The following is not the preferred method, but should the situation arise, this
technique could be utilized as a temporary method!
Attachment of Lanyard Handle Star Nut:
The Star Nut needs to be laminated into the socket. Depending on the nut supplied,
the hole should be burnished through, and then:
If the Star Nut is not threaded, drill out with 3.3mm drill bit and tap with 4mm tap.
If the Star Nut is threaded, chase threaded nut to clean thread with 4mm tap.
If for some reason, the Star Nut is not laminated into the socket, a relief can be
sanded into the interior of the socket so that the Star Nut sits completely into the
relief and does not protrude into the socket – The location and amount the Star
Nut needs to be flush is to be determined by the Prosthetist.
Drill a corresponding hole the same size as the star nut hole into the determined
location that the Lanyard Handle will be.
After relief is achieved, the Star Nut can be Bonded into position with Acrylic
Sealing Resin with fiber filler, or Urethane Adhesive.
The Star Nut will need to be completely covered over, and the bonded area can
be covered with Masking Tape till the bond is totally cured.
Once cured, the hole should be burnished and chased with a tap, or drilled and
tapped – PLEASE REFER TO Attachment of Lanyard Handle Star Nut.
Once the location is set, drill a
corresponding hole the same size as
the Star Nut.
Sand down the inside of the socket
enough to have the Star Nut lay flush
with the socket surface.
You can locate the Star Nut with a
copper rivet that has petroleum jelly on
the tip and inserted through the hole
and the Star Nut placed onto it.
This will aid in locating the Star Nut
when bonding it in place – Be sure to
cover the nut entirely with enough to
have a flush inner surface!