Knotting a wound synthetic core string is possible but tricky. I only have done that at the peg end yet and needed several tries until I found a way so that the string doesn’t slip and the string doesn’t break at the knot.
Unfortunately I have no time during the next days to explain it well.
I try it now by text only, but it might be hard to understand if you don’t understand which knot I mean.
It works with a high friction over the silk wound part of the string. I use a braided nylon line, 1.5 to 2 mm diameter. I make a double knot (two turns instead of one) and let the string run through the middle of it. The knot needs to be fastened with pliers to get the highest friction. Unfortunately one knot didn’t work, a triple one could not be fastened tight enough, so I used a second double knot a few cm away that needed to be fastened with pliers again (use the end of the line of the first knot). That worked for me.
Do not use a sharp bending of the string as part of a normal knot, the string will break there.
Leave some string behind the second knot (the one closer to the string end) in case the knot may slip a bit initially.
You may need to try several times. The high friction is the key to success. If you cannot tighten the knot fast enough, fight someone else with a bit more strength. But do not cut into the nylon line with the pliers, specially at the end extending your string.
For the tailpiece end you can either use the Velvet Compas 180 mounting method (there have been drawing of it on the web), mount a metal bar/rod at the end or use the free end to make the same kind of knots at the string again. I would leave enough space between the first knots to make one of the other end in between. Then you can either loop around a bar/rod or use the loop to fiddle the string through it.
Good luck.
Unfortunately I have no time during the next days to explain it well.
I try it now by text only, but it might be hard to understand if you don’t understand which knot I mean.
It works with a high friction over the silk wound part of the string. I use a braided nylon line, 1.5 to 2 mm diameter. I make a double knot (two turns instead of one) and let the string run through the middle of it. The knot needs to be fastened with pliers to get the highest friction. Unfortunately one knot didn’t work, a triple one could not be fastened tight enough, so I used a second double knot a few cm away that needed to be fastened with pliers again (use the end of the line of the first knot). That worked for me.
Do not use a sharp bending of the string as part of a normal knot, the string will break there.
Leave some string behind the second knot (the one closer to the string end) in case the knot may slip a bit initially.
You may need to try several times. The high friction is the key to success. If you cannot tighten the knot fast enough, fight someone else with a bit more strength. But do not cut into the nylon line with the pliers, specially at the end extending your string.
For the tailpiece end you can either use the Velvet Compas 180 mounting method (there have been drawing of it on the web), mount a metal bar/rod at the end or use the free end to make the same kind of knots at the string again. I would leave enough space between the first knots to make one of the other end in between. Then you can either loop around a bar/rod or use the loop to fiddle the string through it.
Good luck.
