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Hey Nick,
White light solar viewing is a great and inexpensive way to get into solar viewing, for myself I purchased a pre made filter that goes into the end of my tube, and are more than safe to use, make sure you buy a quality one, things to remember though, check it by holding it up and making sure there are no holes in it, though they look rather fragile, they are still quite tough, also I have heard people not taking off the finder scope from their main scope and obviously getting burnt that way, and make sure you don't buy one of those solar filters that work at the eyepiece like the thread on filters, I think they were banned but occasionally they do show up, as the tube will heat up and the glass in them will crack, if you can't find the pre made ones at all that go on the front of the tube you can make your own from baader solar filter film.
Clear skies to you
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