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These photos will come in handy when you're putting new fabric on the chair. Make sure to take the photos in good light so that you can see the chair really well. Don't forget to turn the chair over to get photos from below, as well. Also, get up close and personal, too, making sure you get all the small details. If you're reupholstering a dining room chair, the base of the chair may come out, which makes the process easier. Typically, the base is screwed in, so turn the chair over and look for the screws holding it in place. Use a screwdriver or drill to unscrew them.  Some seats just drop into place, in which case you can just push them out. If they're glued in, you may need to carefully pry the seats out or use a solvent that dissolves the glue. If you're doing more than one dining room chair, make sure you mark which seat came from which chair, as the seats will fit more easily back into place on the original chair. If your chair has a loose cushion, pull it out. For other chairs, you may need to take off legs or the rockers at the bottom to get to the fabric. Rivets are mostly decoration these days, but they will still hold the fabric in place if you don't remove them. Use needle-nose pliers to pull them out. This can take a while if your chair has a lot of rivets. You can save these to put back on, buy new ones, or just leave them off when you reupholster the chair. Often, it's easiest to start at the base of the chair since that's where the final edges and seams are usually hidden. Take off the fabric that's covering the bottom first. You may need to take the tacks or staples out before the fabric will come off.  Use a staple remover or a hammer to take the tacks and staples out. You may need pliers to rip the fabric off. Try to take it off in one piece if possible. Start from the bottom and gently pull off the other pieces of fabric. If the chair has piping near the bottom, pull that off first, removing tacks and staples as needed so you can take the fabric off. Then, attempt to take the back off if yours has one. Move around the chair, taking off the different layers of fabric in large pieces. Use pliers to help you rip the pieces out, working along the seams of the chair as you do.  Some chairs have strips of metal tacking holding the fabric in place. You'll need to pull this out with pliers to get the fabric out. Save all the pieces of fabric, piping, and welting to use as patterns. Don't just throw these items away. They'll make it much easier to figure out the pieces you'll need to put your chair back together. You may even be able to reuse the piping and welting if it's not too damaged. Make sure to note where each piece comes from, such as bottom fabric, left side panel, left side arm, etc. That way, you know where each one belongs when you are trying to piece it back together. Note where the top and bottom or front and back side of each piece is, as well.  Also, indicate where the fabric was sewn to another piece or where it had piping along the edge. Note any special tucks, pleats, and folds so that you can repeat these when making up the new upholstery fabric. You can just use a permanent marker to write on the fabric since you'll be tossing it anyway. In most cases, you're going to want to replace the stuffing in the chair, as it will likely be worn down from the years. However, if it's still in good condition, you can save it to reuse. Keep it for now, though, so you can use it as a pattern.  Batting is a layer of fabric that sits between the outside fabric and the foam. It adds a layer of protection and it keeps the cushioning in place. On large armchairs, you may not be able to replace the batting and foam since it's shaped to the chair. In that case, leave it in place.  In some cases, you'll need to cut stuffing that has been glued into place. Use a knife with a long blade to slide neatly under it, such as a serrated knife or a snap-blade knife. Slide along and cut as carefully as you can.
Photograph the chair from all angles before pulling the fabric off. Remove the seat from dining room chairs. Take off rivets and other decorative items. Pull the fabric off the bottom. Remove the other pieces of fabric one-by-one. Mark each piece of fabric as you pull it off. Remove and examine the batting and cushioning.