"Clark" wrote in message
...
Jim Yanik wrote in news:Xns9932CE8061A20jyanikkuanet@
64.209.0.87:

[snip]

You might try putting a steel plate or thick plywood sheet over the patch
and driving your car or truck(heavier the better) over it to compress the
patch.You'll get more pressure that way.

Just how much pressure do you think a car or truck tire exerts?

1/4 of the vehicles weight?