I am always on the lookout for parabolic mirrors of any kind. I would like to find a source of “budget” reflectors for big lights so they can be accessible to anyone. If the quality is good these are not exactly cheap but not that expensive either. I will soon see if they are any good.
aliexpress $127.07 5%OFF | Non-porous 320MM Reflector For 1000W Marine Searchlight Short-arc Xenon Lamp 390MM Caliber Glass Reflector 淘宝网 - 淘！我喜欢