Blog
Tips, guides & industry news from the Pro-Graad team.
Pro-Graad FlowFixer FFA1 & FFA2
Run both Ridgid and General drain tooling off one machine. FFA1 adapts Ridgid R-connector ends to General slotted bits; FFA2 reverses it. Steel, snap-on, fits...
Read article
Abrasive RPM and SFPM: Maximum Safe Speed by Disc Diameter
Surface speed tears abrasives apart, not RPM. Verified ceilings by diameter, an SFPM calculator, and the die grinder mistake that puts people in the ER.
Read article
Quick-Change Disc Systems, Decoded
Abrasive Systems // Quick-Change Discs Quick-Change Disc Systems, Decoded You bought the discs. They won't lock onto your holder. Here's the reason, how to...
Read article
How to Pick the Right Abrasive Belt for Metal, Wood, and Composites
Master abrasive belt selection with our guide covering grain type, grit size, and backing for metal, wood, and composites. Avoid costly mistakes.
Read article
Buffing on an Angle Grinder: Flanges, Extensions and Setup
A 6-inch buff on a full-speed grinder turns at 2.4 times bench buffer surface speed. Cloth wheels are not built for that, and most people...
Read article
Passivating Stainless Steel: Process, Nitric vs. Citric
Passivating stainless steel after welding: what it does, why it's not pickling, nitric vs. citric acid, the ASTM A967 process step by step, and how...
Read article
How to Remove Heat Tint From Stainless Welds
The straw, purple, and blue discoloration around a stainless weld isn't cosmetic — it's where the part rusts. What heat tint is, why it matters,...
Read article
Best Alternative to Norton Series 1000 Deburring Wheel
Why pay a premium for a familiar name? See how Pro-Graad RF Series 1000 convolute wheels deliver professional deburring and finishing performance for 30–50% less...
Read article
Five Best Maintenance Tools for Equipment Longevity
Discover the best maintenance tools to extend equipment life and reduce costly downtime. Expert rankings with practical implementation advice.
Read article