# Onefinity Easy ATC (Automatic Tool Changer) **URL:** https://forum.onefinitycnc.com/c/onefinity-easy-atc-automatic-tool-changer/170.md?page=2 [Latest](https://forum.onefinitycnc.com/latest.md) · [Categories](https://forum.onefinitycnc.com/categories.md) **Page:** 3 --- ## [Error - Sub programe file not found (solved, tool number mattered)](https://forum.onefinitycnc.com/t/error-sub-programe-file-not-found-solved-tool-number-mattered/34450)
**Author:** [@Wendelc](https://forum.onefinitycnc.com/u/Wendelc)\ **Replies:** 12\ **Last updated:** [September 24, 2025, 4:36pm UTC](https://forum.onefinitycnc.com/t/error-sub-programe-file-not-found-solved-tool-number-mattered/34450 "2025-09-24T16:36:26Z")
At my wits end with ATC here. After following the long installation process to the letter. I am struggling to wrap my head around the operation and there seems to be no videos on this specifically. I can run the tool c… --- ## [ERROR \*\* Sub program file not found \*\*](https://forum.onefinitycnc.com/t/error-sub-program-file-not-found/34250)
**Author:** [@jmheist](https://forum.onefinitycnc.com/u/jmheist)\ **Replies:** 12\ **Last updated:** [September 23, 2025, 2:21am UTC](https://forum.onefinitycnc.com/t/error-sub-program-file-not-found/34250 "2025-09-23T02:21:05Z")
Elite Foreman w/ ATC: I’ve got the ATC installed, and the programs to test tool changes all work well. In VCarve Pro, machine: Elite (Masso) Foreman default Post processor: Onefinity Masso RapidChange ATC Arc (inches) … --- ## [Changing the tool number masso thinks it has (atc)](https://forum.onefinitycnc.com/t/changing-the-tool-number-masso-thinks-it-has-atc/35231)
**Author:** [@HardtailSr](https://forum.onefinitycnc.com/u/HardtailSr)\ **Replies:** 14\ **Last updated:** [September 20, 2025, 8:24pm UTC](https://forum.onefinitycnc.com/t/changing-the-tool-number-masso-thinks-it-has-atc/35231 "2025-09-20T20:24:56Z")
ok did all the things on The ATC video on installing the Easy ATC video by Mitch. But, my Masso thinks tool 18 is in the spindle when it is actually tool 1. how do i change this? --- ## [Why won't it change the tool?](https://forum.onefinitycnc.com/t/why-wont-it-change-the-tool/35350)
**Author:** [@HardtailSr](https://forum.onefinitycnc.com/u/HardtailSr)\ **Replies:** 3\ **Last updated:** [September 17, 2025, 10:09pm UTC](https://forum.onefinitycnc.com/t/why-wont-it-change-the-tool/35350 "2025-09-17T22:09:26Z")
I ran a simple vcarve program it ended and i loaded the next program which was a profile to cut out the word I had just carved previously. I rewound the profile cut and hit cycle start. The machine went to the tool sett… --- ## [RapidChange ATC Improved Pocket Tool](https://forum.onefinitycnc.com/t/rapidchange-atc-improved-pocket-tool/35405)
**Author:** [@vegework](https://forum.onefinitycnc.com/u/vegework)\ **Replies:** 6\ **Last updated:** [September 17, 2025, 4:53pm UTC](https://forum.onefinitycnc.com/t/rapidchange-atc-improved-pocket-tool/35405 "2025-09-17T16:53:46Z")
The Problem I found the pocket tool included with the ATC to be a bit “fiddly” to use. One has to precisely align the tool with the notches in the pocket in order to adjust. I have 60 year old eyes and trying to see a … --- ## [Wire masso for ATC and Redline spindle (CCW)](https://forum.onefinitycnc.com/t/wire-masso-for-atc-and-redline-spindle-ccw/35416)
**Author:** [@mybludrunsorange](https://forum.onefinitycnc.com/u/mybludrunsorange)\ **Replies:** 1\ **Last updated:** [September 15, 2025, 9:13pm UTC](https://forum.onefinitycnc.com/t/wire-masso-for-atc-and-redline-spindle-ccw/35416 "2025-09-15T21:13:49Z")
I’ve found a few documents referencing a taped white wire but mine appears to only have a taped blue one. Can anyone confirm that this is indeed the correct wire? --- ## [QCW atc shows up, three screws immediately stripped](https://forum.onefinitycnc.com/t/qcw-atc-shows-up-three-screws-immediately-stripped/35276)
**Author:** [@mkyb14](https://forum.onefinitycnc.com/u/mkyb14)\ **Replies:** 4\ **Last updated:** [September 13, 2025, 11:35pm UTC](https://forum.onefinitycnc.com/t/qcw-atc-shows-up-three-screws-immediately-stripped/35276 "2025-09-13T23:35:35Z")
Didn’t even torque these down tight. The material they’re made out of seems to be very soft. Can’t back them out and now I’m sitting here trying to use a speed out bit. Very soft metal screw. Need to get these out and f… --- ## [Pocket Position Z Error](https://forum.onefinitycnc.com/t/pocket-position-z-error/35387)
**Author:** [@Redti2go](https://forum.onefinitycnc.com/u/Redti2go)\ **Replies:** 2\ **Last updated:** [September 12, 2025, 1:22pm UTC](https://forum.onefinitycnc.com/t/pocket-position-z-error/35387 "2025-09-12T13:22:02Z")
I continually get an error message {Pocket Position Z Position} Must be at least 1.083in below Z clearance 0.000in. ATC is mounted on Journeyman QCW front. I ran the “Find Z Position” file and documented the Z as 6.1560… --- ## [Monitor shuts down when plugging in ATC](https://forum.onefinitycnc.com/t/monitor-shuts-down-when-plugging-in-atc/35288)
**Author:** [@shaun](https://forum.onefinitycnc.com/u/shaun)\ **Replies:** 1\ **Last updated:** [September 2, 2025, 9:28pm UTC](https://forum.onefinitycnc.com/t/monitor-shuts-down-when-plugging-in-atc/35288 "2025-09-02T21:28:20Z")
Hello all. Having a problem with my machine. Got the ATC set up but any time I plug in the ATC the screen shuts off. Unplug the ATC then screen comes back on. Plug it back in and it goes back off. I checked wiring again… --- ## [Step files or .stl of Easy ATC](https://forum.onefinitycnc.com/t/step-files-or-stl-of-easy-atc/34788)
**Author:** [@Tadpole](https://forum.onefinitycnc.com/u/Tadpole)\ **Replies:** 2\ **Last updated:** [August 18, 2025, 2:35am UTC](https://forum.onefinitycnc.com/t/step-files-or-stl-of-easy-atc/34788 "2025-08-18T02:35:50Z")
I saw this was asked in a similar post from a while ago: RapidChange ATC technical plans/cad files available? - #4 by TMToronto EDIT: I posted the wrong link however I just managed to destroy the top part of my slot 1 … --- ## [ATC - smashed it!](https://forum.onefinitycnc.com/t/atc-smashed-it/34950)
**Author:** [@Apacher\_sim](https://forum.onefinitycnc.com/u/Apacher_sim)\ **Replies:** 20\ **Last updated:** [August 16, 2025, 8:12am UTC](https://forum.onefinitycnc.com/t/atc-smashed-it/34950 "2025-08-16T08:12:01Z")
Having waited since November 2024 for the ATC to arrive, which it did last month (July 25). I have now spent two days fitting it and running with the 3rd party WebUI. Thanks to Mitz for the video which I have followed to… --- ## [FYI if buying a second ATC](https://forum.onefinitycnc.com/t/fyi-if-buying-a-second-atc/35069)
**Author:** [@Papester](https://forum.onefinitycnc.com/u/Papester)\ **Replies:** 0\ **Last updated:** [August 16, 2025, 12:29am UTC](https://forum.onefinitycnc.com/t/fyi-if-buying-a-second-atc/35069 "2025-08-16T00:29:29Z")
Just an FYI for anyone looking to pickup a second ATC to expand from four tools to eight or more. There are two different versions of the ATC that were delivered and they are not compatible with each other. As you can se… --- ## [Rapidchange ATC Locator Disk STL (FAQ)](https://forum.onefinitycnc.com/t/rapidchange-atc-locator-disk-stl-faq/35065)
**Author:** [@OnefinityCNC](https://forum.onefinitycnc.com/u/OnefinityCNC)\ **Replies:** 0\ **Last updated:** [August 15, 2025, 10:57pm UTC](https://forum.onefinitycnc.com/t/rapidchange-atc-locator-disk-stl-faq/35065 "2025-08-15T22:57:49Z")
Rapidchange ATC Locator Disk .STL Locator Disc.stl (188.3 KB) --- ## [Is there a manual for the rapid change atc yet?](https://forum.onefinitycnc.com/t/is-there-a-manual-for-the-rapid-change-atc-yet/31053)
**Author:** [@HardtailSr](https://forum.onefinitycnc.com/u/HardtailSr)\ **Replies:** 3\ **Last updated:** [August 8, 2025, 3:08pm UTC](https://forum.onefinitycnc.com/t/is-there-a-manual-for-the-rapid-change-atc-yet/31053 "2025-08-08T15:08:47Z")
can’t seem to find any manuals here regarding the new ATC on the onefinity machine. I would like some info on how to set it up, placement of it on the bed, and how to keep the spindle from crashing into it. Is there some… --- ## [ATC might not be for me](https://forum.onefinitycnc.com/t/atc-might-not-be-for-me/34257)
**Author:** [@CMcDaniel](https://forum.onefinitycnc.com/u/CMcDaniel)\ **Replies:** 9\ **Last updated:** [August 1, 2025, 9:12pm UTC](https://forum.onefinitycnc.com/t/atc-might-not-be-for-me/34257 "2025-08-01T21:12:33Z")
I’ve had my ATC for a month or so and, after a few hiccups in getting it configured, it has operated exactly as intended. It’s a neat solution to the tool changer problem and is well designed. I just don’t think it’s … --- ## [Help Needed: Tool to unload is not set to any slot](https://forum.onefinitycnc.com/t/help-needed-tool-to-unload-is-not-set-to-any-slot/34759)
**Author:** [@MarkD](https://forum.onefinitycnc.com/u/MarkD)\ **Replies:** 6\ **Last updated:** [August 1, 2025, 10:34am UTC](https://forum.onefinitycnc.com/t/help-needed-tool-to-unload-is-not-set-to-any-slot/34759 "2025-08-01T10:34:54Z")
Hi all, Today I installed my RapidChange Easy ATC, and although the installation went smoother than I anticipated, I’ve hit a snag that I’m hoping someone here can help me navigate. Here’s the situation: Before the ATC… --- ## [Proper setup for ATC toolpaths starting with manual tool?](https://forum.onefinitycnc.com/t/proper-setup-for-atc-toolpaths-starting-with-manual-tool/34708)
**Author:** [@drkdve](https://forum.onefinitycnc.com/u/drkdve)\ **Replies:** 9\ **Last updated:** [July 29, 2025, 4:28pm UTC](https://forum.onefinitycnc.com/t/proper-setup-for-atc-toolpaths-starting-with-manual-tool/34708 "2025-07-29T16:28:02Z")
I have a file I would like to run which includes all 4 tools in the changer, and starts with a manual tool 5. I load the manual tool and home everything, it measures the tool. Then I run the “Synch Pocket Manual” subro… --- ## [How close to center/ located do the ATC pockets really need to be?](https://forum.onefinitycnc.com/t/how-close-to-center-located-do-the-atc-pockets-really-need-to-be/34724)
**Author:** [@HardtailSr](https://forum.onefinitycnc.com/u/HardtailSr)\ **Replies:** 1\ **Last updated:** [July 28, 2025, 11:02pm UTC](https://forum.onefinitycnc.com/t/how-close-to-center-located-do-the-atc-pockets-really-need-to-be/34724 "2025-07-28T23:02:52Z")
i am trying to get them very very close but? how close is close enough? --- ## [ATC and Dry Run Mode?](https://forum.onefinitycnc.com/t/atc-and-dry-run-mode/34573)
**Author:** [@bhorling](https://forum.onefinitycnc.com/u/bhorling)\ **Replies:** 2\ **Last updated:** [July 22, 2025, 10:46pm UTC](https://forum.onefinitycnc.com/t/atc-and-dry-run-mode/34573 "2025-07-22T22:46:05Z")
When I have Dry Run Mode enabled and try to execute a job with the Easy ATC, I get an error “ATC IR beam obstructed. Clear and re-attempt on cycle start.”, which appears to be from the RC’s 601.nc. If I disable Dry Run … --- ## [ATC Magazine Activiation](https://forum.onefinitycnc.com/t/atc-magazine-activiation/34548)
**Author:** [@Plunk](https://forum.onefinitycnc.com/u/Plunk)\ **Replies:** 2\ **Last updated:** [July 19, 2025, 4:35am UTC](https://forum.onefinitycnc.com/t/atc-magazine-activiation/34548 "2025-07-19T04:35:14Z")
I am installing my ATC and there was supposed to be an activation code in the box (which I could not locate). Onefinity pointed me to RapidChange, they said they needed a picture in order to tell me which of the two code… --- ## [Help locating er 20 collet block](https://forum.onefinitycnc.com/t/help-locating-er-20-collet-block/34516)
**Author:** [@HardtailSr](https://forum.onefinitycnc.com/u/HardtailSr)\ **Replies:** 5\ **Last updated:** [July 17, 2025, 12:35pm UTC](https://forum.onefinitycnc.com/t/help-locating-er-20-collet-block/34516 "2025-07-17T12:35:22Z")
I have gone through every amazon page, and cannot find er 20 collet blocks. Neither square nor hexagonal. They have them in many other ER sizes like 32 ,40,5c and so on. but the only collet holders for ER@) are round sha… --- ## [Spitball Engineering for the ATC](https://forum.onefinitycnc.com/t/spitball-engineering-for-the-atc/34358)
**Author:** [@Ken5](https://forum.onefinitycnc.com/u/Ken5)\ **Replies:** 3\ **Last updated:** [July 14, 2025, 10:50pm UTC](https://forum.onefinitycnc.com/t/spitball-engineering-for-the-atc/34358 "2025-07-14T22:50:15Z")
I bought my ATC a few months ago and I’ve not set it up yet for 2 reasons My designs to date don’t warrant multiple toolchanges and are for the most part right now one off productions. If I get to the stage of running … --- ## [Onefinity ATC / Connecting multiple ATCs together (FAQ)](https://forum.onefinitycnc.com/t/onefinity-atc-connecting-multiple-atcs-together-faq/33070)
**Author:** [@OnefinityCNC](https://forum.onefinitycnc.com/u/OnefinityCNC)\ **Replies:** 0\ **Last updated:** [May 9, 2025, 5:50pm UTC](https://forum.onefinitycnc.com/t/onefinity-atc-connecting-multiple-atcs-together-faq/33070 "2025-05-09T17:50:01Z")
The Onefinity RapidChange ATC (Automatic tool changer) is designed to link together to expand from 4 pockets to 8 or 16 (depending on space availability per machine). When connecting multiple together, neither the qcw m… --- ## [Where is the ATC setup file that has the tool setter location?](https://forum.onefinitycnc.com/t/where-is-the-atc-setup-file-that-has-the-tool-setter-location/34363)
**Author:** [@HardtailSr](https://forum.onefinitycnc.com/u/HardtailSr)\ **Replies:** 2\ **Last updated:** [July 7, 2025, 7:53pm UTC](https://forum.onefinitycnc.com/t/where-is-the-atc-setup-file-that-has-the-tool-setter-location/34363 "2025-07-07T19:53:04Z")
I have the file “setup”, but it only has 4 pockets no location for the tool setter, so once I installed the rapid change I simply used my trusty handheld Masso controller and centered that pin they give you right above t… --- ## [I just ran the ATC install program : failure (solved, user error)](https://forum.onefinitycnc.com/t/i-just-ran-the-atc-install-program-failure-solved-user-error/34354)
**Author:** [@HardtailSr](https://forum.onefinitycnc.com/u/HardtailSr)\ **Replies:** 3\ **Last updated:** [July 7, 2025, 5:19pm UTC](https://forum.onefinitycnc.com/t/i-just-ran-the-atc-install-program-failure-solved-user-error/34354 "2025-07-07T17:19:51Z")
I ran the program using the gcode from the resources tab on onefinity. it did what it does and then i tried to install my ATC with the pins provided and guess what, the first pin fit right and tight, the second one towar… --- ## [Installing the ATC. Looking for tips](https://forum.onefinitycnc.com/t/installing-the-atc-looking-for-tips/34229)
**Author:** [@HardtailSr](https://forum.onefinitycnc.com/u/HardtailSr)\ **Replies:** 4\ **Last updated:** [July 1, 2025, 6:56pm UTC](https://forum.onefinitycnc.com/t/installing-the-atc-looking-for-tips/34229 "2025-07-01T18:56:26Z")
been while since I actually did something with the software. I know that you can drag the ATC download anywhere but how do I get it to some place in relation to the actual size of the material IE the spoil board. I have … --- ## [Is your spindle not spinning CCW when commanded to?](https://forum.onefinitycnc.com/t/is-your-spindle-not-spinning-ccw-when-commanded-to/33497)
**Author:** [@3D-CNC](https://forum.onefinitycnc.com/u/3D-CNC)\ **Replies:** 2\ **Last updated:** [June 24, 2025, 12:24am UTC](https://forum.onefinitycnc.com/t/is-your-spindle-not-spinning-ccw-when-commanded-to/33497 "2025-06-24T00:24:07Z")
If you are adding your ATC to your system, you will get wiring with it. The white wire in this bunch is not used. Instead you need to use the white wire that was previously installed from the factory. It is tucked in som… --- ## [Changing between ATC and Manual tool changers](https://forum.onefinitycnc.com/t/changing-between-atc-and-manual-tool-changers/34099)
**Author:** [@GBD](https://forum.onefinitycnc.com/u/GBD)\ **Replies:** 4\ **Last updated:** [June 23, 2025, 8:59pm UTC](https://forum.onefinitycnc.com/t/changing-between-atc-and-manual-tool-changers/34099 "2025-06-23T20:59:32Z")
I don’t have my ATC yet but I’m wondering if anyone knows if you can swap between ATC (Either Linear Type 2 or Rapidchange) and Manual tool changers without having to setup the tool changer again once you switch back? --- ## [Setting up tool cup questions for ATC](https://forum.onefinitycnc.com/t/setting-up-tool-cup-questions-for-atc/33986)
**Author:** [@parapants](https://forum.onefinitycnc.com/u/parapants)\ **Replies:** 4\ **Last updated:** [June 19, 2025, 9:42am UTC](https://forum.onefinitycnc.com/t/setting-up-tool-cup-questions-for-atc/33986 "2025-06-19T09:42:35Z")
Hello, I am setting up the tool cups, and I’m having a few issues. Your help is appreciated. I’m installing a 1/4 inch endmill using a 1/8 O-ring. The collet is clicked into the collet nut. I’ve put the O-ring jus… --- ## [Enabling auto tool zero for ATC?](https://forum.onefinitycnc.com/t/enabling-auto-tool-zero-for-atc/33966)
**Author:** [@parapants](https://forum.onefinitycnc.com/u/parapants)\ **Replies:** 8\ **Last updated:** [June 17, 2025, 7:15pm UTC](https://forum.onefinitycnc.com/t/enabling-auto-tool-zero-for-atc/33966 "2025-06-17T19:15:17Z")
Hello, I have my MASSO wired up, and the ATC is fixed to my spoil board. I have only roughly setup the X/Y for pocket 1, and because my z-axis unexpectedly crashed into pocket 1, I’m now reading ahead. I am following … [Previous page](https://forum.onefinitycnc.com/c/onefinity-easy-atc-automatic-tool-changer/170.md?page=1) [Next page](https://forum.onefinitycnc.com/c/onefinity-easy-atc-automatic-tool-changer/170.md?page=3)