Saturday, April 28, 2012

Machine Issues VS Design Problems

Embroidery problems are a pain in the…. BUT, learning to diagnose whether the problem is with the machine or the design will take you a long way past the frustration.

We’ve all been there; you just want to get the job finished and out the door and move on to the next one waiting, deadlines and all. That, of course, is when the gremlins visit and slow down the whole bit. Being able to discern where the problem is gets you quickly back into production.

Let’s start with registration problems. We can determine whether the problem is machine or design as long as we’ve taken care of a few pre-production things:

Hooping: On flats, always check that the design is hooped properly, meaning using the correct stabilizer and insuring that it is completely captured in the hoop all the way around and the fabric is taut but not stretched. Some cases may require an extra piece of backing and that can be tested quickly by adding it on the next run to see if it makes a difference.

On hats: registration is even a touchier point and some hat frames will fight you to be able to get the hat tight in the frame and it may take a few clips on the frame to help hold the hat. Always use your needle plate designed specially for hats to limit the amount of flagging under the needle.

Once you’ve assured these initial steps, the problem is either the design itself or the machine.

Design:  Digitizing issues will be fairly consistent. If the design doesn’t line up, say a border around a fill, by just a bit, it’s probably the design and it just needs to be adjusted. If it is way, WAY off, check your hooping. Designs are created with compensation for the fabric push and pull in mind. If the fabric is moving way more than the digitizer expected, the result will be poor. (This is why we ask what type of fabric the design will be used for) For hats, the design needs to be digitized specifically for hat application and should sew center out and bottom up. Without the proper pathing, a design may bubble or ripple against the center seam and cause puckering.

Machine:  Check the frame arms to be sure they’re tight and that the hoop arms are seated tightly in the frame. Cap frame bands should be tight across the hat with no movement possible once the frame is clasped shut. Assure that the pantograph is moving freely and not catching or bumping anything while sewing. Distortion such as a line of text that “smiles” or “frowns” means the hat is moving and pulling in when sewn.

Thread breakage is the other usual obvious problem. These are a bit easier to diagnose. If the thread breaks in the same spot of the design every time, it’s a digitizing problem. There may be stitches that are too close together. If it seems to happen virtually anywhere in the design, you have a machine problem, could be tension issues or needle burs (snapping or fraying). One exception is a “false thread break” where the machine will unthread after a trim. Even though this may happen in the same spot, it’s not the design. It could be the machine’s trimmers are acting up or the tension is way too tight.

Use your deductive reasoning. One thing to think about is if you’ve used this design before successfully, what has changed? If the design sewed well previous, is it a different fabric/application? Different brand of hat? Different weight or brand of thread? If it’s a new design, was it digitized for the fabric/application you are trying to sew? Are you hooping it properly? Checked needles?

Talk to the digitizer and get some input. If it’s a design issue, the best way is to show the digitizer exactly what the design is doing is by scanning the resulting embroidery and let the digitizer see exactly what needs to be edited and by how much. A good digitizer will recheck their design and adjust the stitch file to fix the issues. (There’s that customer service thing again!)

Once you get good at diagnosing problems, you’ll be able to get sewing again much faster with less hair loss!
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NeedleUp Digitizing LLC is owned and operated by Donna Lehmann, a 20yr veteran of the embroidery/digitizing industry. She can be reached at NeedleUp, 303-287-6633 for digitizing, consultation and classes M-F.