Blog
Tips, guides & industry news from the Pro-Graad team.
Aluminum Finishing: Loading & Smearing Fixes
Aluminum isn't soft steel — it melts at half the temperature and sticks to your disc in seconds. The mechanism, the fixes, and why anodize...
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Common Deburring & Finishing Problems (and How to Fix Them)
Eleven finishing failures, the mechanism behind each, and the fixes in order. Most trace back to one variable, and it isn't the disc you're holding.
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Removing Rust from Metal: Which Abrasive for Light, Medium, or Heavy Rust
Rust hides in pits your disc can't reach — which is why it blooms back through the primer. Five severity levels, how to diagnose each,...
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The Real Cost of Abrasives: Cost-Per-Part vs. Sticker Price
Sticker price is one input to the smallest term in the equation. The real cost-per-part math, worked all the way through, plus a calculator for...
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Weld Cleaning & Prep: Removing Discoloration and Heat Tint
That rainbow isn't a stain — it's chromium that left your steel. What heat tint actually is, why polishing it off can hide the problem,...
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What Surface Finish (Ra) Do You Actually Need? A Practical Guide
Three surfaces can share one Ra value and fail three different ways. What Ra really measures, what it misses, and how to stop paying for...
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What Is a Convolute Deburring Wheel? How They're Built & How to Spec One
Convolute means wound. A coil of abrasive nylon web around a core — how it's built, why it won't gouge your part, and how to...
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Deburring Stainless Steel: Best Methods & Wheels for a Burr-Free Edge
Stainless folds burrs instead of shedding them. Why it work-hardens, which method fits your work, and how to spec a convolute wheel for a burr-free...
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Non-Woven Abrasive Grades Explained (Coarse to Ultra Fine)
What Coarse, Medium, Very Fine, Super Fine, and Ultra Fine actually mean — plus grit equivalents, density, and mineral. The full non-woven grade reference.
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