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heavy cotton sweater knit - prewashing?
How to I prepare cotton sweater knit before sewing?
Nancy Mac

Nancy Mac  Friend of PR
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Michigan USA
Member since 10/31/06
Posts: 25
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Date: 9/6/12 3:29 PM

Hi, just purchased a beautiful cotton sweater knit for V8839. It looks like regular knit on one side and soft & fuzzy on the other. Does anyone know how I pretreat this before cutting/sewing? I'm a bit worried that the soft fuzzy side might pill if I wash it in my machine. I probably would flat dry (I think?) Do you think drycleaning it might be the right way to go? Or steam it with my iron. Oh, how I hate this part of the process. I'm really excited about the fabric, but don't want to ruin it :)
-- Edited on 9/6/12 3:31 PM --

njw424
njw424
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Missouri USA
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In reply to Nancy Mac <<


Date: 9/7/12 9:48 AM

How do you plan to care for your finished garment?

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NJW

Nancy Mac

Nancy Mac  Friend of PR
Advanced Beginner
Michigan USA
Member since 10/31/06
Posts: 25
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Date: 9/7/12 11:29 AM

That's a good question, I'd probably wash it in delicate and dry flat. But, I think that it would be much easier to wash the fabric already cut in the pattern pieces (larger blocks to allow for shrinkage) & lay them out to dry, than try to wash the whole 2 1/2yrds and set it out flat to dry.
What I just did was cut 1 small pattern piece (I have a bit more fabric than called for). It's in the washer right now. I'll let it dry, look at the results and then measure it to the pattern piece to see how much if any shrinkage there is. Wish me luck
-- Edited on 9/7/12 11:30 AM --

a7yrstitch
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a7yrstitch  Friend of PR
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In reply to Nancy Mac <<
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Date: 9/7/12 12:48 PM

Good plan on testing the fabric. I am now totally dependent upon online fabric shopping. Just been at it for about a year and a half so I still getting used to the idea. Also buying lots of knits that I hadn't had previous experience with.

I'm buying enough extra fabric now for shrinkage (no running back to the store for a little extra) and to be able to have 1/6 of a yard dedicated to testing, pretreatment, fusing, etc.

I've been using nice 6 x 6 inch swatches for testing. I did see an idea that I liked better for accuracy. Instead of cutting the swatches to size, use a sharpie to mark the size of the swatch directly on a piece of fabric that is overcut just a little.

So far, no surprises on the viscose/rayon type knits that are relatively new to me. Well, except that they have been extremely stable and most often exhibit no changes when pretreated.

Because we never have cold water for a good part off the year (when it is 100+, the cold comes out of the tap almost hot) and because some PR members have posted that they prewash more than once to wring the extra shrinkage out of some of their cottons, I have started doing a double prewash and dry on anything with a cotton content.

And, due to the water temperature issues where I live, I prewash all my cottons on at least warm. You can see the problem. If I prewash on cold during the winter, the fabric will shrink on a so-called cold wash in the summer. Ask me how I know Worse, ask how my son found out when he visited from NY.

Now, darn it, I've got to go get a new washing machine for prewashing.

------
I have no idea what Apple thought I was saying so be a Peach and credit anything bizarre to auto correct.



Member since 12/31/69
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Date: 9/13/12 11:41 PM

congratulations on you newly purchased beautiful cotton sweater knit. Well I guess you should try one method that you prefer a small piece like dry cleaning to see the result, and if you don't like it try another one.I'ts like a sort of testing.

a7yrstitch
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a7yrstitch  Friend of PR
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Texas USA
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In reply to a7yrstitch <<


Date: 9/13/12 11:49 PM

The new washing machine is here. The features we wanted only came with the models that included steam. A little scary when it comes to pretreating fabric but maybe I can figure how to work with the steam on the things that I just want to preshrink and don't want tumbled around, like heavy sweater knits. More preshrink pretesting.......

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I have no idea what Apple thought I was saying so be a Peach and credit anything bizarre to auto correct.

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