Custom T-Slot & V-Slot Aluminum Extrusions | Industrial Frame Profiles

We don’t ship random 6-meter bars. We ship a frame kit, machined to your BOM, ready to bolt together.

You’ve probably built with T-slot before. You know the frustration: a T-nut that jams halfway down the slot, a 2-meter bar with a visible bow, a frame that rocks on a flat floor because one extrusion twisted during cooling. These aren’t assembly errors. They’re profile errors that left the factory.

We extrude T-slot and V-slot aluminum profiles for industrial frames, automation guarding, workstations, linear rails, and custom machine builds. We’re not a catalog house. We work from your drawings—and we focus on the dimensional details that make the difference between a frame that squares up in ten minutes and one that fights you all afternoon.

The Problems Nobody Talks About (Until the Box Arrives)

Problem 1: Slot widths that wander

Some suppliers treat T-slot grooves like a rough feature. They’re not. If the slot opening varies by 0.3 mm across a batch, a standard T-nut slides freely in one bar and needs hammering in the next. The day gets eaten up sorting hardware, filing burrs, and swearing at a frame that should have been a quick assembly.

Our solution:
We hold the slot width to ±0.15 mm on common sizes (6 mm, 8 mm, 10 mm). The die tongues that form the slots are cut from H13 steel with proper heat treatment and triple tempering. We check every 50 bars with a go/no-go gauge during production. When the tongue starts to wear, we repair the die—before bad bars leave the line. The slot walls are clean, no burrs, so a T-nut slides without binding and locks without play.

Problem 2: Bars that aren’t straight and flat

Extruded aluminum comes out of the die hot, runs through quench, and can twist or bow as it cools. If the mill doesn’t stretch the material properly, residual stress stays locked in. Cut a 2-meter piece and it springs into a banana. Assemble a frame from that, and your diagonal measurements won’t match. Mount a linear rail on a bowed face, and the rail follows the curve.

Our solution:
Every T-slot and V-slot profile goes through a tension stretcher after extrusion—1–3% permanent elongation. This pulls out internal stress and gives us bars that stay straight. We guarantee straightness at 0.5 mm per meter or better. If you’re mounting a precision guide rail, we recommend CNC milling the mounting surface after extrusion. We can hold flatness under 0.05 mm across the machined face, so your rail sits dead level.

Problem 3: The “two-tone” frame

You order profiles twice—once for the base, once for the uprights. The first batch is silver-anodized and looks fine. The second batch arrives a month later, same spec, and under natural light it has a faint champagne shift. When the frame stands in a customer’s lobby, everyone notices.

Our solution:
We treat a frame order as one production batch. Same billet heat, same anodizing tank, same cycle. Silver anodizing is our default for industrial frames because it’s the most stable in color. If you need black, we run it in a dedicated black tank. Before packing, all bars for the same order get checked side-by-side under the same light. We keep a color reference sample, and if you reorder later, we match to it within ΔE 1.0.

What We Extrude

T-Slot profiles:
The workhorse. T-shaped grooves on one, two, three, or four faces. Designed for T-nuts that rotate 90° and clamp. The standard for machine frames, guarding, workstations, and modular structures.

V-Slot profiles:
V-shaped grooves with angled sidewalls (typically 45°). These work with V-wheel bearings for linear motion—no separate rail needed. Common in 3D printers, CNC routers, laser engravers, and camera sliders.

Custom mixed geometries:
A single profile can carry T-slots on three faces and a V-slot on the fourth. Good for a gantry beam that needs frame connections and a motion axis.

We extrude in 6063-T5 as standard, with 6061-T6 available for high-load applications. Standard cross-sections range from 20×20 mm up to 160×160 mm, with slot widths from 5 mm to 10 mm. Larger custom sections possible.

Cut, Drilled, Tapped, Labeled—Ready to Build

You send us a bill of materials. We do the rest:

• Precision sawing: Length tolerance ±0.1 mm, square cut, no burr.
• CNC drilling: Through holes, stepped holes, access holes—all per your drawing.
• Tapping: End-face tapping for hidden connectors, side tapping for brackets. M3 to M12, 6H class.
• End milling: Notches, steps, miter cuts, and flat mounting faces.

Every bar gets a label with its part number from your drawing. When the pallet arrives, your crew builds by the numbers. No saw. No drill. No guesswork.

Where These Profiles End Up

• Machine frames and guarding: 40×40, 40×80, 45×45 T-slot. Rigid, modular, easy to reconfigure when the line changes.
• 3D printers and CNC routers: 20×40, 40×40 V-slot for the gantry and linear axis. Clean rolling, no separate rail to mount.
• Workstations and assembly benches: 40×40 T-slot frames with accessories like tool rails and monitor mounts.
• Test and measurement fixtures: Tight-straightness profiles with machined mounting faces for cameras, sensors, and optical components.
• Enclosures and safety guarding: T-slot frames with infill panels. Clean, professional, compliant.

Tolerances That Matter

Questions We Get

Q1: Can you do both T-slot and V-slot on the same bar?
Yes. A custom die can put T-slots on the sides for frame connections and a V-slot on the top face for a rolling axis. This keeps your gantry beam count down and simplifies the assembly. Send us the cross-section idea and we’ll check extrudability.

Q2: How straight and flat are your profiles really?
Straightness is 0.5 mm/m or better out of the press, guaranteed. For flatness on a mounting surface—say, where a linear guide rail bolts on—the extruded surface alone may not be enough if you need micron-level precision. We recommend post-extrusion CNC milling on that face. After machining, we hold flatness within 0.05 mm.

Q3: Can you match the anodized color to my existing frame?
If the existing frame came from us, we have the color sample and can match it. If it came from another supplier, we’ll need a physical sample. We’ll do our best to get close, but be aware that different die designs and billet chemistries can make an exact match difficult. For critical visible parts, we recommend ordering the full frame from a single batch.

Q4: What’s the MOQ for custom T-slot profiles?
500 kg for a new die. If you’re using an existing cross-section we already have tooling for, we can run as little as 200 kg.

Q5: We only need one machine frame. Is that too small?
Not at all. We’ll take your frame drawing or BOM, cut and machine all the bars, label them, and ship the kit. One-off frames are a regular part of our workflow.

Q6: How do you handle T-slot frames for cleanroom or food-grade environments?
The anodized surface is naturally non-sparking and resists mild chemicals. For washdown areas, we recommend black anodizing or a food-grade powder coat. The key is to avoid exposed uncoated aluminum, which can oxidize and powder over time. We’ll recommend the right finish based on your cleaning protocol and chemical exposure.