Convert Neoprene Pattern to Fabric

[Mermaid Galene]

I have made two neoprene tails, but now I want to make a fabric tail. The performance spandex I'll use has a four way stretch. Given that this fabric will stretch way more than neoprene, I know I'll need to shrink my neoprene pattern before using it on spandex.

Does anyone here know from experience how much I should shrink my neoprene pattern for spandex? 20%? More? I'm having a hard time visualizing it.

Thanks!

[Princess Pearl]

This article has a section on altering woven fabric patterns to knit- it's basically the same idea for altering a sort-of-stretch fabric to a very-stretch fabric.

http://www.threadsmagazine.com/item/4160/know-your-knits/page/3

[Ilyena]

My patterns for fabric and neoprene are between 1-3inches different. Less around the knees while around the waist it's 3 inch different. Maybe sew a fabric to your neoprene pattern, then put itnon and take it in. Its better to have too much than too little.

[Mermaid Galene]

Thanks, guys!

[Cordelia]

Can't wait to see the new tail! There are so many great prints to choose from, too. Good luck!

[MermaidBrandie]

With four way stretch fabrics you don't need a seam allowance. :) I found a fantastic youtube video that basically had me measure the circumferance around me from my belly button to my ankles every town inches then divide by four. I traced out the measurements on an old sheet and that's my pattern. For the fluke shape I traced my monofin on the fabric, lining up the monofin where my feet would go. I forget the video, but I'm sure it won't be hard to find.