Yes, but do it in small amounts so not to over use on or the other. And they must be disposed of the same way you would the paint.
No, it is not recommended to mix primer and paint together as it can affect the quality and finish of the paint job. It is best to use primer as a base coat before applying paint.
Sure. You can mix them. Why would you? It will not help prime the walls or wood. The primer coat needs to be applied separately to be effective.
Only if the 'flat paint' is water based too.
You can paint water base paint over an oil based primer after allowing sufficient drying time. Check the instructions on the label because drying times can range anywhere from an hour to 24 hours.
If the primer and paint are the samebrand, and are recommended to be used together. yes. no problems will occur. primer coats are generally thinner (lower viscosity) and simply are used to provide adhesion to top coats, so unless you are simply using the primer as an expander, i dont see the point.... but yes is the answer
It will work over another latex paint, however it won't be as scrubable as a normal top coat, and it won't adhere as well as a paint over a primer. Better to apply the primer, then the paint. If the surface is clean and deglossed though, you really don't need a primer and can coat the surface with a quality wall paint.
Yes, it is possible to mix primer with paint. This can help improve the coverage and adhesion of the paint, especially on surfaces that are difficult to paint. However, it is important to follow the manufacturer's instructions and test the mixture on a small area before applying it to the entire surface.
No, they will not mix,
You do NOT use regular paint as primer. It contains none of the qualities of primer.
Don't mix them, your inviting trouble
No, it is not recommended to mix acrylic paint with latex paint as they have different properties and may not blend well together.
Don't mix them, your inviting trouble