#2 Can I use this for crushing grapes for home producing wine
The users guide states it is not made for juicing grapes, or uncooked vegetables or fruits. That being said, If you cut up or mash the grapes first, It works fine. It is a more of a fruit/veggie saucer that removes seeds, peelings, etc. You do not get just juice, but depending on the type of a grape, more like a thin to thick sauce. You just need to strain it to get the juice out. Grape skins do break easily in this since there is nothing to cut them. If you cut them open they will juice just fine. I usually run my fruit through twice if the pulp (seeds and skins) are still very wet when they come out. The left over pulp is very dry after the second time. You may have to clean out the screen several times since the skins of some like to stick to the inside too. If you are making a large batch of juice, or don't have time to cut grapes and stop and clean the screen, I would suggest using a juicer made for grapes. You can also stomp or mash the grapes first, then you would have more of a mash that should work just fine. If you soften the fruit and skins by steaming or slightly cooking them, they work better too. Any fruit or vegetable that is not soft does not easily juice. I cut apples in 1/4s and steam them in a little bit of water till they are softer before saucing them for applesauce or apple juice. So, for a small amount of grapes, you are OK, for a large quantity, it would be a slow process.
