First of all, excellent service as usual from FLO, delivered following day. Bought this for the upcoming partial solar eclipse. Unfortunately I have not constructed my filter yet so I can't give an opinion. Will do this in the near future.

I bought this solar film to make some white light solar filters for glasses and my binoculars. Works fantastic and all you need is a craft knife and some double sided Blue Peter sticky tape. I made two solar glasses and a pair of solar filters for the binoculars out of the film provided and could easily have made two more glasses if I'd copied the templates. I did make two extra cardboard rings to make the double filters for the binoculars. Note of caution, if using with the binoculars I'd fix the filters on with sticky tape so that the wind could not blow them off or be easily knocked off by elbows of other people near you. When using solar filters your eyesight is the most important consideration.

very good product and not difficult to work with. does what it says on the packet. only downside is the price. hence 4 stars and not. product was well packaged and promptly delivered. thanks.flo.