Written by Paul Montgomery, Marketing Leader at PRAB. Published August 4, 2026. Last updated August 4, 2026.
Quick answer: Metal chip briquetting is the process of compressing loose machining chips and turnings into dense, uniform pucks using a hydraulic briquetting press. Metal chip briquetters reclaim residual cutting fluid trapped in the chips, reduce scrap volume for storage and transport, and increase the price a scrap buyer will pay because dense, dry briquettes are easier to handle and melt more efficiently than loose turnings. PRAB’s E-Series chip processing systems are proven to increase scrap value by up to 25%, and PRAB’s chip processing equipment overall reduces machining scrap volume by up to 91%.
If your shop generates aluminum, steel, copper, titanium, or brass turnings, you’re already paying twice for that scrap — once in the cutting fluid it carries away from the machine, and again in the storage and hauling cost of moving loose, low-density chips off-site. Briquetting addresses both problems in a single process step, and it’s one of the highest-ROI upgrades available to a metalworking operation that’s still handling chips loose or wringing them without densifying the output.
A briquetting press takes processed chips — typically after they’ve passed through a wringer or centrifuge to remove bulk fluid — and forces them through a hydraulic compression chamber. The result is a dense puck, usually a few inches across, that holds its shape without a binder. The compression itself does double duty:
Not every briquetter is built for every metal, and this is where a lot of buyers get burned — a press sized and pressured for steel turnings won’t necessarily perform on soft aluminum fines or stringy aerospace swarf.
| Feedstock | Key Consideration |
|---|---|
| Aluminum, steel, copper, brass turnings | Application-specific briquette formats and sizing matter — a general-purpose press handling mixed metal feedstocks needs to be validated against each material’s compressibility |
| Powders and fines | Requires higher-pressure briquetting than long turnings to achieve a puck that holds together |
| Aerospace alloy swarf | High-value, low-volume material where consistent density and fluid recovery both matter more than raw throughput |
| Magnesium chips | Requires presses specifically listed and designed for magnesium, given the material’s reactivity and handling requirements |
| Lower-volume operations | Small, specialized presses are available for shops that don’t need a high-throughput system but still want the fluid-recovery and density benefits |
Briquetters are sized by hourly throughput, not by shop size or machine count. A press that’s oversized for your actual chip volume sits idle and underperforms on ROI; one that’s undersized becomes the bottleneck in an otherwise automated chip processing line. The right sizing conversation starts with your actual measured or estimated lb/hr of processed chips feeding the press, not a rule-of-thumb estimate based on headcount or floor space.
Hydraulic presses are the standard for metal chip briquetting because they generate the consistent, controllable pressure needed to maximize briquette value through uniform density—inconsistent density means inconsistent scrap pricing, since buyers price the load partly on how predictably it will behave in their process. PRAB’s DualPak™ Briquetter line is engineered specifically around this consistency requirement, with hydraulic systems purpose-built for metalworking scrap rather than adapted from biomass or agricultural briquetting equipment.
Briquetting rarely stands alone in a well-designed system. The typical flow is: chip conveyor → shredder or crusher (for bulky turnings) → wringer or centrifuge (bulk fluid removal) → briquetter (final densification and residual fluid recovery) → recovered fluid routed to a coolant recycling system for reuse. Each stage compounds the value of the one before it. A briquetter fed by properly wrung, sized chips performs better and requires less maintenance than one trying to compress wet, tangled, unprocessed turnings straight off the machine.
Densification and fluid separation through briquetting have been shown to increase scrap value by as much as 25%, driven by lower moisture content, higher bulk density, and more consistent material for the scrap buyer.
Some briquetters are engineered for mixed metal feedstocks, but performance depends on matching the press’s pressure profile and format to each material’s compressibility — aluminum, steel, copper, and magnesium do not all compress the same way, so this should be validated for your specific mix rather than assumed.
A wringer or centrifuge uses centrifugal force to spin bulk cutting fluid off loose chips. A briquetter goes a step further, using hydraulic pressure to compress the wrung chips into a dense puck, extracting additional residual fluid and reducing volume for storage and transport.
Briquetting turns a cost center — loose, wet, low-value scrap — into a recovered asset on two fronts: the cutting fluid you get back, and the higher price the densified material commands. The equipment decision comes down to matching press type and pressure profile to your actual feedstock and sizing it to real hourly throughput, not shop size. Done right, briquetting is one of the fastest-payback additions to an existing chip processing line.
Paul Montgomery is the Marketing Leader at PRAB, Inc., where he leads digital strategy, content, and demand generation across the company’s metal scrap conveyor, chip processing, coolant recycling, and industrial water treatment product lines. He has more than 20 years of B2B marketing leadership experience, including CMO and VP roles, and has led teams that delivered results such as 300% year-over-year revenue growth. Paul also brings applied expertise in AI-driven search optimization (AEO/SEO) to PRAB’s content strategy.
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