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I'm getting back into sewing after a long abscence and I saw a tip somewhere regarding patterns that don't have seam allowances included... My question is ...do you add a seam allowance to these patterns on the inside of the drawn line or the outside? I've never bought one of those type patterns, but I was curious, just in case.

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It has been my experience that seam allowances are included when using patterns that do not draw the seam line. The standard seam allowance for garments is 5/8 in. The standard seam allowance for home dec is 1/2 in. Hope this helps. You might be interested in some of the patterns in my shop . I have many that are for beginners with great instructions.
Thanks Terri, ... Is your shop online? ....hope so.
Thanks again, that clarifies things in this foggy mind. ; )
Ah yes, but the OP asked about patterns where the SA is specifically *not* included. This is a different kettle of fish to those where they are simply not shown. You need to read the pattern envelope/ pieces carefully. If they are not included then obviously they need to be added to the outside of each piece. Failing that draw round the pattern piece onto the fabric with tailor's chalk, cut out a reasonable distance around, machine just insode the chalk lines and then trim. If they are simply not shown, they will be clearly stated on each piece (generally 5/8" or 1.5 cm for dressmaking) and you can either follow your needleplate markings on the machine or draw them on, whichever.

Vogue, MaCalls, Butterick and Burda all sell good entry-level patterns available on-line.
Some older patterns, i.e. Burda did NOT include seam allowances. Suggest you measure the pattern piece and against the finished measurement ( i.e. hips, wrist) on the pattern. Most American pattern companies will allow 5/8 inch seam allowance, but not always, i.e. knits, Euro patterns may not use 5/8 inch seam allowance.
OK, that's what I figured, but I never thought about checking finished measurements.
Thanks to you, also.
A good way to add seam allowance when the pattern doesn't have one is to pin your pattern to your fabric leaving space between pieces for the seam allowance. Than use a rotary cutter that has a seam guide on it. Just put the guide next to the fabric (I use 1/2") and cut away. Works great. I use the small cutter as it goes around cuves very easily.
I can't find a guide for my rotary cutter. I have an OFRA. I'm not sure, but I don't think that they make these anymore.
For patterns without seam allowances, such as Burda magazine, you add them to the outside of the lines. I use easy pattern to trace. This is in the interfacing section of the fabric store. You can actually sew on it and it is pretty transparent. Anyway, to add seam allowances. I trace the pattern (sew line) and leave extra easy pattern around the drawn lines. Then bring it to the sewing machine and sew your seam allowances with out thread. Use the lines or a guide on your machine to match up to the drawn line. Then the needle is at the end of the seam allowance. If you don't have a guide on your machine, then put down a peice of tape 5/8" or whatever you want your seam allownce to be. If you use a wing needle and use close (short) length lines, you can then just tear it away.

Burda magazine and Ottobre also do not include seam allowances and they must be added.  I also use pattern ease, wonderful stuff !  to trace patterns.  

As with before mentioned by "A" , you have to read the pattern instructions/envelope to see if the seam allowances are included or not and proceed from there. 

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