Repairing Naim Aro Anti-skate Thread/Weight

It occurs to me it might be easier to just use a weight of the kind that is used for fishing (which, presumably, are designed to be attached to fishing line).  Something like this.  My scale says the Aro weight is 1.67 grams so the 1.83 gram sinker weight would get pretty close.  But maybe it needs to be closer than "pretty close"?

My nylon thread broke last year. I went to the local Hobby Lobby (arts and crafts) store and bought a spool of the thinnest nylon thread they sell. That was the easy part. Getting the length right and tying the knots took some trial and error, but I eventually got it sorted out and the Aro is working just fine.

I repaired mine last year

You need the lightest fishing line your local takle shop sells ...or look on the bay ...some very light ones from China ..but you obviously have to wait for arrival

Then the bottom is just looped round and a tiny blob of two part araldite glue is put on the two treads to hold them together (as was done originally) to stop it coming back through the hole.

If you look closely at the original spot of yellowing stuff on the nylon cord ..or crush it to see what it's made of as I did...you will find it is araldite glue

I was very doubtful that this glue would stick to nylon...and also that I could make a small enough blob to just hold the parts together..but with a little trial and error using a needle tip to "blob" the mixed resin ..it was easy ...the hard bit was stopping the threads from moving while the glue dried!!!

I made a small jig to clamp them in a "crossed over" position and then glued them in place and then cut off the excess length

Being a bit OTT that I am ...I tried breaking the joints several times to test the strength of it .... enough to say araldite holds nylon plenty strong enough for the job..

Hope that long winded story helps a fellow Aro owner

Gammaboy posted:

My nylon thread broke last year. I went to the local Hobby Lobby (arts and crafts) store and bought a spool of the thinnest nylon thread they sell. That was the easy part. Getting the length right and tying the knots took some trial and error, but I eventually got it sorted out and the Aro is working just fine.

The nylon line came off the bias weight of my Alphason arm and so I thought "that should be an easy fix - a bit of fishing line out of my fishing bag, I'll be a few minutes, tops".  Over an hour later, attempt number six was deemed just about good enough.  As you say, getting the length right was by far the trickiest bit, as it depends so much on getting the loop knot in just the right place and the loop being just the right size.

Fishing line, especially monofilament can be problematic for knot tying. It's very slippery and not exacting when the knot is tightened. Plus it takes a lot of pressure to truly secure the knot. I'd opt for a braided nylon sewing thread, which will hold a knot easier, or go with Japtimscarlet's glue solution.

Fishing line is fine, just don't go for the 10lb test!  I used some old leader line - probably 1lb test at most.  With fishing line, secure knots are no problem - it wouldn't be much good if you couldn't make really secure knots - and once you have the knot in place, applying pressure is not a problem. Oh and actually its slipperiness can be an advantage, not just because you want very low friction, but because it gives you some leeway in moving the knot loop up or down the line, but finding the exit right spot just takes a bit of practice (see my post above).  Once you figure it out and have the knack then you could go on and make lots of similar looped threads very consistently, I reckon (I didn't, so this is just a guess).

Perhaps I miss understood the original question

I thought it was the weight he was trying to put back on..the hole in the weight is over 1mm in diameter ..you would need a lot of knots to stop that slipping thought!!

Naim used a small blob of resin original...and that's what I used ...with success...on my replacement

 

Japtimscarlet posted:

Perhaps I miss understood the original question

I thought it was the weight he was trying to put back on..the hole in the weight is over 1mm in diameter ..you would need a lot of knots to stop that slipping thought!!

Naim used a small blob of resin original...and that's what I used ...with success...on my replacement

 

That was one of my questions. So epoxy resin?  (Maybe that's the only kind of resin, I don't know.)  It looks to me that Naim might have put a blob of something--resin, I suppose--on the knot on the loop end too?

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