VEVOR Pneumatic Paste Liquid Filling Machine, 5-50ml Bottle Filler, Bottle Filling Machine, Stainless Steel Liquid Filler with Pedal for Milk Water Juice Essential Oil Shampoo Cosmetic Honey Lotion

You can use the following compressors,. https://www.vevor.com/air-compressors-c_10039/vevor-air-compressor-2-1-gallon-900w-2-2-cfm-90psi-70-db-ultra-quiet-oil-free-p_010592198571

This machine can not pump body butter and body scrub consistency.

Yes, this can be used with Body Lotion.

I have one but I have not used mine yet but it is not too difficult

Yes it is put together well. This is my second one. I think the only thing you really have to worry about is the cleaning of the inside. You have to make sure that it is dry after you clean.