# TAZ 6 switching back to original tool head **URL:** \ **Category:** LulzBot TAZ\ **Created:** [May 28, 2017, 8:00pm UTC](https://forum.lulzbot.com/t/taz-6-switching-back-to-original-tool-head/4925 "2017-05-28T20:00:56Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![svanwhy](https://avatars.discourse-cdn.com/v4/letter/s/c68b51/32.png) [@svanwhy](https://forum.lulzbot.com/u/svanwhy)\ **Post date:** [May 28, 2017, 8:00pm UTC](https://forum.lulzbot.com/t/taz-6-switching-back-to-original-tool-head/4925/1 "2017-05-28T20:00:56Z")
Hello I’ve been using my new MOAR struder and loving it! [http://youtu.be/LtyUjPfm9-A](http://youtu.be/LtyUjPfm9-A) Now I need to print some ABS and I have switched back to the original tool head. I re-flashed the firmware for the original tool head, is there anything else I need to do? When I switched to the MOAR struder I had to manually change the E-steps, do I need to reverse the process somehow? I do not see a sticker on the back of the original tool head with E-steps like there is on the MOAR Struder. Thank You V/r ---
**Author:** ![kmanley57](https://avatars.discourse-cdn.com/v4/letter/k/13edae/32.png) [@kmanley57](https://forum.lulzbot.com/u/kmanley57)\ **Post date:** [May 28, 2017, 10:54pm UTC](https://forum.lulzbot.com/t/taz-6-switching-back-to-original-tool-head/4925/2 "2017-05-28T22:54:26Z")
> [@svanwhy](#): > > When I switched to the MOAR struder I had to manually change the E-steps, do I need to reverse the process somehow? I do not see a sticker on the back of the original tool head with E-steps like there is on the MOAR Struder. If you did not record the E-steps for the extruder that was on the printer when it was shipped. Then you will need to perform the calibration to find the E-steps setting you have lost. It is always a good idea to place a sticker on your extruders so you have their E-Steps on each of them. > **[OHAI: Open Hardware Assembly Instructions](https://ohai.lulzbot.com/project/fine-tune-mini-extruder/calibration/)** > > Open Hardware Assembly ---
**Author:** ![GJG](https://avatars.discourse-cdn.com/v4/letter/g/a587f6/32.png) [@GJG](https://forum.lulzbot.com/u/GJG)\ **Post date:** [May 29, 2017, 4:57pm UTC](https://forum.lulzbot.com/t/taz-6-switching-back-to-original-tool-head/4925/3 "2017-05-29T16:57:57Z")
If you have the original documentation that was shipped with the printer. E-Steps for the original extruder will be shown there. ---
**Author:** ![david](https://avatars.discourse-cdn.com/v4/letter/d/aeb1de/32.png) [@david](https://forum.lulzbot.com/u/david)\ **Post date:** [May 29, 2017, 6:03pm UTC](https://forum.lulzbot.com/t/taz-6-switching-back-to-original-tool-head/4925/4 "2017-05-29T18:03:05Z")
Hello, If you would like to give your serial number to [support@lulzbot.com](mailto:support@lulzbot.com), we can tell you what your Esteps were that came with the printer. I hope that may help. ---
**Author:** ![svanwhy](https://avatars.discourse-cdn.com/v4/letter/s/c68b51/32.png) [@svanwhy](https://forum.lulzbot.com/u/svanwhy)\ **Post date:** [May 30, 2017, 1:52pm UTC](https://forum.lulzbot.com/t/taz-6-switching-back-to-original-tool-head/4925/5 "2017-05-30T13:52:23Z")
Thank you everyone for the help! I conducted the extruder calibration and set it accordingly. I also found the documentation that GJG spoke of and it is called the “evaluation and test document” I am now making a binder to get all of my stuff together and I have put a little sticker on my tool head with the E-STEPS on it. I guess I do not understand how E-STEPS work, before calibration my E-STEPS were 816 and it was over extruding. After calibration the result was 830. I would think that you would reduce the number of E-STEPS for over extrusion. I’m just trying to wrap my head around the concept. My next project is to make a tool head holder with a label showing the E-STEPS. Thank You!