I've been looking for tutorials and did find one. I've got a bunch of old, 100% wool sweaters that are big and baggy and I'd like to felt them and make them into nice boiled wool cardigans for the girls - they'd be cute, and warm, and nice for outside in the spring and fall. I'm envisioning zipped cardigans not unlike some of the zipped Woolrich boiled wool jackets for women (basically a sweater with a zipper).
Has anyone done any zipper insertion on felted wool? D'you know, would I need to sew on facing or ribbon or something as the true support for the zipper?
Also, I've read in a couple places that the sweaters should be cut up before felting (cut off each arm, the side seams, etc., and even the ribbing separately)? Since I accidentally felted a sweater some years ago and it survived it just fine with its ribbing and seams intact, I suspect that I don't really need to do this? I might try with one of the sweaters I am least in love with first, and see how it comes out (intact) and then decide whether to cut the others up. I like the idea of reusing the ribbing along sleeves, collar, waistband "as is" as part of the cardigans.
Here are the tutorials I've found thus far:
http://www.instructables.com/id/Make-a-Childs-Cardigan-from-recycled-felted-wool-s/ (I would want a zipper instead of the open cardigan that she designed, which only fastens at the top). And, I would prefer the look of no ribbon at the juncture, just a zipper. I simply don't know how well it would hold up?
http://resweater.blogspot.com/2010/01/resweater-wool-sweater-faqs.html
http://www.ehow.com/how_7729541_boil-wool-sweaters.html
http://www.craftstylish.com/item/2259/how-to-felt-sweaters
I've found plenty of tutorials for cute wool felt mittens from recycled sweaters, and so on - just nothing of the sweater/cardigan style I have in mind.
And my final question, for those who've recycled wool sweaters - is there a particular seam finish which you prefer? I'm a 4-H sewer .... I'm inclined towards encasing the seams with grosgrain ribbon, which would be a very neat clean finish, but could probably talk myself into doing a serged or zig-zag seam. 
I'm pretty excited about this - I've a couple sisters (and aunts) who like to garage sale (I don't). But if these turn out well, I may tell them to be on the look-out for wool sweaters while they're bargain-shopping, and might be able to make all the nieces and nephews (the little ones anyway) felted wool zip-up cardigans for next year's Christmas!




) is thick, but soft and flexible (LLBean shetland wool sweater I think) -- but the sleeves are a bit short on me, and the waist is a bit high. I think it lost about half its size over time as a result of the felting (it just kept shrinking, every time I washed in cold water, it shrank, I guess as a result of the one time in hot water). If I end up with some stiffer felted wools, it will probably be OK, since it would be for a jacket moreso than 'indoor' clothing.....



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