Showing posts with label cutting. Show all posts
Showing posts with label cutting. Show all posts

Friday, July 23, 2010

Rotary Cutting Mats

Rotary cutting mats are not created equally.

Most modern-day quilters cannot fathom cutting out quilts by tracing around cardboard templates and wielding a scissors. Despite the fabulous quilts early piecers created with these simple tools, rotary cutters and mats have dramatically reduced the time investment in each project while increasing piecing accuracy.

Don't sacrifice the benefits of this cutting-edge technology (pun intended) by allowing your cutting mat to distort your accuracy. Soft plastic mats are typically made of white translucent plastic and often have a smooth side and a textured side. These soft mats are the only ones that will roll easily for storage. Their softness allows the surface to accept pins to help manage difficult fabric. However, the soft surface can also scar from rotary cutter blades, and repeated cuts in the same area could affect the accuracy of your cuts.

Hard plastic mats are thinner than soft mats, and don't scar as easily. Some brands are guaranteed not to warp, crack or peel. However, generic mats made of green plastic will not hold up to lots of handling, such as toting back and forth to quilting class. These mats can chip and crack with changes in temperature.

Self-healing mats are great for quilters because their three layers help cushion and protect the rotary blade without leaving permanent grooves in the mat. These mats often have a different color on each side to help you see your fabrics more clearly. Self-healing mats are the most expensive mats, but also add some big benefits. Each type of mat has a place in quilting studios; choose a mat based on your quilting style and space.

Saturday, May 22, 2010

Cutting Fabric

You Can Avoid the "Bends" when Cutting Your Fabric Cross-grain

Rotary cutters have greatly improved the speed at which we can complete our quilt tops. However, in our haste we sometimes end up with long fabric strips that have a bend or unusual sharp point at the midpoint. To avoid this mishap, you must take the time to fold your fabric correctly before wielding your rotary cutter.

Press your fabric to remove the influence of the bolt fold, and then fold it so that the selvages are together. Then pick up the selvages in both hands and slide the selvages from side to side along each other until the fabric's fold is flat. Lay the fabric back down on your work surface and fold the fabric in half again, bringing the fold to the selvage edges so that they line up.

Now you have one edge that is a fold and two selvage edges. Those must all align with each other. When you are confident that the edges are straight, align your rotary cutting ruler with the fold of the fabric, and slice away!

Tuesday, May 4, 2010

Quilt Backing

The seam direction of your backing depends on the quilt's use.

If you are lucky enough to have a well-stocked quilt shop near you, you may be able to purchase wide quilt backing fabric and avoid having seams altogether. However, not all wide backings maintain the same quality. Check carefully before investing in this fabric. Pay special attention to "white on white" backing fabric where part of the design appears to be painted on to the fabric. Longarm needles will perforate and crumble the paint, causing tension issues, more thread breakage, and needle holes that may not recover.

When you are forced to piece fabric strips to create backing large enough for your quilt top, choose the seam direction based on the quilt's use in addition to ease of loading on your frame. Generally, horizontal backing seams are much easier to handle than vertical seams, since the seam will lay parallel to the roller instead of creating bulk as it wraps around the roller.

However, if the quilt will hang on a wall, then situating the backing fabric so that the lengthwise grain runs "top to bottom" will reduce stress on the quilt and prevent sagging and stretching. In this instance vertical seams may be more appropriate.

When you sew backing pieces together, be sure to remove the selvage edges along the seam line. You can decrease the bulk in the seam even further by pressing the seam open instead of to one side. Select a stitch length of 11-12 stitches per inch to secure the open seam better.

Sunday, April 25, 2010

Quilt Fabric Tips

As much as quilters love buying new fabric, it's amazing how difficult it can be to actually bring ourselves to make the first cut into that beautiful yard of material!

If you are reluctant to get out the scissors to create audition pieces for your quilt, try making photocopies instead. You can do this by scanning the fabric into your computer with a flatbed scanner, or by using an all-in-one printer/copier attached to your computer.

If you don't have either of these devices, make the copies at your local office supply store or copy center.

First make several color copies of your fabric choices, and then make a few black and white copies as well. Cut apart the photocopies into your patches for your blocks and audition each one without endangering your actual fabric stash!

Once you have chosen fabrics that work well in your design, substitute the black and white photocopies for your patches. Since the color doesn't distract you in these copies, you can determine if the value and contrast in each fabric is correct, along with the scale and proportion of the prints.

Photocopies cost just a few pennies and are easily reproduced...but slicing into your fabric prematurely can be costly and traumatic!

Wednesday, April 14, 2010

Rotary Cutters

Rotary cutter blades are actually supposed to rotate! Many quilters mistakenly believe that the rotary cutter should perform like a knife, sawing through the fabric layers. However, a rotary cutter blade should turn freely, just like a pizza cutter.

If you have your locking screw set so tightly that the rotary cutter blade does not move, your blade and cutting mat will wear out prematurely, and you'll fatigue much more quickly as you try to "bear down" to cut through multiple fabric layers with a fixed blade. While you're at it, give your rotary cutter a little TLC and you'll reap the rewards of clean, crisp cuts.

Carefully disassemble your cutter, laying the pieces in sequential order on your table so that you can easily put it back together. If you're nervous about being able to reassemble it, put your digital camera to good use and snap photographs at each stage of disassembly to help guide you later.

Wipe lint buildup from behind the cutting blade. Next add one small drop of sewing machine oil (you may use the oil that came with your longarm) on the plastic surface that sits next to your blade. This small amount of lubrication prevents rust and keeps the blade spinning smoothly.

Reassemble the cutter, keeping in mind that the nut holding the blade should be loose enough that the blade rotates as you slice your fabric. If your cleaning and readjustment don't greatly improve your cutter's performance, it may be time for a new blade!