Today's Message Index:
----------------------
1. 12:38 AM - Re: saving hands and fingers on the table saw (Clif Dawson)
2. 04:52 AM - Oscar's Pietenpol Presentation (Cuy, Michael D. (GRC-RXD0)[ASRC])
3. 05:56 AM - Re: saving hands and fingers on the table saw (amsafetyc@aol.com)
4. 06:25 AM - saws (Cuy, Michael D. (GRC-RXD0)[ASRC])
5. 07:10 AM - Re: Steamin' Curious (Bill Church)
6. 07:38 AM - Re: Steamin' Curious (HelsperSew@aol.com)
7. 08:21 AM - Re: saws (Bill Church)
8. 08:32 AM - Re: Steamin' Curious (Bill Church)
9. 09:00 AM - Re: Steamin' Curious (amsafetyc@aol.com)
10. 09:25 AM - Re: Steamin' Curious (Bill Church)
11. 10:58 AM - Re: saws (Glenn W. Thomas)
12. 11:55 AM - push sticks (Cuy, Michael D. (GRC-RXD0)[ASRC])
13. 11:59 AM - Re: saws (del magsam)
14. 01:21 PM - Re: saws (Bill Church)
15. 02:17 PM - Re: Fly-In in Central Florida... seeking Piets & other interesting airplanes (Eric Williams)
16. 03:52 PM - Re: saws (MICHAEL SILVIUS)
17. 04:16 PM - Re: saws (MICHAEL SILVIUS)
18. 04:29 PM - Re: Fly-In in Central Florida... seeking Piets & other interesting airplanes (Ben Charvet)
Message 1
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Subject: | Re: saving hands and fingers on the table saw |
Why pay for something you already have?
It's a wonderful piece of natural technology
called "Situational Awareness".
To paraphrase, it's "Where the Eye Meets the Blade."
Like any fine tool it benefits from sharpening.
Clif
----- Original Message -----
From: GlennThomas@flyingwood.com
To: pietenpol-list@matronics.com
Sent: Monday, January 22, 2007 7:17 PM
Subject: Re: Pietenpol-List: saving hands and fingers on the table saw
Hmmm,
I wonder if this technology could be adapted to my circa 1950 Cast
Iron Craftsman table saw.
Glenn W. Thomas
Storrs, CT
http://www.flyingwood.com
Message 2
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Subject: | Oscar's Pietenpol Presentation |
Oscar-- if your crowd has a decent sense of humor perhaps you could show
them this highly modified Pietenpol Biplane
doing a smoke job on takeoff from what appears to be a ramp/hangar area.
Mike C.
do not archive
Message 3
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Subject: | Re: saving hands and fingers on the table saw |
As the consummate safety director that I am, I have contacted them to ask th
e same question. A retro fit for all saws would save tons of injuries, indus
trial as well as infrequent hobbyist and the dedicated Piet builder. It shou
ld be interesting to see a reply of which I will share as soon as they get b
ack to me.
Although I have the professional interest, as of this week end I was putting
my table saw together, thinking about the hazards associated with it and ho
w to prevent them.
John
-----Original Message-----
From: glennthomas@flyingwood.com
Sent: Mon, 22 Jan 2007 10:17 PM
Subject: Re: Pietenpol-List: saving hands and fingers on the table saw
Hmmm,
I wonder if this technology could be adapted to my circa 1950 Cast Iron Craf
tsman table saw.
Glenn W. Thomas
Storrs, CT
http://www.flyingwood.com
----- Original Message -----
From: Cuy, Michael D. (GRC-RXD0)[ASRC]
Sent: Monday, January 22, 2007 2:51 PM
Subject: Pietenpol-List: saving hands and fingers on the table saw
Click on the hot dog demo video if nothing else.
Amazinga small electrical charge in this saw's blade is constantly
monitored and if your finger or hand
touches the blade it changes the charge slightly that the electronics are mo
nitoring in the blade
and an aluminum blade brake stops the saw in something like 1/4000th of a se
cond.
Amazinga small electrical charge in this saw's blade is constantly
monitored and if your finger or hand
touches the blade it changes the charge slightly that the electronics are mo
nitoring in the blade
and an aluminum blade brake stops the saw in something like 1/4000th of a se
cond.
http://www.sawstop.com/
href="http://www.matronics.com/Navigator?Pietenpol-List">http://www.matron
ics.com/Navigator?Pietenpol-List
href="http://forums.matronics.com">http://forums.matronics.com
________________________________________________________________________
ee AOL Mail and more.
Message 4
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Those saws with the auto stop were priced at $2,799 and I would venture
to say that they would not sell retrofit kits for older saws
due to liability if installed wrong and then you cut off some fingers.
Purely a guess, you'd have to contact them.
The video explained that every 9 minutes in the US someone accidentally
amputates their fingers and they say that the great majority
are professional/full-time cabinet makers and construction workers who
become so comfortable and relaxed around those saws that
they get bit when least expecting it.
I was fairly hyper-aware of that blade during the hundreds, if not
thousands of cuts I made too (Glenn Thomas) on my 1950's Craftsman
table saw (with a nice Freud blade that still cuts like butter) but
towards the end of the project could see myself falling into that casual
hotshot Mr. Table saw expert mentality and one kickback into my gut that
left a huge purple target woke me up bigtime.
Mike C.
do not archive
Message 5
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Subject: | Re: Steamin' Curious |
Granted, this isn't an airplane part, but here's an example of the power
of steam bending. In the attached photo you'll see a small wooden box I
just built (from a kit)
http://www.leevalley.com/wood/page.aspx?c=1&p=53191&cat=1,250,43313
&ap=1
The wood (cherry) is 1/16" thick, and was soaked in hot water for about
20 minutes, then put into my capstrip steamer for another 20 minutes. I
was amazed how pliable the wood became. Of course, the thinner the
strip, the more pliable it is, so it's no real surprise that the thin
strips were much more bendy (scientific term)than my 1/4" x 1/2" spruce
capstrips were, but look how sharp those ends are bent. It's important
to get the wood wet and hot. The heat helps to change the structure of
the lignin (the "glue" that holds the wood fibers together) and allows
the wood fibers to move. When the wood cools down and dries out, it
holds the shape. This box doesn't use any glue - just a few copper tacks
and a few tiny wooden dowels (toothpicks).
While it may be possible to build your wing ribs without steaming or
soaking your top capstrips and pre-bending them, I think it would put
unnecessary stress in your rib structure, and make fitting your pieces
into your rib jig more frustrating. Afterall, what you are trying to
achieve is a strong, stable, lightweight, consistant profile.
The fuselage longerons, however, have a much gentler curve (especially
the "Improved Air Camper" (1933) plans as compared to the Flying and
Glider plans), and are not necessary to pre-bend - although I haven't
done my fuselage yet, so what do I know. You would need quite a big
steam box to steam your longerons.
Bill C
Message 6
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Subject: | Re: Steamin' Curious |
Bill,
I built all my ribs before I knew I was supposed to steam the top cap strip.
The guys at Brodhead said they had heard of ribs breaking after the
airplane had been flown awhile. They scared me, so I took all my finished ribs,
and
soaked the noses of them in warm water in a 5 gal. bucket. When I took them
out, two of the top cap strip pieces had broken at the sharpest point. I
had to make these two ribs over again. My thinking was that soaking after
completion relieved the stress, and was better than nothing.
Dan Helsper
Poplar Grove, IL.
Message 7
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When it comes to power tools, especially the table saw, one always has
to keep in the FRONT (as opposed to the back) of one's mind just how
powerful these tools are and how much respect they deserve. Take any
chunk of wood and cut through it with a handsaw. Then cut that same
piece of wood and do the same cut on a tablesaw. All that work that your
arm did to cut the wood is packed into that one or two seconds of the
tablesaw cut. Fingers are softer than wood, and. sawblades don't
discriminate.
I got my wake-up call when one time I decided to adjust the blade height
without shutting the saw off. I got my eye level down to the saw table
height and was using a piece of wood as reference for the desired blade
height, when the wood made contact with the spinning blade. It kicked
back, and the small piece of wood hit me square between the eyes. An
inch or so to either side and I am sure I would have lost an eye. As it
was I just ended up with a very conspicuous welt in the middle of my
forehead. I was extremely lucky. Since then I have never made
adjustments to the blade height or angle without shutting the saw off.
ALWAYS be prepared for kickback, allowing a path for the wood to travel
in that doesn't include contact with or passing through your body. Use a
featherboard whenever possible.
I have one more reminder of the need to respect the power of the table
saw - my father-in-law's fingers (or lack thereof). He lost about one
and a half fingers in a fraction of a second on his table saw several
years ago. Unlike starfish, human fingers don't grow back.
Be safe. Stay awake.
Bill C
Message 8
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Subject: | Steamin' Curious |
Dan,
My guess is that the two capstrips that broke probably had defects or
weak spots in the wood, and would have also broken if you had pre-soaked
and pre-bent them. The lucky part is that you found out before you had
them assembled into a wing, and could easily replace them.
Bill C
Message 9
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Subject: | Re: Steamin' Curious |
That makes a good point, if the hot water test is found to be an acceptable stress
inspection technique. Should that become a recommended practice for checking
ribs either home made or purchased from another builder to identify ribs that
may fail in flight?
John
-----Original Message-----
From: eng@canadianrogers.com
Sent: Tue, 23 Jan 2007 11:31 AM
Subject: RE: Pietenpol-List: Steamin' Curious
Dan,
My guess is that the two capstrips that broke probably had defects or weak spots
in the wood, and would have also broken if you had pre-soaked and pre-bent them.
The lucky part is that you found out before you had them assembled into a
wing, and could easily replace them.
Bill C
________________________________________________________________________
Message 10
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Subject: | Steamin' Curious |
John,
Before you start cooking your ribs, one thing to watch out for is
whether the ribs were constructed with T-88 (or similar epoxy). These
epoxies are not intended for high temperature applications, and sticking
your assembled rib into a pot of boiling water might net you with a
collection of loose sticks.
Bill C.
Message 11
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I suppose a $2700 upgrade to a $25.00 kick-butt tablesaw found at a tag
sale doesn't make sense. What does make sense is push sticks, a concept
as old as tablesaws.
Do not archive
>
Message 12
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Absolutely, Glenn. My old Sears table saw gave me outstanding service
and used push sticks on 95% of my cuts. One push stick
and a second push type stick to keep the work piece against the fence.
Mike C.
Message 13
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Always keep to front of the sawblade as well, never reach around behind and pull
something through. This is how people loose fingers 99 percent of the time.
Del
Bill Church <eng@canadianrogers.com> wrote:
When it comes to power tools, especially the table saw, one always has to keep
in the FRONT (as opposed to the back) of one's mind
Del-New Richmond, Wi
"farmerdel@rocketmail.com"
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Never miss an email again!
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Message 14
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Actually, you want to be a little off to the side, not directly in front
of the blade. Carbide-tipped sawblades (which is the vast majority of
the sawblades sold today) have been known to throw a tooth on occasion,
if they are damaged. That tooth will be flying at over 100 - 125mph -
a nasty little projectile that you don't want to hit your body parts.
But, yes reaching to the back side of the blade is a good way to get
your fingers pulled into the blade.
Bill C.
Message 15
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Subject: | Fly-In in Central Florida... seeking Piets & other |
interesting airplanes
We Cessna drivers won't be turned away by a squadron of Piets if we try to
fly in will we?
>From: "Mike Whaley" <MerlinFAC@cfl.rr.com>
>To: "Pietenpol List" <pietenpol-list@matronics.com>
>Subject: Pietenpol-List: Fly-In in Central Florida... seeking Piets & other
>interesting airplanes
>Date: Mon, 22 Jan 2007 21:38:59 -0500
>
>
>Hi all,
>
>I know this is a bit off-topic but perhaps it will be of interest to those
>of you in Florida... we're having a little fly-in / aviation day type event
>on February 17th at Valkaria Airport (X59) and we're trying to round up
>"exotic" aircraft to show all the interesting aspects of general and
>recreational aviation to the community. ("Exotic" meaning anything except a
>white Cessna 152, basically... homebuilts, warbirds, ultralights, balloons,
>helicopters, anti-gravity boots, rocket belts, magic flying carpets, big
>red
>bulletproof capes, etc.) Valkaria is a small uncontrolled field a little
>bit
>south of Melbourne on the east coast of Florida, with cheap avgas and some
>interesting homebuilt activity.
>
>If anyone is interested in attending, get in touch with me and I can give
>you more info, or check out our website:
>
>http://www.mlbpilots.org/ValkariaAirFest/
>
>Thanks!
>
>-Mike
>
>Mike Whaley merlin@ov-10bronco.net
>Webmaster, OV-10 Bronco Association
>http://www.ov-10bronco.net/
>
>
Message 16
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Had one of them flying carbide tips embed in my eye lid once!!!!!
TABLE SAW SAFETY 101
your hands should never be on the table saw top. ---EVER---
use a push stick and a feather board, if you bugger up your wood - -
-big deal!!!,
it can be replaced, not so your fingers, besides it really sucks to try
and pick your nose with stumps.
20 yrs of making a living as a carpenter and still have all my digits
if you wrap your fingers around your board so as they make contact with
the edge of the table top when they get to it your hands will never go
near the blade.
now for angle grinders- - - had cutting wheel shatter on me this summer.
Makita 10k rpm, estimated distance to my belly 17 inches. the two inch
piece that hit my belly (yes guard was on) was found in the neighbors
garage 200 feet across the street. felt like a gun shot to the gut.
Doubeld over out of breath for 5 minutes. Waiting to see the blod gush
between my gloved fingers. I was real lucky, fortunately it hit side on
as opposed to on edge so no penetration. the apple sized
purple-pink-black-and-blue was sore as al getup for 32 weeks and took 3
months to dissipate.
be safe.
----- Original Message -----
From: Bill Church
. Carbide-tipped sawblades have been known to throw a tooth on occasion
Message 17
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that was meant to read 3 weeks!! not 32 I Have no stumps but I type as
if I doo!!!
-black-and-blue was sore as al getup for 32 weeks and took 3 months to
dissipate.
be safe.
Message 18
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Subject: | Re: Fly-In in Central Florida... seeking Piets & other |
interesting airplanes
My Pietenpol won't be able to make it (still a few years away from
flight), but I may be able to come in my Baby Ace. I bought it from a
guy in my EAA chapter (866), and it was built in 1955. Not too exotic,
but a homebuilt that old has to be a classic. I haven't flown it yet,
cause I'm one test ride away from my BFR and tailwheel endorsement. If
I get a chance to get in some flight practice and the weather looks good
I'll head your way.
Ben Charvet
Mims, Fl
Mike Whaley wrote:
>
>Hi all,
>
>I know this is a bit off-topic but perhaps it will be of interest to those
>of you in Florida... we're having a little fly-in / aviation day type event
>on February 17th at Valkaria Airport (X59) and we're trying to round up
>"exotic" aircraft to show all the interesting aspects of general and
>recreational aviation to the community. (
>
>
>
>
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