Pattern drafting in LibreCAD

At the start of the new year I commented about trying to figure out what to do next. I described my feelings as reaching the end of one road and trying to decide which road to take next. You might assume there were only a few options, but in reality there are many. One option was to look at languishing projects to pick back up. I have two rather large projects. One will take me many years, the other is about half done.

The really large project is sodaCAD. I started a software project back in 2010, but let it drop because I lacked the skills to work on it. SodaCAD is my attempt at an open source pattern making software. Most commercial or enterprise level pattern making software packages are very expensive and have onerous maintenance fees and licensing. I've always wanted to provide an alternative.

After much research and a few different attempts, I stumbled upon LibreCAD. LibreCAD is a free alternative to AutoCAD. Commercial pattern making packages have AutoCAD at its core. LibreCAD contains many essential CAD drawing functions already, so it is a perfect foundation to build on. I actually learned how to draft patterns using AutoCAD in college. What I lack is programming skills, but that is slowly coming.

Before I can work on optimizing LibreCAD, I had to test it out and actually try drafting a pattern to test its capabilities. It took a bit of time, but I managed to draft a bodice front.*

LibreCAD is by no means the ideal solution (not yet!) for this kind of work. It is, in many ways better than Adobe Illustrator or Inkscape. Illustrator and Inkscape lack precision and efficiency. Inkscape in particular, tends to be fuzzy when it comes to numbers. Say you draw a square that is 25 x 25, but you move one side out 1 inch. Now you have a rectangle that is 25 x 25.95. LibreCAD has no issues with precision. It does lack efficiency for pattern making, so I made many mental notes for improvement.

LibreCAD is available for use now on Windows, Mac, and Linux. If you do decide to try it out, I would recommend watching some video tutorials on YouTube. The interface and drawing functions take some learning. I have no idea how long it will take to get SodaCAD ready for use.

*This pattern piece is available in sodaCAD source files for demonstration and testing purposes.

Shoulder slope pattern correction

LisaB asked me to explain:

Raise the shoulder at the neckpoint 3/8" on front bodice to correct shoulder slope problem. I need to apply this correction to my t-shirt pattern too.

I tried my first cardigan sample on several times and noticed the shoulder seam was not pointing in the right direction. The seam at the neck point was pointing toward the front rather than laying right on top of my shoulder. I also looked at my t-shirt pattern and observed the same problem. This indicates a possible shoulder slope problem or shoulder to hem length problem on either the front or the back bodice or both. To figure this out, I ran a basting thread in my cardigan shoulder seam area and looked in the mirror to see where I needed to make the adjustment (no fitting buddy or dressform at my house, unfortunately). I also pulled out my blouse pattern and compared the shoulder seam. In the end, I needed to move the shoulder up at the neckpoint 3/8" on the front bodice. This increased the shoulder to hem length on the front just enough to allow the back bodice to relax backward and position the shoulder seam right on top of the shoulder.

Not everyone will need to make this adjustment. This was a problem inherent in my own patterns to fit me. The drawing below, I hope more clearly shows how the shoulder seam was laying.

Adapting a block pattern into something else pt. 8 : the final pattern alterations and a finished design

It took me quite a while to finish up the pattern modifications for this style. I would try on the first sample and look in the mirror, then go back to the pattern many times. There were a few things that were not right. Each time I would try it on, I would pull the jacket forward so the back neck rested higher. This would throw off the shoulder line. Finally, I realized I needed to raise the back neck and raise the shoulder at the neck point on the front bodice. This situated everything nicely. The first jacket is definitely a wearable first muslin, but the second sample turned out great.

Final pattern alterations:

1. Remove extra wearing ease. I noticed that many similar cardigans are not really that much bigger than the average t-shirt, so keep this in mind when adapting your t-shirt pattern.
2. Raise the back neck 3/4". I had left the original neckline of the t-shirt, which ended up being lower than I wanted for the cardigan.
3. Raise the shoulder at the neckpoint 3/8" on front bodice to correct shoulder slope problem. I need to apply this correction to my t-shirt pattern too.
4. Shorten sleeve length.

All that's left is to double check the seams to make sure they match and cut the pattern out of tagboard. This jacket is now ready for further iterations. Maybe a shorter or slimmer version. A waist line with darts. It's all possible.

If I wanted to take this cardigan into production, I already have some of the information needed and recorded in my blank forms:

1. Style and cutting sheet lists all the pattern pieces with spec drawing.
2. Sewing spec lists each step of construction.
3. Fabric swatch cards with content information.
4. Recorded the pieces in the pattern catalog.

To turn this into a more complete spec package, I just need to add:

1. Finished pattern measurements for quality control
2. Grading spec
3. Cost analysis

I've also added a wash testing data form, which is not yet available (soon!) and not included in the book. This form records shrinkage information which is critical for knit fabrics.

Knitting: Myrtle Cardigan pt. 4 - the sleeves

I started knitting the sleeves a couple of weeks ago. The instructions for the sleeves, like the body, are dependent on the size. This makes sense because the lace pattern needs to be adapted for each size in order to work. The sleeves continue the all over lace pattern in order to seamlessly blend with the body. I had to read the instructions several times before I completely understood what was supposed to happen.

I am knitting the medium size. I followed the instructions exactly (I think) and this is what I ended up with.

For the medium size the pattern is written so that the lace pattern is repeated except for the underarm area. In this area you maintain stockinette stitches until the sleeve increases are completed. Then you start chart F for the length of the sleeve. I knew that if I saw this every time I wore it, it would drive me crazy. I'm not sure if I did something wrong, but this does not seem right.

There is a sleeve increase chart, but it is not used for the medium size. I debated ripping out what I had done and restarting with the sleeve increase chart, but I wasn't sure I really wanted an all lace sleeve. Instead I decided to center just one repeat of the lace down the center of the sleeve and do the rest in stockinette. I think it might work better with the sleeve cap decreases.

A Pattern Review for J. Bernardoni's Nutcracker Cavalier Doublet Jacket

In the ballet world, the Christmas season is Nutcracker season. This year, I was commissioned to remake the Nutcracker/Prince jacket for Utah Artist School of Ballet's Children's Nutcracker. The director requested red stretch velvet but other than that I designed it. She approved the design and I had a very short period of time to build 2 identical jackets, 4 days to be exact to make photo call. The director was understanding that the jackets for photos would be wearable and only partially decorated. Within a day, I found out one of the two dancer's would not be there for photos. Since this was a short build, I bought a pattern to use from Tutu.com. Pattern No. JB11002 Nutcracker Cavalier Doublet by J. Bernardoni, a New York costume designer. Tutu.com is the only source for this pattern and I believe it is not actually listed on their website but can be ordered via phone. (I am not affiliated nor was I compensated with tutu.com or the pattern designer). Also this pattern comes one size per an envelope and is printed on heavy white paper. I always trace off my patterns and never cut out the original that way I can make changes as needed.

Reviewing the Pattern

In costuming, I am used to not working with pattern instructions. Oftentimes, patterns are drafted in house, cut into fabric and handed over to the stitcher, sometimes with a design sketch and brief verbal instructions. This pattern has instructions but they are written very simply and with the assumption you know what you are doing or built something similar in the past. I briefly skimmed through before I began. I noticed that 1/2" seam allowances are included. Hem allowances are 1" with 1/2 seam allowance making for total of 1 1/2" turned up. The pattern designer, included a pattern pieces diagram with a cutting guideline. He doesn't include yardage amounts nor fabric recommendations. Having made doublets in the past I estimated approximately 2 yards per jacket. My fabric was 60-62" wide which in the end was an over estimate of 1/2 yard per. Usually, I like to buy 10% more than is needed for future repairs or alterations, slightly more if the fabric has nap or one way pattern direction. The pattern designer lists two different flat-linings; coutil (for the body, epaulets and collar) and washed muslin (for the sleeves) and one interfacing of fusible hair canvas.

Fabric Choices

For my project, stretch velvet was chosen. The director wanted it to fit generically so it could be used for years to come. I was hesitant to use a stretch fabric when the look and design is for a woven. Often with men's ballet tunics, woven fabric tops can be made in two pieces,  an over vest and a stretch under shirt with sleeves attached. This enables the dancer to have full movement of arms. I have seen some built without using the undershirt method and instead stretch panels are used in the sides or wherever needed, etc... This pattern doesn't use the undershirt nor does it mention using stretch fabrics. This is where experience and knowledge of a show's choreography is necessary so changes to the pattern can be made. I chose to go completely with stretch fabrics for the jackets. My flat-lining fabrics were 4 way stretch cotton lycra for  the body, shiny milliskin for the sleeves (gives just a little bit of slickness) and rayon bemberg for the collar and tails. Interfacings (from Fashion Sewing Supply) used were shirt crisp for the collar and tricot deluxe for the body front and tail sections. (I am not affiliated nor was I compensated with Fashion Sewing Supply, just really love her products).

Pictured here is a side back. The interfacing is in white and applied to the tail portion. This is where I deviated from the pattern instructions which has you apply fusible hair canvas to the tail lining. The fabric being pinned on top is the flat lining. 

Side back ready for flat lining as stated in pattern. 

I made the side seams with 1" seam allowances as well as the
center back.

The jacket is completely flat lined except the tails. This is the way I would have created the pattern. One thing that bothered me about the original patterns is that the lining stops short of the side seam allowances. (see picture). This would look unfinished if the sides were ever let out. Most likely they probably won't be, (most dancers have similar sized bodies) but you never know. I think the pattern designer did this to eliminate bulk which in theory it is a good idea. Also, the front and back are constructed separately, sleeves put in flat and then the sleeve seam and side seams are sewn in one. I don't like this so much. I like to have the sleeves separate and and the jacket finished up to the sleeve insertion for a first fabric fitting. This way I can make adjustments to the shoulder line and arm scye if needed. I have to make a note here, I made the jackets up completely with no fittings nor measurements of dancers ... got to love regional/community theatre).  

Finished linings in the tail. 

Almost done!

I only have a female dress form so the jacket looks a little odd. As I was pinning the trim on, I made the decision to hand tack the trim. Velvet can be quite finicky and I didn't it want it to stretch the fabric out. I think a walking foot on a machine would have been nice. One day I will buy one...

Even with hand tacking, I got some weird pulling but on stage it was not noticeable. I also got some bagging out on the sleeve, probably due to the flat lining (milliskin) fighting the velvet. These are some of the reasons I wished I used a woven fabric instead. 

Overall, I really liked this pattern. I could tell it was made by a costumer who knows what they are doing. Personally, I would have been fine without seam allowances included. I look forward to trying out more of his work. 

The Nutcracker

The Prince