In manufacturing, accuracy is everything. A product that is off by even a fraction of a millimeter can lead to wasted material, rejected batches, and costly downtime. For more than 25 years, K&M Engineering Solution have seen one truth stand out: a fixture is only as good as its repeatability. The ability of a fixture to hold a part in the exact same position, every single cycle, is what separates world-class production from ordinary output. And at the heart of this repeatability is not luck or trial and error — it is geometry.
What Repeatability Means to Us
When we talk about repeatability, we mean:
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The part is always held in the same position.
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No unnecessary adjustments are required.
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Every output matches the design, reducing rework and waste.
Without repeatability, production slows down, costs rise, and quality suffers. That’s why we focus on getting the geometry right.
The Geometry We Follow: The 3-2-1 Rule
Over the years, we’ve built thousands of fixtures using one simple, proven method: the 3-2-1 principle.
| Step | Geometry Applied | What It Controls | Simple Example |
|---|---|---|---|
| 3 points | Rest the part on three supports | Stops up-and-down movement | A plate resting firmly on three hardened blocks |
| 2 points | Add two side locators | Stops side-to-side sliding | A part guided against two pins so it doesn’t shift sideways |
| 1 point | Add one end locator | Stops forward-backward sliding | A bracket locked against a stopper pin |
By controlling all six possible movements, we ensure the part sits in the same place — cycle after cycle.
What Experience Has Taught Us
Over decades of work, we’ve found that small details make a big difference:
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Flatness of supports: If supports are uneven, the part will rock.
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Accuracy of pins: Loose pins cause play; tight pins make loading difficult.
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Clamping: The clamp must hold firm but not distort the part.
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Durability: Hardened surfaces keep the fixture repeatable for thousands of cycles.
Why We Believe Geometry is Everything
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Our fixtures ensure accuracy — every part matches the design.
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Our solutions save time — operators don’t need to re-adjust.
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Our methods improve efficiency — production flows smoothly.
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Our designs reduce waste — fewer rejects and reworks.
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Our experience builds trust — fixtures that last for years.
Closing Thought
After 25+ years in this industry, we know this for certain: geometry is the backbone of fixture repeatability. Strong clamps and heavy structures mean nothing if the geometry isn’t right. But when geometry is correct, the fixture becomes a reliable partner in production — delivering precision, efficiency, and repeatability, cycle after cycle.
