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The Mechanical Finishing Zone (also known as Mass Finishing) is a research hot spot for everything you need to know about the processes of edge breaking or surface conditioning of unfixtured workpieces. Read articles and find suppliers of media, buffing, polishing and abrasive blasting at this site-within-a-site.

 

The latest from the Mechanical Finishing Clinic

Powder Coating Clinic: Discoloration of Metal-Flake in Powder

Q. We have a metal-flake silver powder color that we use regularly. If the surface is abraded with a Taber wheel—or even a pencil eraser—it darkens significantly in the abraded area. We even have this problem when our parts scrape against cardboard packaging. Our supplier suggested we switch from an unbonded leafing aluminum to a more expensive bonded product. We tried the bonded leafing aluminum, but we still have the same problem. Certain types of friction create this effect, seemingly those that perhaps have a higher coefficient of friction. Do they remove the aluminum flake from the surface? Can you explain this problem and tell us why it happens with some abrasives and not with others? What can we do to stop this? 

Ask an Expert Published: November 01, 2016

Mechanical Finishing Clinic: Recoverable Blasting Media

Q. We blast with a No. 9 glass bead media in our blast cabinets, but are interested in what our hourly media cost would be and how cost compares to other medias?

Ask an Expert Published: November 01, 2016

Mechanical Finishing Clinic: Pressure Blasting for Heavy Mill Scale Removal

Q. We are blasting heavy mill scales off of medium-sized parts in our suction blast cabinet with 80-grit aluminum oxide. We want to continue to blast by hand in a cabinet but would like to be more efficient. Can you suggest a quicker process?

Ask an Expert Published: November 01, 2016

Mechanical Finishing Clinic: Steel, Stainless Burnishings for Edge Dulling

Q. We have a precision 5 x 6-inch stainless machined part with various small holes. We need to dull the many edges and brighten the part. We’ve tried vibratory mass finishing, but the medias wear down and lodge into the holes. What finishing system would you recommend?

Ask an Expert Published: November 01, 2016

What’s New in the Defend Trade Secrets Act of 2016

The Defend Trade Secrets Act (DTSA) of 2016 passed with overwhelming support and the Act is now effective, impacting how a company can protect its assets. Below is a recap of what is new and what every company should be looking to do in light of this new law.

Ask an Expert Published: October 01, 2016

Parts Cleaning Clinic: Zinc Shot Blasting, Zinc Plating Alternatives

David S. Peterson talks zinc shot blasting, zinc plating alternatives, and advantages to reducing the heating of alkaline cleaners.

Ask an Expert Published: October 01, 2016

Visual Finishing Options In Mechanical Finishing

There are only three visual finishes (with variances of each) with mechanical finishing when visual effects are important: bright-reflective, satin-matte and directional or non-directional lines.

Ask an Expert Published: July 01, 2016

Legal Q&A: Changing Compliance Expectations

How should companies respond to the government’s increased emphasis on compliance?

Ask an Expert Published: April 01, 2016

Mechanical Finishing Q&A: Mechanical Finishing with Bowl Vibratory Machine

We have heard a lot about other types of vibratory and high energy systems. What is your recommendation for the best machine?

Ask an Expert Published: April 01, 2016

Mechanical Finishing Q&A: Blast Finishing for Brightness

What media is recommended for a brighter finish?

Ask an Expert Published: April 01, 2016

Mechanical Finishing Q&A: Multiple Grain Abrasives for Long Life and Consistent Finishing

The excessive belt wear creates uneven finishes and productivity loss because of constant abrasive belt changes. What solution do you recommend?

Ask an Expert Published: April 01, 2016

Mechanical Finishing Q&A: Eliminating Large Machined Aluminum Part Damage in a Large Vibratory Tub

How can we eliminate our part damage with small, medium-cut, ceramic triangular media?

Ask an Expert Published: February 01, 2016

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