Richard,
Before running to shops for telescope parts, consider looking through telescopes made on the internet and this includes the Iceinsoacae website.
The ingenuity and lateral thought applied to the hobby runs deep - some manufacturers never imagined their product would or could be used to build a telescope. Over the years, I have ground mirrors which were once porholes, glass table tops and even a glass dance floor from a hotel. Look around, steal with your eyes and you will be surprised at what you can do
Good luck,
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