Almost a disaster.

As a precaution ,tie a piece of strong nylon thread to the body of the diagonal and super glue the other end to the side of the mirror.

Eugene

Thanks Eugene, that stuff sounds great. and your tip on attaching a safety cord is a very useful tip too!!

Hope you changed your trousers after that one Dave :lol: A very close call indeed.

Believe it or not a few scratches on your mirror,even deep nasty "gouges", would probably not noticeably affect the performance of your mirror.

The thing to watch for is the percentage of light lost.
This would not be much, even if the seondary made a few deep gouges.

After all ,there is already a large round hole in the middle of the mirror.

The "shadow" of the secondary!

Dave

You could use a silicone transfer adhesive film (sticky tape). Some rubbers are difficult to bond to (especially silicone or nitrile rubbers)-silicone adhesive tends to work well. I can send you a sheet of it if you want.

Hey you must have had all the luck going that night.

DB

Dave

You could use a silicone transfer adhesive film (sticky tape). Some rubbers are difficult to bond to (especially silicone or nitrile rubbers)-silicone adhesive tends to work well. I can send you a sheet of it if you want.

Thanks John,

Now that sounds very interesting. Could you get that in good DIY stores? Do you know is there a brandname?