In message , GB
writes
On 08/11/2017 18:29, wrote:
I need to capture a half-feral cat with a serious medical problem. I
have a large wire cage that's not designed to be used as a trap. If I
tie string/rope to the open door, pass it through the wire cage and
run it along the ground, it would be possible to wait and pull the
string once the cat enters.. This won't work unless the door closes
and at the same time a knot ties it shut. The knot needn't hold long,
10 seconds against a large strong cat should do the job. Question is,
what knot should I use?
NT



What's wrong with the following?

1. Peg the cage to the ground, so it can't move.

2. Pull the door shut with the string, and then tie the string off,
whilst keeping it taut. Any old knot will do. Or screw a cleat to
something sturdy and wrap the string round that a few times.

You could use a slip knot and take the loop round the door edge and
frame. Still not secure but you have doubled your mechanical
advantage:-)

--
Tim Lamb