Mermaid Dottie,
Did you try using leather needle in your sewing machine? I believe Singer still packages them in two/pack maybe singles. Use the 100/16 for heavy weight. I punched and sewed leather with these needles. So it should go thru neoprene. Also, a trick for stitching sticky fabric, is to use wax paper between your feeder feet under the neoprene and use a teflon presser foot on top, or another layer of wax paper. You can sorta see thru the wax paper and it feeds great, then just tear it off like toilet paper!
Good Luck!
Mermaid Marla
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