its a great site for that i want a filter now for my 12" i`m a bit worried about the heat that may build up in the tube

what size are the sheets ?

Never had a problem with heat, The filter film blocks 99.999% of the light.

Good luck if you do have a go. By the way, the filter film comes in A4 sheets from FLO.

I think FLO caters for pre-made filters on their site for 12" scopes.

just had a look ,a may just get one sheet and make a square shaped one just spoke to a guy on the phone he reckons that i would need another glass filter for the other endthe web cam/cannon 10d,but that may be not so we will see cheers

Just had a look at the Baadar Solar Continuum Filter and some images on the web.

The sunspots definitely look sharp and clear with this.

As with everything in this hobby, all depends on cash.

Good Luck.