discourse-cdn.com/v4/letter/d/49beb7/32.png) [@dbdunagan](https://forum.pwncnc.com/u/dbdunagan)\ **Post date:** [May 27, 2025, 12:41am UTC](https://forum.pwncnc.com/t/atc-dropping-tool-early/3123/5 "2025-05-27T00:41:07Z")
I am using the MASSO controller. I followed the instructions in the videos and am not sure what else I can do. Pick and Place Z Position is set to -0.31670 Z Clearance is set to 5.04900 (Is all the way up as far as the machine will go) X Position for all tools is 0.00000 Y Position for T1 is 4.31400 " T2 is 6.49610 " T3 is 8.67370 " T4 is 10.82990 Im not sure where to go from here. I think I might see where the problem is. When I Auto Tool Zero for T1 it shows -4.71063 in the Z Offset. The position for Z on the Jog screen says 0.3488 at the Tool Setter. ---
**Author:** ![Chris](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.pwncnc.com/chris/32/54_2.png) [@Chris](https://forum.pwncnc.com/u/Chris)\ **Post date:** [May 27, 2025, 2:11am UTC](https://forum.pwncnc.com/t/atc-dropping-tool-early/3123/7 "2025-05-27T02:11:04Z")
Computers are dumb and do what you tell it to. Your z position being -.3176 is wrong, and instead you need to do it according to the machine coordinates. > [@dbdunagan](#): > > I followed the instructions in the videos and am not sure what else I can do. Did you watch the video I filmed just for you for the situation in question above? > [@dbdunagan](#): > > When I Auto Tool Zero for T1 it shows -4.71063 in the Z Offset. Don’t confuse yourself with trying to correlate the tool setter and ATC settings. That offset is a machine offset from the arbitrary point that your tool setter registers at ---
**Author:** ![dbdunagan](https://avatars.discourse-cdn.com/v4/letter/d/49beb7/32.png) [@dbdunagan](https://forum.pwncnc.com/u/dbdunagan)\ **Post date:** [May 27, 2025, 12:33pm UTC](https://forum.pwncnc.com/t/atc-dropping-tool-early/3123/8 "2025-05-27T12:33:19Z")
Chris, I can’t begin to tell you how much I appreciate your help. I did not watch that video (ATC Programming) because when I saw the first (Pick and Place Location - PwnCNC I assumed this was one of the many I had already watched so I apologize for making that assumption. This morning I was able to try what you have in the video and while I have some finetuning to do it worked like a champ. Thank you so much for all your help with this issue. Last I have a network engineer for 30ish years and I have to make one small correction to something you said “Computers are dumb and do what you tell it to.” I say Computers do what the dummies tell them to do. Thank you again for all your help Sir. ---
**Author:** ![Chris](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.pwncnc.com/chris/32/54_2.png) [@Chris](https://forum.pwncnc.com/u/Chris)\ **Post date:** [May 27, 2025, 4:10pm UTC](https://forum.pwncnc.com/t/atc-dropping-tool-early/3123/9 "2025-05-27T16:10:44Z")
> [@dbdunagan](#): > > Computers do what the dummies tell them to do. Nice, i guess my phrase has to be upgraded with AI becoming more and more mainstream