Replacement lenses

Beam Buddy is now selling replacement lenses for your CO2 laser. We are offering USA CVD ZnSe AR coated lenses fro ii-vi infrared, a world leader in lenses.

You can get yours at

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They are now on sale :slight_smile:

when will these be ready for the boss laser machine? How long after ordering will it take to get?

What diameter lens does a Boss laser use? We have 20mm diameter lenses in stock, and they ship within a day or two.

Sorry about that I thought this was the better focus lens. I am interested in the high resolution laser head for my boss HP-3655 laser and the time frame if I pre order one?

What makes the lens/tube special? “Higher resolution” doesn’t mean much to me without something more concrete to back it up. I can’t find anything beyond that on the site.

Not being snarky. I just don’t see value in the product without additional detail. :slight_smile:

This reminds me of this saying which helped me tremendously in a former life

The best way to sell the problem it solves is to have a side by side comparison of the item presented for purchase vs “the others” showing a “higher resolution and a lower resolution.

My 2 cents


We are expecting to ship the Boss version in 4 -6 weeks, but as with everything else due to covid-19, shipping is just a guesstimate.

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A quick google provided me with more info on said “Higher resolution” laser head.

November of last year:

Here is their FaceBook page: Redirecting...

And to quote information from their site:

“The Beam Buddy high resolution laser head is a replacement head for your laser. It allows you to engrave at a much higher quality than the stock laser head that came with your laser. Its design makes the laser beam more focused into a smaller focal spot than the standard laser head, which makes the engraving result more detailed. It is suitable for engraving high precision photos and also a good performance on 3D engraving. … Both versions of the high resolution laser head are capable of producing a dot size that allows for engraving at a true 800dpi. Adjustable air assist capability is built right into the head. The higher resolution creates a significant increase in detail on photographs. Your creations will be incredibly life like and produce very accurate reproductions of your photos. The head itself has a blue anodized finish that looks very sharp. (We love to bling things out!)”

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The information available does not “show the output of this upgrade up close.

Anything can look great from far away even billboards.

I too have run into the same frustration as @rojhan

Yeah… it still doesn’t tell me “how” :slight_smile: I found those same links when I searched.

“Here’s a tube and a lens. It’s higher resolution. trust us.”

How’s it constructed? Cutaway view? Machining tolerance? Compound lens? …

“Its design makes the laser beam more focused into a smaller focal spot than the standard laser head” means there is some form of optical design change. If there is an optical design change, what are the knock-on effects?

I don’t have any trouble (other than “CFO”, AKA wife :)) spending money on something that will make my life easier. But ~2-3x the price for “it’s higher resolution” doesn’t help me make the buying decision.

Understood. I provided what I found in my quick look. I see you found similar information.

I did not search for examples. I believe these are compound optics but I have not played with these myself. @Grumpy_Old_Man

I’d prefer they call it a compound lens system, which is what it is. To me saying it’s “high resolution” reminds me of the days when everyone advertised everything as “high definition” without defining what that meant.

To their credit, they do say what it actually does. “Its design makes the laser beam more focused into a smaller focal spot than the standard laser head…” Somewhere else I even read where they say that on anodized aluminum they are able to get a spot size of .03mm. So, that’s something concrete. That’s what it is designed to do.

I haven’t had a chance to try the BeamBuddy but I do have the compound lens system that’s sold by Cloudray and designed by Russ. I can say that the system I bought does indeed do what I expected it to do. It allows me to get a much smaller dot than I could with a standard, single lens. My understanding is that their design is different from the one I have in that the two lenses are not in contact with each other. This has some supposed advantages. They’ve been tight lipped about what the specs are of the lenses they are using. They haven’t said what focal length, type, coating, distance from each other, etc. And I get why they don’t. It took them time to figure it out and manufacture a product. Good for them!

I know the specs on the compound setup I have with regard to the lenses. Does it matter? Not really. It does make it easy for me to replace a lens if I need to however and I can get it from wherever I please. If you need to replace a lens on a Beam Buddy I suspect you’ll have to get it from them. Again, not a big deal if they aren’t price gouging for the lenses.

Two things I’d really like to see that I’ve yet to see. First, a comparison of the BeamBuddy to the compound lens system from Cloudray. If I thought the BeamBuddy could give me a smaller spot than the cloudray version then I’d buy it. Or if it could give me the same spot but had some other quality that I felt made it better. But I’ve yet to see an objective comparison between the two. If they’d like to send me one for testing I’d be happy to post some actual test results and comparisons. Better yet, send one to Russ and have him do a comparison.

The other thing I’d like to see is some reality talk. I’m afraid that most users will buy this thinking it will immediately make their engravings better which I don’t believe is the case. Why? Most people aren’t getting the best they can from their existing lens as it is. I see so many posts from people with 2" lenses trying to engrave photos at 300-600 dpi and wondering why they can’t get their engravings to look as good as others they see. Or they try to use greyscale instead of dithering. They clearly don’t understand the process. And for someone who has a vague understanding, they see the .03 dot claim and think, great! Then they go engrave on wood and again are frustrated.

I believe the BeamBuddy or any other compund lens is a tool. If people don’t know how to properly use it, they’re going to blame the tool. That’s a shame. I’m sure it’s a great tool but I’m also afraid a great many people won’t think so because they don’t know how to use it. They also probably don’t understand the limitations of the material they’re working with or other factors that can affect engraving quality.

The person for whom this is a useful tool doesn’t need the marketing language. Do some tests, different substrates, and show the results of dot tests from the BeamBuddy compared to a 1.5". Show me how, on different substrates, using only dots, it compares to a commonly available 1.5" lens. That would be all I’d need to sell me on this product. The marketing language is for the guys who don’t understand it in the first place and probably won’t get any better results than what they’ve been getting.

@rojhan I can attest to the fact that compound lenses are not snake oil. They very much work. I can go dig up Russ videos and link them here if you’d like to give you an understanding of the principles of how they work. I don’t claim to understand all the optical science but I can’t argue with results.

But I’ll also say, switching to a compound lens should be the last step in your quest for good engravings. Everything else has to be there first. You’ve got to understand why dot size even matters, how to measure it, and how to turn those measurements into settings that matter.

The depth of focus on my compound lens is extremely shallow. For me a change in focus height of just .3mm can make a difference. This means your material must be extremely flat and parallel to the plane of the laser.

I would buy one as well.

A video showing it in action then a closeup of the finished engraving would help me “see” why I should invest in the product.

I second that the compound lenses work and are not snake oil. What I want to see is a side by side comparison with the CloudRay compound lens so that It justifies the higher investment of almost $200.

$66 vs $260