Lens spanner wrench – how to avoid a disaster while using this tool !!!

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Lens spanner wrench, and some tips on how to use it safely. I got many lenses on my bench over the years, with some heavy damage caused by this tool. Also, I am sure that some of my customers were trying to use some other things instead of a lens spanner like 2 flat screwdrivers or 2 sets of tweezers to remove the front lens group assembly. The end result of this is almost always a very expensive disaster. So hopefully this video will help you to avoid such a disaster and complete your repair successfully. You don’t need expensive tools, if you know what you’re doing. So this is a cheap lens spanner wrench. I don’t remember how much I paid for it, since I bought it a long time ago as a spare one, but it wasn’t expensive. These days you can buy a much better one for about 10 or 15 bucks. This is not something I would use while at work, but I don’t expect you to buy an expensive tool, just to use it for a single lens repair. So as a rule, I’m going to be using the same cheap kind of tools here on this YouTube channel and my website, to get the job done. Although pretty much all of them have some kind of twist or are modified in some way to make them acceptable and I’ll talk about this in future videos. Okay so the 1st thing you need to know about this tool is that there are several kinds of tips available. The 2 most popular ones are flat, that’s why some people use 2 flat screwdrivers instead, which is a crime if you ask me. And the 2nd type is pencil like sharp, that’s why some people use tweezers, which is also a crime. So before you buy this tool, take a look at your lens and determine which one you need. It is possible that outside of your lens there is one type and inside there could be some elements requiring the other one. So it’s probably best to buy a lens spanner with replaceable tips or a set of 2 lens spanners with 2 kinds of tips. And trust me, 10 or 15 bucks is well worth it. The front glass element is usually expensive, in some cases it can set you back several hundred bucks. But that’s not the only problem. It might be impossible or very hard to find it, depending on the manufacturer. So for example Sigma or Tamron won’t sell you any parts, same with Nikon but for some more popular Nikon lenses you can find some parts on eBay or other Internet websites. With Canon, especially in the US, you just call them and you get the part within a couple days. Even if you don’t know the part number, they will help you find it. Now assuming that you can get the part you need, it’s still not the end of your problems. And that’s because the new front glass element might require adjustments. And these can be a pain, or simply impossible to do at home, again, depending on the lens. So I hope you get the point here, it’s well worth to pay 10 or 15 bucks and avoid all of these problems.
Once you get a brand-new lens spanner wrench, take a close look at the tips. There might be some imperfections making the tips incredibly sharp. If so, you can sand them with a high grit sandpaper, like 1000 or 1500 grit. Don’t go overboard with this so that they don’t become rounded, especially the flat type, otherwise they will slip easily. Once done, test them on a piece of plastic or a sheet of paper. If you cannot make any scratches under any angle, they are good enough. I also put small pieces of Kapton Tape on this thing, since I really don’t trust it.
With the right tool, the job is going to be much simpler and much easier. Even though it’s a very cheap tool. Of course you still have to be very careful and pay attention while using it.
Hi, I am Mike, independent camera repair tech with over 10 years of experience, working specifically on cameras and lenses. I love it! And from time to time I record a video showing some teardowns, reviews, repair tips of photo gear. Subscribe if you wish, there is more coming soon! All questions are welcome here!!! Although, I definitely don't know all of the answers… :)

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