AKNgoes 18″ Carpenter Triangle Review: Oversized Precision for Woodworking Projects
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When it comes to layout tools, size and accuracy matter—especially for big projects like framing, stair stringers, or wide board cuts. Recently, I got my hands on the AKNgoes 18 inch carpenter triangle, and I’ve been using it across several jobs. Spoiler: it’s a beast in all the right ways.
Whether you’re a seasoned framer, a home builder, or just a DIYer tired of undersized tools, this one might earn a permanent spot on your workbench.
Why Size Matters: Go Big or Go Home
Standard speed squares are great—until you’re laying out a rafter or stair stringer and you realize your triangle just isn’t long enough to stay flush or hit your marks accurately.
That’s where this AKNgoes 18” square comes in. It’s literally twice the size of a standard triangle, and that extra real estate makes a real difference in layout accuracy, especially with wider lumber or structural cuts.
Key Features of the AKNgoes 18” Triangle
✅ Precision-Machined Aluminum Alloy Build
This isn’t your average hardware store triangle. The AKNgoes is made from CNC-machined aluminum alloy, which gives it serious weight and durability. It doesn’t flex, warp, or slide around when you need consistency.
📏 Standard and Metric Markings
One side is laid out in standard inches (up to 18”), and the other in millimeters (up to 460mm). Whether you work in imperial or metric—or bounce between both—this triangle’s got you covered.
🦶 Removable Foot for Flexibility
One of the standout features is the removable foot, which attaches with three screws. When attached, it lets you butt up against edges for perfect 90° and 45° layouts. When removed, it becomes flush—perfect for using on tables, miter saws, or tight spaces.
🔧 Great for Miter Gauges and Saw Calibration
Beyond layout, I’ve used it to double-check miter gauges on my table saw. It’s flat, rigid, and big enough to act as a calibration tool if you need something dead square.
Real-World Use: What I Like Most
- Framing: Laying it on subfloor or framing lumber makes squaring up fast and easy
- Stairs & Rafters: Excellent for laying out longer angles and marking cuts without repositioning
- Tool Setup: Works as a square reference for saw setups or tool calibration
- Teaching Tool: Great for showing others how to get true angles and understand layout
And the build quality? Solid. It feels hand-inspected and dead true out of the box. I’ve banged it around and it hasn’t flinched.
Why You Might Want Two
The size and quality alone justify the price, but there’s another angle here—this is a great tool to have one on-site and one in the shop, or even to pass on to a younger builder learning the ropes.
With tools like this, I often get asked: “Is it worth it over a basic speed square?” My answer: If you’re working on full-size structures or want true accuracy without workarounds—yes. Every time.
Where to Buy (Affiliate Link)
If you want to check one out for yourself, here’s my affiliate link:
👉 18″ Triangle on Amazon
This is an Amazon affiliate link, which means I may earn a small commission if you make a purchase—at no additional cost to you. It helps support the blog, the channel, and keeps honest reviews like this coming. Appreciate your support!
Final Verdict
The AKNgoes 18 inch carpenter triangle isn’t for every project—but when you need it, nothing else compares. It’s oversized, accurate, and built to last. If you’re looking to upgrade your layout game, this is a tool worth adding to your arsenal.
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