Machining Characteristics of Plastics
 

..
"Glenn Ashmore" wrote in message
news:_m8sb.15172$62.3195@lakeread04...

SNIP

Boedeker has a pretty good page on machining plastics
http://www.boedeker.com/fabtip.htm

snip

Once again I'm amazed at the depths of Glenn"s bookmarks. I wonder if it
would be useful for us to make available our bookmarks to each other? Post
them on rbb? Or would that take away all the mystery?


--
Jim Woodward
www.mvFintry.com

Machining Characteristics of Plastics
 

My bookmarks are so disorganized that I wish there was something like
google to search them. I have everything from thermodynamic formulas
for steam engines to how to make springs to the Forest Products Lab
encyclobedia of woods and timber production. From the Billboard top 50
archive to NPR's essential library of classical music.

What was that old Heinlein quote? "A man should be able to change a
diaper, plan an invasion, butcher a hog, sail a ship, design a building,
write a sonnet, balance accounts, build a wall, set a bone, comfort the
dying, take orders, give orders, cooperate, act alone, solve equations,
analyse a problem, pitch manure, program a computer, cook a tasty meal,
fight efficiently and die gallantly. Specialisation is for insects."

I may not be able to do them all but I can find out how somewhere in my
bookmarks. :-)

Jim Woodward wrote:
.
"Glenn Ashmore" wrote in message
news:_m8sb.15172$62.3195@lakeread04...

SNIP

Boedeker has a pretty good page on machining plastics
http://www.boedeker.com/fabtip.htm


snip

Once again I'm amazed at the depths of Glenn"s bookmarks. I wonder if it
would be useful for us to make available our bookmarks to each other? Post
them on rbb? Or would that take away all the mystery?



--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com

Machining Characteristics of Plastics
 

My bookmarks are so disorganized that I wish there was something like
google to search them. I have everything from thermodynamic formulas
for steam engines to how to make springs to the Forest Products Lab
encyclobedia of woods and timber production. From the Billboard top 50
archive to NPR's essential library of classical music.

What was that old Heinlein quote? "A man should be able to change a
diaper, plan an invasion, butcher a hog, sail a ship, design a building,
write a sonnet, balance accounts, build a wall, set a bone, comfort the
dying, take orders, give orders, cooperate, act alone, solve equations,
analyse a problem, pitch manure, program a computer, cook a tasty meal,
fight efficiently and die gallantly. Specialisation is for insects."

I may not be able to do them all but I can find out how somewhere in my
bookmarks. :-)

Jim Woodward wrote:
.
"Glenn Ashmore" wrote in message
news:_m8sb.15172$62.3195@lakeread04...

SNIP

Boedeker has a pretty good page on machining plastics
http://www.boedeker.com/fabtip.htm


snip

Once again I'm amazed at the depths of Glenn"s bookmarks. I wonder if it
would be useful for us to make available our bookmarks to each other? Post
them on rbb? Or would that take away all the mystery?



--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com

Machining Characteristics of Plastics
 

I just want to thank everyone for their insight. Very helpful! Thanks a
lot!

-- Geoff

Machining Characteristics of Plastics
 

I just want to thank everyone for their insight. Very helpful! Thanks a
lot!

-- Geoff

Machining Characteristics of Plastics
 

Understood. Mine are in much the same state and are very revealing.

Tools Organize Favorites in IE6 is a joke -- really hard to use. I just
bookmark the exported form of the bookmarks list -- it's certainly easier to
see than the IE6 tree.

"thermodynamic formulas for steam engines"? Railroad steam?

Although I claim to be able to fix anything that isn't living (a little over
reaching), I draw the line at diapers and bones. Dee is a qualified Ship's
Medical Officer (Maine Maritime Academy) so I leave fixing the living to
her.


--
Jim Woodward
www.mvFintry.com


..
"Glenn Ashmore" wrote in message
news:wFbsb.16555$62.14104@lakeread04...
My bookmarks are so disorganized that I wish there was something like
google to search them. I have everything from thermodynamic formulas
for steam engines to how to make springs to the Forest Products Lab
encyclobedia of woods and timber production. From the Billboard top 50
archive to NPR's essential library of classical music.

What was that old Heinlein quote? "A man should be able to change a
diaper, plan an invasion, butcher a hog, sail a ship, design a building,
write a sonnet, balance accounts, build a wall, set a bone, comfort the
dying, take orders, give orders, cooperate, act alone, solve equations,
analyse a problem, pitch manure, program a computer, cook a tasty meal,
fight efficiently and die gallantly. Specialisation is for insects."

I may not be able to do them all but I can find out how somewhere in my
bookmarks. :-)

Jim Woodward wrote:
.
"Glenn Ashmore" wrote in message
news:_m8sb.15172$62.3195@lakeread04...

SNIP

Boedeker has a pretty good page on machining plastics
http://www.boedeker.com/fabtip.htm


snip

Once again I'm amazed at the depths of Glenn"s bookmarks. I wonder if
it
would be useful for us to make available our bookmarks to each other?
Post
them on rbb? Or would that take away all the mystery?



--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com

Machining Characteristics of Plastics
 

Understood. Mine are in much the same state and are very revealing.

Tools Organize Favorites in IE6 is a joke -- really hard to use. I just
bookmark the exported form of the bookmarks list -- it's certainly easier to
see than the IE6 tree.

"thermodynamic formulas for steam engines"? Railroad steam?

Although I claim to be able to fix anything that isn't living (a little over
reaching), I draw the line at diapers and bones. Dee is a qualified Ship's
Medical Officer (Maine Maritime Academy) so I leave fixing the living to
her.


--
Jim Woodward
www.mvFintry.com


..
"Glenn Ashmore" wrote in message
news:wFbsb.16555$62.14104@lakeread04...
My bookmarks are so disorganized that I wish there was something like
google to search them. I have everything from thermodynamic formulas
for steam engines to how to make springs to the Forest Products Lab
encyclobedia of woods and timber production. From the Billboard top 50
archive to NPR's essential library of classical music.

What was that old Heinlein quote? "A man should be able to change a
diaper, plan an invasion, butcher a hog, sail a ship, design a building,
write a sonnet, balance accounts, build a wall, set a bone, comfort the
dying, take orders, give orders, cooperate, act alone, solve equations,
analyse a problem, pitch manure, program a computer, cook a tasty meal,
fight efficiently and die gallantly. Specialisation is for insects."

I may not be able to do them all but I can find out how somewhere in my
bookmarks. :-)

Jim Woodward wrote:
.
"Glenn Ashmore" wrote in message
news:_m8sb.15172$62.3195@lakeread04...

SNIP

Boedeker has a pretty good page on machining plastics
http://www.boedeker.com/fabtip.htm


snip

Once again I'm amazed at the depths of Glenn"s bookmarks. I wonder if
it
would be useful for us to make available our bookmarks to each other?
Post
them on rbb? Or would that take away all the mystery?



--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com

Machining Characteristics of Plastics
 

What kind of speeds are producing this effect? My KISS doesn't
produce any significant vibration up to 30 kts or so. That is as fast
as I have run it. Have you checked the balance of the blades? A
slight unbalance in the blades might induce a vibration in the
mounting. I chose to use 2" SS tube rather than sched 40 pipe. The
PVC fitting is a snug fit. The KISS came with an assortment of
fittings to fit a number of different kinds of pipe. If the 2" tube fits
the KISS better than the sched 40 pipe, perhaps attaching a short
length of 2" tube to the top of the pipe for mounting would be a
simpler solution.

Doug
s/v Callista

"Geoffrey W. Schultz" wrote in message
. 16...
I have a KISS wind generator that develops vibration at certain wind
speeds. The problem is that there's a PVC fitting that goes over a 2"
stainless schedule 40 support pipe that is loose fitting. I want to
machine one with a sleeve bearing on a lathe and make it out of plastic.
However, I really don't have any experience machining plastic, I've been
looking at www.mscdirect.com under Raw Materials/Plastic Material/Rods for
3" material. To keep costs under control I'm looking at the following:

Nylon
Acetal
UHMW
LDPE
HDPE

Comments on the machining qualities, UV resistance, and overall strength
of
these would be greatly appreciated.

-- Geoff

Machining Characteristics of Plastics
 

What kind of speeds are producing this effect? My KISS doesn't
produce any significant vibration up to 30 kts or so. That is as fast
as I have run it. Have you checked the balance of the blades? A
slight unbalance in the blades might induce a vibration in the
mounting. I chose to use 2" SS tube rather than sched 40 pipe. The
PVC fitting is a snug fit. The KISS came with an assortment of
fittings to fit a number of different kinds of pipe. If the 2" tube fits
the KISS better than the sched 40 pipe, perhaps attaching a short
length of 2" tube to the top of the pipe for mounting would be a
simpler solution.

Doug
s/v Callista

"Geoffrey W. Schultz" wrote in message
. 16...
I have a KISS wind generator that develops vibration at certain wind
speeds. The problem is that there's a PVC fitting that goes over a 2"
stainless schedule 40 support pipe that is loose fitting. I want to
machine one with a sleeve bearing on a lathe and make it out of plastic.
However, I really don't have any experience machining plastic, I've been
looking at www.mscdirect.com under Raw Materials/Plastic Material/Rods for
3" material. To keep costs under control I'm looking at the following:

Nylon
Acetal
UHMW
LDPE
HDPE

Comments on the machining qualities, UV resistance, and overall strength
of
these would be greatly appreciated.

-- Geoff

Machining Characteristics of Plastics
 

Go over to rec.crafts.metalworking and post your question there. While the
group is nominally about metalworking, the machinists there know a lot about
the machining characteristics of various materials like the plastics.

Tom Dacon

"Geoffrey W. Schultz" wrote in message
. 16...
I have a KISS wind generator that develops vibration at certain wind
speeds. The problem is that there's a PVC fitting that goes over a 2"
stainless schedule 40 support pipe that is loose fitting. I want to
machine one with a sleeve bearing on a lathe and make it out of plastic.
However, I really don't have any experience machining plastic, I've been
looking at www.mscdirect.com under Raw Materials/Plastic Material/Rods for
3" material. To keep costs under control I'm looking at the following:

Nylon
Acetal
UHMW
LDPE
HDPE

Comments on the machining qualities, UV resistance, and overall strength
of
these would be greatly appreciated.

-- Geoff