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Mass Finishing

Reliable Tumble Blasting and Centrifugal Barrel Tumbling

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Cost effective finishing for small parts

Are you tired of:

Spending too much labor finishing your parts?

You should not be forced to manually finish parts when there are cost effective mass finishing options.

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Lower your labor costs

Eliminate the bottleneck of manual labor by replacing slow hand-finishing with outsourcing to efficient, high-volume batch processing.

Repeatability & Consistency

Our automated systems ensure repeatable results on every part, removing the variables and errors inherent in human processing.

Superior Surface Quality

Achieve a uniform finish on even the most complex geometries that is simply not economical to replicate by hand.

Small metallic parts, including gears and bushings, on a pile of assorted mass finishing media.

Mass finishing is consistent

1. Controlled Process Parameters: Mass finishing machines operate with precise control over speed, media type and size, compound selection, and cycle times. This ensures each batch receives identical treatment.


2. Uniformity Across All Parts: The tumbling or tumble blasting action in mass finishing means every surface of every part gets equal exposure to the finishing media, guaranteeing a consistent result throughout the batch.


3. Elimination of Human Error: Manual finishing is subject to inconsistencies based on operator skill, fatigue, and individual technique. Automated mass finishing removes these variables.


4. Repeatability: Mass finishing recipes can be saved and replicated exactly. If you need the same finish a month from now, it's easily achieved. Manual finishing is far harder to perfectly duplicate.

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We know the pain of hand-finishing parts—because we used to do it, too.

We used to spend hours hand-blasting and deburring. It wasn't sustainable. We switched to mass finishing technology to cut costs and save time—and we can help you achieve the same results.

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Tumble Blasting - How it works

Our tumblblasting is a high-efficiency mass finishing technique where parts are loaded into a rotating cage or basket. This rolls the parts effectively exposing every surface to a high-velocity stream of abrasive media propelled by a blast wheel. As the parts tumble, the abrasive shot/grit strikes them from multiple angles, scouring away mill scale, rust, and heavy burrs even in hard-to-reach crevices. For the customer, this thorough mechanical action translates directly to consistency and cost savings; because it processes large batches simultaneously with uniform results, while creating a textured surface profile that ensures superior paint or powder coat adhesion, or can be used to peen a part to increase its fatigue life ultimately extending the lifespan of the finished product.

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Lower your finishing costs

At Pi Fabricators we know that you need your small parts deburred and finished at an affordable rate. In order to do that, you need a supplier with mass finishing equipment. The problem is not many shops have mass finishing equipment and those that do often have high minimums which leads to you spending valuable labor hours hand finishing small parts. We believe you should be able to have your parts cost effectively mass finished. We understand the importance of using your labor efficiently which is why we offer mass finishing with low order minimums.

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Streamlined

The predictable results of mass finishing reduce the need for extensive part-by-part inspection, saving time and resources.

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Scalable

Mass finishing can easily be scaled up to handle larger volumes, maintaining consistency even as production increases.

Controled

Mass finishing offers control over surface finishes, from rough deburring to very smooth, polished results.

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Shot Peening Small Parts with Tumble blasting

Tumble blasting can be used to shot peen your small parts. This can significantly improve the fatigue life of your steel parts by introducing compressive residual stress into the surface layer. Here's how it works:

Surface Bombardment: Shot peening bombards the steel surface with small spherical metallic, ceramic, or glass beads. The force of the impact creates tiny indentations on the surface.


Compressive Stress Generation: These indentations don't just leave marks, they force the metal to compress beneath the impact zone. This creates a layer of compressive residual stress below the surface.


Resistance to Crack Initiation: During regular operation, steel parts experience cyclic loading, which can cause microscopic cracks to initiate at the surface. The compressive stress layer in shot peening acts like a shield, counteracting the pulling forces (tensile stress) that tend to open these cracks.


Slower Crack Growth (if present): Even if a small crack manages to form, the compressive stress field can slow its growth. This gives the material more time to resist failure and allows for earlier detection during inspections.

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Cost-Effective Pre-Weld Prep

Tumble blasting offers a cost-effective solution for pre-weld preparation for small parts such as gussets. By automating the removal of contaminants, rust, and mill scale, tumble blasting significantly reduces the manual labor typically required for these tasks. This automation leads to faster turnaround times and lower labor expenses, making it a budget-friendly choice for achieving clean and weld-ready surfaces.

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Explore Our Integrated Capabilities

Fabrication

Stop letting fabrication delays and surprise costs derail your operation. Get the quality work you need, on time and on budget.

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Engineered Wear Solutions

Stop costly downtime. Our wear solutions increase critical part lifespan, leading to maximum uptime and lower maintenance costs.

Hardfaced steel sprocket weldment for a conveyor chain in the wood products industry. Explore Engineered Wear Solutions

Machining

Stop letting supplier delays and surprise costs derail your business. Get the quality parts you need, on time and on budget.

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