Re: Thoughts on I60 spar construction.
--- In bolger@y..., wmrpage@a... wrote:
only the first part is in the hyperlink. Do a search at Google
for "packers knot" and it will probably find it too.
A packers knot is pretty simple, I think I can describe it.
Start with the loose end from a ball of string. Wrap it around what
you want to tie until it comes back to the string near the ball.
Make a figure eight knot that loops around the string near the ball.
Pull the ball of string so your knot cinches around the object being
tied. To lock, throw a half hitch around the standing end of string
at the figure eight.
> >http://members.fortunecity.co.uk/paulakala/packersknot.jpgHmm, works for me, could be that the whole "long" URL is wrapping and
> Tried the link, bruce, but didn't find a knot diagram, if that was
> Bill in MN
only the first part is in the hyperlink. Do a search at Google
for "packers knot" and it will probably find it too.
A packers knot is pretty simple, I think I can describe it.
Start with the loose end from a ball of string. Wrap it around what
you want to tie until it comes back to the string near the ball.
Make a figure eight knot that loops around the string near the ball.
Pull the ball of string so your knot cinches around the object being
tied. To lock, throw a half hitch around the standing end of string
at the figure eight.
In a message dated 4/8/02 11:33:47 AM Central Daylight Time,
brucehallman@...writes:
intended.
Bill in MN
[Non-text portions of this message have been removed]
brucehallman@...writes:
>http://members.fortunecity.co.uk/paulakala/packersknot.jpgTried the link, bruce, but didn't find a knot diagram, if that was what was
>
intended.
Bill in MN
[Non-text portions of this message have been removed]
Two things crossed my mind while thinking how to build the big spars
for the I60...
1) Round vs. Octagonal: There is no good reason I can think of that
the spars have to be fully rounded. The octagonal shape of
a 'birdsmouth' constructed spar should be as strong as, perhaps
stronger, than a rounded octagonal shape. Less labor intensive too.
2) Clamping: For a long time now I have used a packers knot as a
sort of "poor man's" clamping device, especially when edge joining
boards. This could be used every foot or so, during the glue-up of
the spars. You tie it with string (I prefer braided twine)...
http://members.fortunecity.co.uk/paulakala/packersknot.jpg
...and it has several advantages.
a) It can be tied one handed.
b) It cinches very tight if you want.
c) Throw a half hitch around the standing end and it locks.
d) It is cheap, and plentyful [unlike clamps].
e) It is 'one ended', IOW you can tie it from a spool of string and
need to cut it to length only after the knot is tied and the length
is determined. No waste.
f) No limit on the size, and little limit on the shape of the thing
being clamped.
disadvantages...
a) cannot be untied easily.
b) doesn't work as well in rope.
c) can mar soft wood where it passes over hard edge.
The name of the knot comes from it's use by storekeepers to tie up
packages, pulling the standing end from a spool of twine.
for the I60...
1) Round vs. Octagonal: There is no good reason I can think of that
the spars have to be fully rounded. The octagonal shape of
a 'birdsmouth' constructed spar should be as strong as, perhaps
stronger, than a rounded octagonal shape. Less labor intensive too.
2) Clamping: For a long time now I have used a packers knot as a
sort of "poor man's" clamping device, especially when edge joining
boards. This could be used every foot or so, during the glue-up of
the spars. You tie it with string (I prefer braided twine)...
http://members.fortunecity.co.uk/paulakala/packersknot.jpg
...and it has several advantages.
a) It can be tied one handed.
b) It cinches very tight if you want.
c) Throw a half hitch around the standing end and it locks.
d) It is cheap, and plentyful [unlike clamps].
e) It is 'one ended', IOW you can tie it from a spool of string and
need to cut it to length only after the knot is tied and the length
is determined. No waste.
f) No limit on the size, and little limit on the shape of the thing
being clamped.
disadvantages...
a) cannot be untied easily.
b) doesn't work as well in rope.
c) can mar soft wood where it passes over hard edge.
The name of the knot comes from it's use by storekeepers to tie up
packages, pulling the standing end from a spool of twine.