Re: [bolger] Re: Have any of you considered using UHMW Bottom Protection?
It is also used for rails which snow machine tracks run on, eliminating
the wheels which the original models had.
Works very well for dog sled runners also, I used to use countersunk
screws to hold them to the wooden under runners.
HJ
announcer97624 wrote:
the wheels which the original models had.
Works very well for dog sled runners also, I used to use countersunk
screws to hold them to the wooden under runners.
HJ
announcer97624 wrote:
>
> yes slippery is how you describe UHMW. I have only used screws on
> the bottom into wood and I have seen it fastened to aluminum with
> machine screws and tapped holes in the hull. A friend told me a
> company has perfected a glue for it but I personally have not seen
> it. I do know that if I leave my drift boat on the launch ramp
> resting on the UHMW bottom if there is even a slight incline it will
> self launch. It is used in saw mills to keep chains and such from
> wearing through metal.
>
>
Paul,
The last I bought in a 4'X10' sheet of 3/8's of the brown color was
$38.50 but that was two years ago. You can go thicker or thinner and
the cost will vary correspondingly. We are talking about a "lifetime"
bottom treatment, the extra cost can be considered in longevity.
The last I bought in a 4'X10' sheet of 3/8's of the brown color was
$38.50 but that was two years ago. You can go thicker or thinner and
the cost will vary correspondingly. We are talking about a "lifetime"
bottom treatment, the extra cost can be considered in longevity.
OK, this stuff sounds amazing - but what does it cost?
Paul
Paul
> FWIW, it can be welded to itself, so once you fasten a layer orpiece
> on, you can use a UHMW welder (fancy heat gun) to build up moreYou could bed the UHMW in 3m 5200/5300 or Sikaflex for a water tight
> layers.
>
> Dick
>
joint and counter sink screws. You can fill the countersinks with
UHMW bungs with the welding kit.
I was just thinking of using UHMW tubbing for a rudder
bearing.
I came accross this in my travels:
http://www.crownplastics.com/
They specialize in gluable UHMW sheet stock and
adhesive.
--- dickpilz <dickpilz@...> wrote:
<HR>
<html><body>
<tt>
It is actually easier to glue "non-stick"
Teflon (tm) (PTFE) than to <BR>
glue UHMW. (And that method requires chemical or
electric etching <BR>
under a controlled atmosphere!) Mechanical fastening
is the only way <BR>
to go.
______________________________________________________________________
Find, Connect, Date!http://personals.yahoo.ca
bearing.
I came accross this in my travels:
http://www.crownplastics.com/
They specialize in gluable UHMW sheet stock and
adhesive.
--- dickpilz <dickpilz@...> wrote:
<HR>
<html><body>
<tt>
It is actually easier to glue "non-stick"
Teflon (tm) (PTFE) than to <BR>
glue UHMW. (And that method requires chemical or
electric etching <BR>
under a controlled atmosphere!) Mechanical fastening
is the only way <BR>
to go.
______________________________________________________________________
Find, Connect, Date!http://personals.yahoo.ca
It is actually easier to glue "non-stick" Teflon (tm) (PTFE) than to
glue UHMW. (And that method requires chemical or electric etching
under a controlled atmosphere!) Mechanical fastening is the only way
to go. You might consider countersunk cleats or channels to clip in
the UHMW.
FWIW, it can be welded to itself, so once you fasten a layer or piece
on, you can use a UHMW welder (fancy heat gun) to build up more
layers.
Dick
glue UHMW. (And that method requires chemical or electric etching
under a controlled atmosphere!) Mechanical fastening is the only way
to go. You might consider countersunk cleats or channels to clip in
the UHMW.
FWIW, it can be welded to itself, so once you fasten a layer or piece
on, you can use a UHMW welder (fancy heat gun) to build up more
layers.
Dick
--- In bolger@y..., "announcer97624" <cupp@k...> wrote:
> yes slippery is how you describe UHMW. I have only used screws on
> the bottom into wood and I have seen it fastened to aluminum with
> machine screws and tapped holes in the hull. A friend told me a
> company has perfected a glue for it but I personally have not seen
> it. I do know that if I leave my drift boat on the launch ramp
> resting on the UHMW bottom if there is even a slight incline it
will
> self launch. It is used in saw mills to keep chains and such from
> wearing through metal.
yes slippery is how you describe UHMW. I have only used screws on
the bottom into wood and I have seen it fastened to aluminum with
machine screws and tapped holes in the hull. A friend told me a
company has perfected a glue for it but I personally have not seen
it. I do know that if I leave my drift boat on the launch ramp
resting on the UHMW bottom if there is even a slight incline it will
self launch. It is used in saw mills to keep chains and such from
wearing through metal.
the bottom into wood and I have seen it fastened to aluminum with
machine screws and tapped holes in the hull. A friend told me a
company has perfected a glue for it but I personally have not seen
it. I do know that if I leave my drift boat on the launch ramp
resting on the UHMW bottom if there is even a slight incline it will
self launch. It is used in saw mills to keep chains and such from
wearing through metal.
--- In bolger@y..., "announcer97624" <cupp@k...> wrote:
tending towards the use of 1/4" steel plate for bottom protection.
Recently in the Martha Jane and AS29 updates for instance [w/dual use
as ballast]. SA mentioned the possible use on Dakota too, (I
recall). Those plates fasten with countersunk screws.
How can you fasten UHMW plastic sheet to wood? It seems too slippery
to glue. Screw it? :)
> I swear by the stuff for bottom protection on wood boatsDoes anybody know PB&F's opinion(s) of the stuff? They seem to be
tending towards the use of 1/4" steel plate for bottom protection.
Recently in the Martha Jane and AS29 updates for instance [w/dual use
as ballast]. SA mentioned the possible use on Dakota too, (I
recall). Those plates fasten with countersunk screws.
How can you fasten UHMW plastic sheet to wood? It seems too slippery
to glue. Screw it? :)
Is all this to say that nothing will grow on it? Moss, coral, or any of the
other nasties in water?
Neat! How thick should it be?
Jeff
other nasties in water?
Neat! How thick should it be?
Jeff
I swear by the stuff for bottom protection on wood boats and I have
used it to also launch large steel 100 ton barges with the UHMW for
bearing blocks. My drift boats have hit sharp rocks and even metal
hazards with no bad effects. I call it the thousand year bottom job.
UHMW has the highest abrasion resistance of any thermoplastic with a
coefficient of friction of 0.14 it is twenty times more wear
resistant than steel. UHMW possesses a unique combination of physical
and mechanical properties which enable it to perform well under the
most rigorous conditions of wear and environment. It has the highest
known impact strength of any thermoplastic presently made, plus high
resistance to abrasion against a wide variety of metals. These
properties make UHMW an exceptional material for industrial impact,
wear and sliding operations. As a boat bottom covering materiel your
boat will be impervious to rocks, glass, metal cement or underwater
growths!
John
used it to also launch large steel 100 ton barges with the UHMW for
bearing blocks. My drift boats have hit sharp rocks and even metal
hazards with no bad effects. I call it the thousand year bottom job.
UHMW has the highest abrasion resistance of any thermoplastic with a
coefficient of friction of 0.14 it is twenty times more wear
resistant than steel. UHMW possesses a unique combination of physical
and mechanical properties which enable it to perform well under the
most rigorous conditions of wear and environment. It has the highest
known impact strength of any thermoplastic presently made, plus high
resistance to abrasion against a wide variety of metals. These
properties make UHMW an exceptional material for industrial impact,
wear and sliding operations. As a boat bottom covering materiel your
boat will be impervious to rocks, glass, metal cement or underwater
growths!
John