End Delivery Shuttle tension issue


I've been vexed with this issue and hope someone out there has the knowledge.

I use end delivery shuttles. I have several, fly and hand throwing, all sizes, and through use, have designated many for certain threads, because i know they work well on the both selvedges. Currently, I'm using a small hand shuttle with tension on front and back near the nose.

My question is this:

If the left selvedge is tensioned correctly but the right selvedge is loose, what's the trick to tensioning the right, without messing up or tightening the left?

Does the front tension hole affect one or the other? There must be rhyme or reason to the two and how they affect each edge. I experiment past the point of no return.

I just wove one piece with a certain yarn, and didn't have to tension either side, finished that, and on the same warp, began the 2nd piece, new color, same fiber, and floppy right edge! aghhh.

Thanks for any insight.



Posted on Sat, 07/18/2009 - 13:47

HI Mary.....the answer may be as simple as moving yourself over on the bench.......to the left to correct a right hand selvedge and to the right to correct a left hand selvedge.  Try scooting about 6-8" over to the left and see if your selvedge improves.

Su :-)


Posted on Sat, 07/18/2009 - 14:35

Hi Su,

that's curious - but it works! i was thinking the tension might be adjusted some way, and i'll i had to do was scoot! thanks for answering my problem.


Posted on Sat, 07/18/2009 - 15:04

Oh My!  What a simple slick answer!

Thanks Sue - I have had this problem in the past and when it showed up in the hot topics, I made a bee-line here.

I was going to suggest in the future moving the piece in the loom so that the thread coming out of the shuttle, not the shuttle itself, would be centered to the fabric.  But then I got to the part where it had been working well with a different yarn.


Posted on Sat, 07/18/2009 - 16:43

Hi all you end delivery shuttle people - do you EVER adjust your tension with the allen screw or do you just scoot or move your warp over?



Posted on Sun, 07/19/2009 - 16:30

I always adjust with the tension screw.  I find it makes a HUGE difference in the quality of the weaving; if I don't get the tension precisely right I wind up having selvage problems like the one you're describing.

I'd fiddle around with it until the selvage improves.  Once you get the "feel" of the flow off the shuttle when the tension is right, adjustment becomes quick and easy.

Posted on Sun, 07/19/2009 - 16:44

Hi Tien,

have you figured out if tensioning the front or back makes a difference? let's say i crank on the front, and less on the back, would it make a  tighter right selvedge? i have seriously spent HOURS fiddling with the tension to get it just right. drives me nuts. it's so much easier to scoot! seriously tho, i would like to know whether if there is rhyme or reason to how and when to adjust that tension and what each does, so that i'm not trial and error for hours!



Posted on Mon, 07/20/2009 - 15:36

Hi Mary,

Do you have a back tensioner?  I've never used one!  As far as I know my EFS only have a tensioner in the front.  One direction tightens, the other loosens.

Basically all you want is for the yarn to feed out smoothly, with just a little bit of resistance so that it pulls up with an even edge at the selvedges.  Too loose and you get loops; too tight and you get irregular selvages.  You are right in saying that it is slightly different from one side to another, but I haven't found this to be a problem - of course it might just be that I am working in fine yarns where it is less pronounced.

Hope that helps!