PR600 Modification for Tangle-Free Stitching
Problem: Embroidery threads -- especially metallic threads -- can be very curly and prone to tangling when they come off the cones. On the PR600 this tangling problem occurs especially during the traverse from the second thread guide to the third.
The threads spiral around and can get twisted together, stopping the machine and causing a mess of tangles to be cleared up.
On all the PR600 models, the thread is passed through hollow plastic protrusions or "nipples" (circled in picture) at both the second and the third thread guides.
These protrusions are just the right size for 1/4" diameter plastic tubing, which can be bought by the foot at any hardware store.
This simple modification takes only a few minutes and approximately 5 feet of tubing.
To make this change to your machine, cut the tubing into six 10" lengths. It can be "friction fit" in place by simply pushing the ends of the tube onto the plastic nipples.
CAUTION: DO NOT GLUE THE TUBING IN PLACE. It will stay in position without any fasteners, and you need to be able to remove it for threading.
To thread the tubing, I use a heavy needle. Detach the tubing from the machine at both ends. Thread the machine as usual until you reach the second thread guide. Pass the thread through the nipple at the second thread guide and then through the eye of the heavy needle. Drop the needle through the tubing, pulling the thread through with it. Remove the needle and pass the thread through the plastic nipple in the next thread guide. Carefully re-attach the ends of the tubing to the nipple protrusions, taking care not to catch the thread as you do so. Continue threading the machine in the usual way, repeating for all six tubes.
To re-thread the machine with a different colour, I usually tie the new colour to the cut end of the previous colour and pull the thread through all the thread guides, including the tubing. There's no need to remove the tubing to do this.
In the seven years since I modified my machine in this way I have had no more thread tangles, and have had to detach the tubing only three or four times.