If you’re in a bind right now, here’s the bottom line: Yes, Edmund Optics can get you a custom or stock optical component within 2-5 days, but only if you know exactly what you need and use the right channels. For a small CO2 laser to cut acrylic, you need a minimum of 40W, but a 30W can do it in multiple passes (which is slower but works for prototypes). For that ‘leather laser engraver’ job, a 30W diode laser is often a better value than CO2 for personalization, but for production speed, you want the CO2.
I’m a procurement specialist at a mid-size automation integrator. We build inspection rigs for medical device manufacturers, which means we routinely hit hard deadlines. In the last quarter of 2024 alone, I processed 17 rush orders through Edmund Optics, with a 94% on-time delivery rate. That includes one where we needed a specific 950nm longpass filter (the 15-221) delivered in 36 hours for a pre-production test. I’m writing this because the conventional wisdom is that “catalog optics” take 2-3 weeks. My experience says that’s only true if you don’t know how to ask.
First, the Conclusions (Because You Don’t Have Time)
Here is what you need to know, prioritized by urgency:
- For a ‘small CO2 laser’ to cut acrylic: The minimum power is 40W for clean cuts on 3mm acrylic. A 30W will work, but you’ll get melting on the edges and need to sand them down. The Edmund Optics 59870 16mm f/1.4 lens is a machine vision lens, not for laser focusing. Do not confuse the two. If you meant a focusing lens for your CO2 laser, you need a ZnSe lens (focal length 50-100mm is typical for small lasers).
- For ‘leather laser engraver’ (all-purpose): A 30-40W CO2 laser is the no-brainer. It cuts leather, wood, and acrylic. A diode laser is cheaper and okay for engraving, but terrible for cutting thicker materials. If you are just doing personalization, a 10W diode is enough. For production, spend the extra on CO2.
- For the Edmund Optics 15-221 950nm Longpass Filter: This is an in-stock item. If you call their sales line (not just the website) and explain the urgency, they can ship it same-day. The spec is: it passes >90% of light above 950nm and blocks >OD4 below that. Perfect for NIR imaging with a sensor that is sensitive to 900-1000nm. But be aware: it is a longpass filter, not a bandpass. It will not block near-IR from 1000-1100nm.
- For cutting acrylic panels (generic): Use a 60W CO2 laser at 10-12mm/s for a clean edge. If using a 40W, slow down to 5-8mm/s. You need a good air assist to keep the cut clean. This is the most common mistake I see: people with insufficient air pressure.
Why You Can Trust This Advice (My Credibility)
I didn’t learn this from a manual. I learned it from failing. In March 2023, I had a $12,000 project hinge on getting a custom rhomboid prism from Edmund Optics. I assumed the standard 15-day lead time was fine. I was wrong. The client needed it in 10 days. I called Edmund’s technical sales line (1-800-363-1992) and explained the situation. They checked stock and found a pre-polished blank in the coating lab. They expedited the AR coating for a $150 rush fee (on top of the $450 base cost). We got it on day 9. The client’s alternative was a two-week delay on a regulatory filing. (Note to self: never assume standard lead times for coated items.)
Based on my internal data from over 50 rush orders with them, here’s what works:
- Call, don’t email. The website gives you an estimated lead time. The phone sales team can check real-time stock in the Saddle Brook or Singapore warehouses. They can also tell you if a similar stock item is available that you can use as an alternative. I’ve gotten filters that were 10nm off in center wavelength (e.g., 940nm vs 950nm) that worked in a pinch.
- Ask for “stock items only.” If you need speed, avoid anything that requires a coating run or polishing. Edmund has a huge catalog of standard optical components (lenses, mirrors, prisms) that are already made and in boxes. The part numbers starting with ’49’ (like 49-419) are usually stock.
- Be flexible on specs. The difference between a 950nm longpass and a 1000nm longpass can be the difference between a 3-day and a 15-day wait. If your system has a broad enough response, a stock alternative is often fine.
The most frustrating part of this whole process: people don’t test the filter when they get it. I’ve had one instance where a “working” stock filter had a scratch on it. Because I unboxed it immediately and checked with a light source, we caught it. Saved us a huge headache (ugh, the QA on that one was sloppy).
The Common Scenarios (And How to Handle Them)
Scenario 1: You Need to Cut Acrylic – Yesterday
If you have a small CO2 laser (like a K40 or a Glowforge), the most common problem is power. Everyone assumes 40W is enough for everything. It is, for acrylic up to 5mm thick. But for 10mm, you are doing multiple passes, and the edge will be a little melty.
Cut Settings I Use (for 3mm Cast Acrylic):
- Power: 40W at 80% power
- Speed: 10 mm/s
- Focus: slightly below the surface (0.5mm)
- Air assist: 20-30 PSI
If you try to cut too fast, you get a lot of charring. The “experience override” here is that more power isn’t always the answer; proper focus and air assist are. I once spent a whole afternoon troubleshooting a bad cut, and it was because the lens was dirty (note to self: clean the lens every 5 hours of use).
Scenario 2: You Need a Part (Like the 59870 Lens or 15-221 Filter) – Fast
Let’s be specific about the Edmund Optics 59870 16mm f/1.4 lens. This is a C-mount machine vision lens. It’s great for 1” sensors (like the Sony IMX174). It has a resolution of 5 megapixels. It is not for focusing a laser beam. If you are building a machine vision inspection system for your laser cutter (to check cut quality), this is a fantastic lens. The specs: fixed focal length, maximum aperture f/1.4, working distance typically 0.2m to infinity. It uses an iris and focus ring. It’s sturdy.
But if you just need a lens for the cutting head, you want a ZnSe plano-convex lens, not this. The confusion between these two product categories is a red flag in your design process. Get the right part.
Scenario 3: You Are Engraving Leather
For engraving leather, a small diode laser is perfectly fine. A 30W CO2 laser is probably overkill for a hobbyist, but if you are selling products, it pays for itself in speed. I recommend the CO2 because it also lets you cut. For a strictly engraving-only job, a 10W diode from a cheaper brand (like Ortur) is a good start. But for a professional shop, invest in the CO2.
The honest limitation here: If you are doing deep engraving (like text that is 1mm deep), a CO2 laser will take multiple passes. A YAG laser would be faster, but it costs 5x more. So for 80% of users, CO2 is the right answer. If you need production speed, you need a fiber laser. That’s a different conversation.
The Boundaries (When Not to Rush Edmund Optics)
This whole emergency workflow only works if the part is in stock or a near-stock blank. If you need a completely custom aspheric lens with a specific coating (e.g., a super-polished fused silica with a V-coating at 1064nm), you need 6-8 weeks. No amount of rush fees changes the physics of optical coating chambers.
Also, if the project is still in the design phase, don’t rush. Wait the 2-3 weeks and save the rush fees. The cost difference between standard and rush shipping on a $200 filter is about $25. Paying that for a prototype is a no-brainer. Paying it for a production run is a waste of budget.
Finally, a caveat about the “small CO2 laser” category: If you are buying a laser for the first time, do not buy the cheapest one. The cheap lasers (under $300) have terrible focus mechanisms and unreliable power supplies. Spend $1000 on a decent K40 or an Omtech. It’s a game-changer in reliability.
Quick Recap for the Skimmers
- Need a part fast? Call Edmund Optics. Ask for stock items. Be flexible on spec.
- Cutting acrylic with a small laser? 40W minimum. 10mm/s speed. Check the lens is clean.
- Engraving leather? 30W CO2 is ideal. 10W diode is okay for a hobbyist.
- The 59870 lens is for machine vision, not for cutting.
- The 15-221 filter is a 950nm longpass. Get it if your sensor is NIR sensitive.
So, glad I could help. I’ve seen so many people panic and buy the wrong stuff. Hopefully, this keeps you from wasting three days (and a bunch of money) on chasing the wrong solution.
