Laser Marking in Semiconductor Manufacturing
Jimani recently shipped a 30 Watt OEM Langolier to Progressive Manufacturing in Texas. They had a...
The laser is rarely the slow part. On a typical job shop order, the beam finishes its work in a few seconds. Then the part sits there while an operator pulls the next one from a bag, locates it on a fixture, and puts the marked one back in the box. That handling is where most of your per-part cost comes from. In our job shop experience, handling time often exceeds marking time, which means how you pack, present and specify your parts can move your price more than the laser itself.
Quick Answer
Every part goes through three steps: unpack, locate on the fixture, repack. The laser is on for only a small slice of that cycle, so total cycle time is marking time plus part placement and removal.
Think of it as a loop. An operator removes the part from whatever packaging it arrived in. The part is accurately located under the lens, usually on a fixture so the mark lands in the same spot every time. The laser runs. The part goes back into its original packaging, and the next one comes out.
Only one step in that loop involves the beam. The rest is manual, and it repeats for every piece in the order. That is why a shop that prices honestly looks at the whole cycle, not just what the laser does.
At Jimani, our job shop pricing is built on a standard shop rate for the work, not on what your part is worth. A low-cost bracket and an expensive housing take the same time to mark, so the part's value should not change the price of marking it.
Every mark, whether it is text, a logo or a bar code, is built from individual vector lines drawn by the beam. More lines and more depth mean more time. In our own examples, the word "Jimani" in 0.1" bold Arial on anodized aluminum takes about 2-3 seconds. The same word in a single-line stick font takes about 300 milliseconds. Put that bold text 0.010" deep into a steel plate and the time climbs to about 25 seconds, because deep engraving takes multiple passes at 5-10 inches/second to remove thin slices of material.
Now put that next to the handling side. In one example from our own published work, a logo or part number on a credit-card-sized piece of anodized aluminum, bulk packed, ran at about 5 parts a minute. That is roughly 12 seconds per part. If the laser needs 2-3 seconds for a mark in that range, the operator is spending most of the cycle on the part, not the laser. Speeding up the beam would barely change the total.
We see the same pattern across laser marking speed and cycle time questions. The beam is fast. The loading is the variable.
Packaging is the most common culprit. Bulk-packed parts can be pulled and returned quickly. Parts that arrive wrapped one at a time, or that need extensive unpackaging and repackaging, take longer, and that extra labor is usually an added charge.
Geometry matters too. Round parts that must be marked all the way around need a rotary indexer and a tiled mark. Parts with marks at different heights need the Z axis repositioned. Parts with a mark on two sides need to be flipped and relocated. Each of those is a second trip through the loop for a single part.
Small batches with variable content are the other big one. We have run batches of 1-50 cylindrical stainless steel parts where size, shape, mark placement and content all changed, and every part carried a unique serial number. Accuracy is extremely important when each part carries its own serial number. A machine setup charge applies for each part type, and a one-time graphic charge covers a logo or complicated programming. Serial numbers and bar codes are quoted individually because the variable data changes the work.
When we quote, we ask about packaging and placement before we ask about the mark. Those answers tell us more about your cost than the artwork does.
Start with packaging. If the surface can tolerate bulk packing, it is the cheapest to handle. If it cannot, such as a cosmetic finish that scratches easily, protect it, and accept that the protection has a handling cost. That is a fair trade, and we would rather talk it through before the parts arrive than after.
Look at the mark itself. A single-line font draws far fewer lines than a bold one, so it finishes in a fraction of the time. That only works if the mark is still readable for your application, so it is a question for your quality team, not just a cost lever. Depth is the same story. Specify what the application needs, since every extra thousandth means more passes. Where a depth is required for wear or compliance, we hold to it. Where it is not, shallower is faster.
Finally, give us the placement, the quantity, and how the parts will be packed. If the mark has to wrap around a cylinder or land on two faces, say so. Our FAQ covers how those choices change the setup, and our success stories show how we have handled hard fixturing problems for other manufacturers.
Send us a sample, the mark you need, the quantity, and a note on how the parts will be packed. We will look at the mark and the packaging and tell you where the time will go on your job. If your application is more complex than a flat part with a part number on it, that is the kind of thing we work through every day in the job shop. Send us a sample and we will run the numbers together.
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