Home type sewing machine,not pro job,been playing to find can and can't do with it,. So here's some tips. I never sewed anything tell June 2011. My buddy Nuwt R.I.P. that did this type of stuff for me an many others,pass on about 15years ago. Watching Nuwt do his thing was always amazing. Finding out more stuff with test trys all the time. Hand cranking good for first 3 or so stitchs and also round corners,also to start machine to sew start it with needel up,not down. For those that say ya can't do auto seats on your home sewing machine on the low $! Old Kenmore yardsale $5 to 20 plus another $30 of thread and parts for it and away we go ,things that work on vinyl; and a home sewing machine; I tryed other stuff and failed but this works; Max thread size is V92 with a 18 leather needel, 6 to 9 tenchion on nob. adjust bobbin so it just bearly will not drop when holding thread. Only can get V92 at a upholstery supply,Looks good an is very strong,but $22 a spool big enough for 20 or 30 cars?Don't wast time as did looking at your local fibric store. Use a Walking foot adtachmint for housewife machine,there only about $15 and wroth every cent. Only way to get feed to make nice stitchs. Far better to use 1/4in. foam backing if your going to try sew it in vs glue 1/2in. foam on back after sewing.. Sewing vinyl upside-down works best by far. These new photos are of test door panel in T-bucket,we're making even better one next,but found out so much stuff from test about mounting to panel board. About how to pull, glue and staple. Took a few weeks to work out the above info,with mistakes along the way but now it works. Ya there things that would be EZer with a pro walking foot machine,but I only have a yardsale $5 Kenmore made back in 1972. I'll add a photo above of the end of this tech,how this all comes out on my own hotrod after I did my son's T. This all worked,but if you get a shot at a real good deal on a pro walkingfoot,do it*,if it will go slow/most sew at spaceship speed an your work will be hitting the wall before you even see it move. .