I chose the Ender 3 Pro because it had good revues and was inexpensive. It came as a kit and had to be assembled. The major parts were assembled. You have to be prepared to play with settings to get a good print. I made many small test parts to check out different settings. Small parts are necessary for testing as 3D printing is a slow process.
The attached photos show a McCoy Steam Chest and Steam Cylinders. The Steam Chest took 12 hours to print and the cylinders took 3 1/2 hours each. This is still quicker than it takes me to machine the parts from aluminum
