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Date: Mon, 30 Apr 2001 13:41:21 +1000
To: techdiver@aquanaut.com
From: Simon L Hartley <shartley@sc*.ed*.au*>
Subject: Re:Source
I made my own harness too.  FWIW I bought the webbing from a local supplier
(regular weight belt webbing, don't know what the difference is).  The
webbing for my crotch strap I salvaged off an old BC, chose this because it
was stiffer.  I use 2 inch webbing.  If you want to see how I attached it
to my backplate (I have one of the OMS BP's with the 1 inch slot (I think
this was the only alum plate I could get at the time)) here is an image and
explanation...

http://wwwdev.scu.edu.au/schools/rsm/staff/pages/shartley/projects/gear/stra
p.jpg

Using the 2 inch webbing, plastic weight retainer (or stainless if you can
find one that fits two thickness' of webbing), stainless d-ring and
aluminium backplate with 1 inch crotch strap slot.  

1) I start by passing the webbing through the weight retainer once (I put
the d-ring on at the same time so the webbing goes through one side of the
weight retainer, through the d-ring and back through the other side of the
weight retainer), 

2) I then pass the webbing through the slot in the backplate (the slot on
mine is only 1 inch so I folded each edge of the webbing in and fed it
through the slot).  BTW I have the loose tongue of the webbing to the
inside so the webbing goes in through the back of the back plate,

3) I then pass the webbing back through the weight retainer (and d-ring)
ending up with a few inches overhang.  This in itself is probably strong
enough however I bolt the webbing too for extra strength (I often lift my
gear onto a boat by the crotch strap or hang the wings/harness by the
crotch strap to dry),

4) Drill a hole through the webbing below the weight retainer (opposite
side to backplate, obviously the hole goes through both thickness' of
webbing),

5) Melt the webbing around the hole with a flame or soldering iron to seal
the thread around the hole,

6) I put a stainless washer on each side of the hole to further protect the
webbing and run a stainless bolt with self locking nut through the hole and
tighten (so far I've managed to get the holes exactly the right size so the
bolt screws tight through the hole, probably not important),

7) Cut the extra length of bolt of and smooth with a metal file and sand
paper to remove sharp edges (Note: Stainless steel work hardens so cut
quickly and forcefully (obviously not so forcefully you break the blade of
your hack saw though)), 

8) Finally I use electrical tape to secure any loose webbing (wrapped
around the crotch strap).  

Hope this helps.

Simon

Simon L Hartley
RSM Website Coordinator\First Year Course Coordinator
Associate Lecturer
School of Environmental Science and Management
Southern Cross University
P.O. Box 157
Lismore NSW, Australia 2480
Ph: (02) 66203251 or (61 66) 203 251
Fax:(02) 66212669
E-mail: shartley@sc*.ed*.au*

http://www.scu.edu.au/schools/esm/staff/pages/shartley/

http://www.scu.edu.au/schools/esm/
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