I use these often:
https://www.textures.com/free
https://cgaxis.com/free/
As well as free models you can find on Turbosquid or CGTrader. There are lots of free models at the Sketchup Warehouse. https://3dwarehouse.sketchup.com/
Finaly, this has long been a good source of free model searching: https://www.cadnav.com/
It was out of commission for a while but it came back.
Rob Holmes
------------------------------------------------------------------------------------------------------------------------------------------
3ds Max (2023-2025), V-Ray 6.2, Ryzen 9 3950-X Processor, DDR 4 128MB, Gigabyte Aorus X570 Master motherboard, Sabrent Rocket NVMe 4.0 M.2 drives, NVidia RTX 4090, Space Pilot Pro, Windows 11 Pro x64, Tri-Monitor, Cintiq 13HD, Windows 11 x64
------------------------------------------------------------------------------------------------------------------------------------------