Edit: I was typing as @Just1MoreDave posted.
Originally posted by Pentaxis Are there any practical folk here who could suggest a solution? It's so frustrating, to be beaten by such a tiny mechanical feature.
I feel your frustration. I've faced the same problem and mangled a few screws during my 'learning phase'.
It seems that there are two issues: seized screws and deformed screw heads. My camera repair workbench is fairly well equipped, and I would try one or more of the following approaches. I can't say whether any of this would be guaranteed to work in your case.
Seized screws
- Carefully apply a gentle heat with a micro torch, butane BBQ lighter, or pointed soldering iron tip. Let the flame just 'lick' the screw heads. Sometimes, heat will cause the screw to disengage. Care is required when applying heat to ensure that other parts of the camera are not damaged.
- Apply a small dose of penetrating solvent or oil, such as PB Blaster. Use a small screwdriver head to 'drop' the oil onto the heads (pre-spray into a small container and dip the screwdriver). Let soak overnight. (
CAUTION: Do not apply heat to parts that have been treated with a solvent).
- It's possible that a threadlocker (sort of a glue) had been applied to the screw threads or base of the heads. Specific solvents may be used to soften a threadlocker, but heat may also work. There are plenty of websites that discuss the misery of threadlockers; here's one for example:
What's a good solvent for blue Loctite? - The Garage Journal Board Extractor
- There is a tool called a
screw extractor; here's an example of a set of precision extractors:
Precision Screw Extractor Set - iFixit
- Basically, the idea is to dig into the deformed screw head sufficiently to get a 'purchase' onto the head.
Edit: Here is an interesting note at the iFixit page:
NOTE. This tool requires some mechanical aptitude and careful feel. If you stripped a screw while carefully using the correct type of driver the first time, it is possible you will not be successful with this tool. Screws that are cross-threaded, jammed, or glued in place will be very difficult to remove with any tool. Our Screw Extracting Pliers are easier to use, but will not grip recessed screws.
FYI, a Dremel is a brand name of a small handheld rotary tool. It can take precision bits that can be used to make very small cuts into materials, among other jobs. (It's one of the most versatile tools I have; I never realized it would be so useful)
- Craig