Photography-why is the cantilever pan/tilt so expensive?

You can try any wooden shelf and see if you can make it. The toughness of wood is too high, so this part of cantilever platform is not suitable for wood.

Photography strives for perfection, especially in places that need to be moved, precision crankshafts, etc. , all related to precision machining machine tools. Although the current expensive cantilever platform is far from worth the price, it is difficult for you to find a cheap substitute.