My 2 cents...1st made a 6", then some little ones, now on a 10". The 10" is in some ways easier. Things don't happen so darned fast...of course the grinding took just a teensy bit longer but that part is fun too. I agree with Dave in that I would probably never go "store bought" again. After the first look through my first scope , well, you've all been there. Clear Skies Rodg