# Extrusion ## MAXTube Extrusion [MAXTube](https://www.revrobotics.com/MAXTube/) is compatible with the REV ION System and is a strong extruded aluminum tubing (Aluminum 6061) that features positional hole patterns that make robot structures easier to build. MAXTube comes in [multiple extrusion profiles and wall thicknesses](#maxtube-available-sizes). #### MAXTube with Nut Groove: On the 1in sides of these MAXTube extrusions, there is a nut groove inside to fit #10 nuts, making assembly easier by helping to retain nuts where a wrench can't reach. ![](/files/a1AqkvBWuJw4WiZTGrHi) {% hint style="success" %} Use Standard 2x1 Tube for a more secure bearing fit and 2x1 Light Tube where weight is a critical factor {% endhint %} ## MAXTube Hole Patterns ### MAX Pattern Some MAXTube features the MAX Pattern, combination of #10 holes in a 1/2in pitch grid and the MAXSpline bore every 2in. This repeats down the length of channel to mount bearings, MAX Hubs, shafts, brackets, and more.
### Grid Pattern 2x1in MAXTube that features Grid Pattern has three rows of #10 holes on a 1/2in pitch. The Grid Pattern is ideal for rapidly prototyping structures with our 1in brackets.
### MAXTube Available Sizes | | | | | | ------------------- | -------------------- | ---------------------------- | -------------- | | **Size** | **Pattern** | **Position/Length** | **Nut Groove** | | 1/2x1/2in | Grid | 47in | No | | 1x1in | Grid | 47in | Yes | | 1x1in - 1/16in Wall | Grid | 47in | No | | 1x1in - 1/8in Wall | Grid | 47in | No | | 2x1in Light | No Pattern | 47in | Yes | | 2x1in Light | Grid | 47in | Yes | | 2x1in | No Pattern | 47in | Yes | | 2x1in | Grid | 47in | Yes | | 2x1in | MAX Pattern | 1-Pos (3in) to 23-Pos (47in) | Yes | | 2x1in - 1/16in Wall | Grid | 47in | No | | 2x1in - 1/8in Wall | Grid | 47in | No | | 2x1in - 3/16in Wall | Grid | 47in | No | | 2x1in - 1/8in Wall | MAX Pattern | 1-Pos (3in) to 23-Pos (47in) | No | | 2x2in | Grid | 47in | No | | 2x2in | MAX Pattern | 47in | No | | 2x2in | MAX and Grid Pattern | 47in | No |
## 1in Extrusion
The [1in Extrusion (REV-21-1000)](https://www.revrobotics.com/1in-extrusion/) has slots on on all four sides that accept standard #10 Hardware, including low-profile nylock nuts. Rather than using a T-nut, which is more expensive, slide a #10 hex head screw along the slot and adjust brackets and other build materials as needed. All holes in the 1in Extrusion can be tapped with a 10-32 tap, consistent with the REV ION Standards. The corners can also accept 1/16in thick flat stock. The flexibility of T-Slot Extrusion makes using it a great option for builds that won’t fit on the pattern of your patterned extrusion. Teams are not locked into a pitch, so there are virtually infinite options for mounting other components. T-Slot Extrusion is also a great option for adding linear motion to your robot. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.revrobotics.com/ion-build/structure/extrusion.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.