Copying 35MM Slides

I've got a couple of thousand slides, going back between ten to thjirty
years, that I haven't looked at for years. It occurs to me that
Voightlander projector parts and decent projection screens are probably rare
as hen's teeth these days, so maybe I should copy those slides to disc.
So - looking for ideas - does anyone endorse copying by photographing them
(and if so, do you know of any publicized routine for doing so), or is
scanning the only way to go? IOf scanning, is there a way to do it 'on the
cheap'? My scanner is a Canoscan FB 62900, so it doesn't enter into the
plot.


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