Gammill Vision User Manual
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Contents
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Page 20thread from over-spinning when the machine comes to asudden stop.A bobbin fits easily into the bobbin case, and should spin freely, in a clockwise direction. Thecase has a thin metal tension strip with two screws. The smaller one is holding it on to thecase, and the larger one adjusts the tension – right to tighten and left to loosen. When makingadjustments, turn the screw about 5 -10 minutes of a revolution at a time.Inserting the Bobbin CaseThere is a spring loaded handle on the outside of the bobbincase and part of this sticks out about 1/8”. When inserting thebobbin case, align this bump to the notch in the rotary hookassembly (about 4:00 position). Push in the case and listen forthe click to verify that it is properly inserted.Hint: Use the spring loaded handle to remove the bobbin, butdon’t use it to insert the bobbin because it often prevents the‘click’, which is your assurance that the bobbin case is inproperly.Setting the TensionsThe following text contains concepts that a novice quilter may not know yet, but don’t worry.Tension setting concepts are explained here, and reviewed again in the Techniques Section -which includes exercises on checking the tension. By then you will have learned how to load aquilt and run the machine. The concepts are reviewed again in the Care Section - whichincludes troubleshooting suggestions for poor stitch quality.A good stitch is a balanced stitch. This means little or no thread from one side shows up on theother side. Factors other than tension may make the stitch look imperfect. If the batting is verythin, or the threads are very thick, or the two thread colors are very different it will be almostimpossible to not see the thread from the other side.Start with a thread made specifically for longarm quilting machines. A&E’s PermaCore 30 wtthread is a great choice for the beginning quilter. This has a poly core that gives it strength,and durability. Once you have bonded with your machine you can try other brands / types /weights.Set the Intermittent Tension• The Intermittent Tension Baseline setting is when the adjustment knob is flushwith the inside threaded shaft, so start there.• Intermittent tension adjustments might be needed on every quilt combination you dobecause the thread, fabric, batting and backing all affect the stitch quality. Turn thethumb screw to the right (clockwise) to tighten and the left to loosen. When adjustingthe tension, always turn the intermittent tension knob at least ½ turn at a time. It's acoarse adjustment and less than ½ turn will not appreciably change the tension.• If the tension is too tight, the thread will quickly work its way out of the disks.Rotary hook shaft and notch |
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