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The Pluribus Journal

Guides, comparisons, and straight answers from a working print shop.

We publish the answers we give customers over the phone. Paper weights, binding choices, pricing reality, and the border logistics that keep Southern California printing moving. No listicles. No fluff.

Manufacturing/8 min read

3D printing vs injection molding: cost, lead time and how to choose (2026)

A plain comparison of 3D printed production and injection molding: what a mold really costs, how long each takes, how the price per part changes with quantity, and how to launch without tooling.

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Materials/7 min read

PETG vs ABS vs ASA vs carbon-fiber nylon: how to choose a 3D printing material

A plain guide to the plastics used for functional 3D printed parts: what each one is good at, how hot it can get, how it handles sun, and which to pick for your part.

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San Diego/7 min read

How much does 3D printing cost in San Diego? (2026 guide)

What actually drives the price of a 3D-printed part — material, print time and quantity — with real catalog prices, order minimums, shipping at carrier rates and how our instant quotes work.

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San Diego/7 min read

3D scanning and reverse engineering in San Diego

How 3D scanning turns a physical part into an STL, OBJ or editable STEP file — what sizes work, how the process runs, and when calipers are the better tool.

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San Diego/7 min read

Fast prototypes for San Diego startups and engineers

How to get functional 3D-printed prototypes in 2–3 business days in San Diego: picking the right material for each stage, design tips that save iterations, and how ordering works.

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Rack Mounts/6 min read

NVIDIA DGX Spark & GB10 rack mounts: every option compared (2026)

Every way to put a DGX Spark or any of the eight GB10 mini PCs in a rack: 3D-printed vs steel, 1U vs 2U, single vs dual, and which boxes actually fit.

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Rack Mounts/6 min read

How to rack a two-node GB10 / DGX Spark cluster

A practical install guide for two GB10 mini PCs in one 2U rack space: spacing, ConnectX-7 cable routing, airflow, power bricks, and assembling a printed dual mount.

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Rack Mounts/5 min read

Mac mini M4 rack mount options: 10-inch vs 19-inch, one or two

The M4 Mac mini is smaller and taller in proportion than the old one, which changes how it racks. Here's what fits where, and why 2U beats 1U.

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Rack Mounts/5 min read

Lenovo ThinkCentre Tiny vs Dell OptiPlex Micro for a homelab rack

The two most common used mini PCs in homelabs are within a few millimetres of each other. Here's how they compare in a 19-inch or 10-inch rack, and what to watch.

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Rack Mounts/5 min read

10-inch rack starter guide for homelabs

What fits in a 10-inch rack, how rack units and mounting hardware work, and how to get a mount for any device, even one nobody makes a bracket for.

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Drone Parts/7 min read

DJI O4 Pro mounts: which one fits your FPV frame

The O4 Pro camera is the same width as the O3 camera but bolts on differently, and the O4 Lite is a much smaller unit altogether. Here is how to pick a mount that actually fits your frame, and what to print it in.

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Drone Parts/6 min read

TPU vs carbon-fiber nylon for FPV parts: what to print in what

TPU 95A bends and survives crashes. PA6-CF and PAHT-CF are stiff, light and heat-tolerant but won't absorb an impact. Here is how to match the material to each part on your quad.

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Drone Parts/6 min read

Printed FPV parts kits: GEPRC Mark4, Mark5 and Pavo20

What's in our printed parts kits for the GEPRC Mark4 (O4 Pro), GEPRC Mark5 (O3) and BetaFPV Pavo20 Pro, what each part does, and how to install them.

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Car Parts/6 min read

Replacing discontinued car parts with 3D printing (and when not to)

Brittle clips, cracked trim and missing interior pieces on older cars are good candidates for scanning and reprinting. Brakes, seatbelts and steering are not. Here is how the scan-and-reprint workflow works, and where we draw the line.

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Car Parts/6 min read

ASA vs PETG vs carbon fiber for car interior parts in Southern California heat

A sun-parked dashboard can average around 157 °F within an hour. That's hot enough to soften some common printing plastics. Here is how ASA, PETG and the carbon-fiber grades compare for car interiors in hot, sunny climates.

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Car Parts/5 min read

Tesla Model Y and Model 3 3D-printed accessories: what's worth printing

Some printed accessories for the Model Y and Model 3 fix real annoyances, like a dangling J1772 adapter, crumbs in the floor vents or a cupholder that won't take a big bottle. Others are gimmicks. Here is what's worth printing, which years each part fits, and what to print it in.

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