Uploaded April 2026 | Updated September 2026, 2 weeks ago

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In this step you're installing your Tool Length Sensor (TLS) - standard with each kit - and optional tool racks.

The AltMill - any size - can hold up to two racks, 12 tools total. If installing two racks, some extra steps are required.

Chapters
00:00 Installing One Rack
09:32 Installing a Second Rack
12:45 Tool Length Sensor Install

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Next Step: Dust Shoe
youtu.be/1Tg-IhbPyow

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Extra Help

Tool Rack & TLS:
resources.sienci.com/view/atc-tool-rack-and-tls

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Learn more
Videos act as overviews for the assembly process, and were built to supplement online instructions. Be sure to watch this video AND read any appropriate online instructions. A parts list for your ATC will be online too.

ATC Overview & Specs: bit.ly/4bQpCL7
ATC Unboxing: bit.ly/3QIgdNc
FREE CNC Interface Software: bit.ly/4v010qH
ATC Product Page: bit.ly/4ebyKvp

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