Tips for casting PU mastwedges

Posted by michel.capel (michel.capel@…>)

All,

Next week (hopefully) the masts of my F44 can be put back in place. I
have to make new mastwedges. I bought a liberal quantity of PU-resin
in durometer Shore A80 and a kilo of plasticine to make a mold.

My question:
How do I keep the masts steady in the middle of the mast partner hole
while the resin is curing to a hard rubber ring? Remember we have no
standing rigging on these boats! :^{

All ideas welcome!


Michel Capel

F44#4 Alabama Queen

Posted by lance_ryley (lance_ryley@…>)

could you make wooden braces that went from the gunnel to the mast.
At the mast wrap some line around the tops to steady them… and do it
on a really light-wind day? On Bright Star, I’ve got two halyards on
the main mast that could also be used to help steady the position…

…just a thought.

Lance

— In freedomyachts2003@yahoogroups.com, “michel.capel”
<michel.capel@…> wrote:

All,

Next week (hopefully) the masts of my F44 can be put back in place.
I
have to make new mastwedges. I bought a liberal quantity of PU-
resin
in durometer Shore A80 and a kilo of plasticine to make a mold.

My question:
How do I keep the masts steady in the middle of the mast partner
hole
while the resin is curing to a hard rubber ring? Remember we have
no
standing rigging on these boats! :^{

All ideas welcome!

Michel Capel

F44#4 Alabama Queen

Posted by michel.capel (michel.capel@…>)

Lance, I’m definitely using the halyards to steady the masts, but
there is not much distance away from the mast around the mainmast.
For the mizzen, I think I can setup 4 lines spaced enough to keep
the mizzen steady.

I was thinking about sawing two disks of thick plywood. diameter
large enough to cover the bolt holes around the mast. Then saw out
holes in the disks so they just fit around the mast. Next push these
wooden rings over the mast base after the mast has entered the deck
hole. Then temporarily fix the mast with wedges in the mast partner
and drill and bolt the wooden disks to the underside of the deck.
Remove the wedges and smear model clay on the top of the ring to
pour the liquid PU resin on.

How does this sound?

— In freedomyachts2003@yahoogroups.com, “lance_ryley”
<lance_ryley@…> wrote:

could you make wooden braces that went from the gunnel to the
mast.
At the mast wrap some line around the tops to steady them… and do
it
on a really light-wind day? On Bright Star, I’ve got two halyards
on
the main mast that could also be used to help steady the position…

…just a thought.

Lance

— In freedomyachts2003@yahoogroups.com, “michel.capel”
<michel.capel@> wrote:

All,

Next week (hopefully) the masts of my F44 can be put back in
place.
I
have to make new mastwedges. I bought a liberal quantity of PU-
resin
in durometer Shore A80 and a kilo of plasticine to make a mold.

My question:
How do I keep the masts steady in the middle of the mast partner
hole
while the resin is curing to a hard rubber ring? Remember we
have
no
standing rigging on these boats! :^{

All ideas welcome!

Michel Capel

F44#4 Alabama Queen