# AltMill MK2 2x4 3d STEP Model

**URL:** <https://forum.sienci.com/t/altmill-mk2-2x4-3d-step-model/26995>\
**Category:** 📄 General\
**Created:** [August 27, 2026, 4:02pm UTC](https://forum.sienci.com/t/altmill-mk2-2x4-3d-step-model/26995 "2026-08-27T16:02:45Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![dmsheffield](https://forum.sienci.com/letter_avatar_proxy/v4/letter/d/6f9a4e/32.png) [@dmsheffield](https://forum.sienci.com/u/dmsheffield)\
**Post date:** [August 27, 2026, 4:02pm UTC](https://forum.sienci.com/t/altmill-mk2-2x4-3d-step-model/26995/1 "2026-08-27T16:02:45Z")

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Does anyone know if there is a step model for the AltMill MK2 2x4.

I found the open source model for the 4x4, but would like details on the 2x4 to be able to place/mount a custom spoilboard.

I’d also be interested if there is a model that has the ATC tool holders mounted. I know the 2x4 positions them different than the 4x4.

Thank you.

Dave

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**Author:** ![\_Michael](https://forum.sienci.com/user_avatar/forum.sienci.com/_michael/32/2962_2.png) [@\_Michael](https://forum.sienci.com/u/_Michael)\
**Post date:** [August 27, 2026, 9:41pm UTC](https://forum.sienci.com/t/altmill-mk2-2x4-3d-step-model/26995/2 "2026-08-27T21:41:00Z")

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The 2x4 AltMill is part of the 4x4 onshape document. Select 2x4 in the tab bar at the bottom of the page.

I’m not aware of a model with the tool changer though.

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**Author:** ![dmsheffield](https://forum.sienci.com/letter_avatar_proxy/v4/letter/d/6f9a4e/32.png) [@dmsheffield](https://forum.sienci.com/u/dmsheffield)\
**Post date:** [August 27, 2026, 10:21pm UTC](https://forum.sienci.com/t/altmill-mk2-2x4-3d-step-model/26995/3 "2026-08-27T22:21:29Z")

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Missed that tab.

Thank you for the tip.

If anyone knows of any tool holder models, please let me know.