Author Topic: Saw blade condition or is this normal?  (Read 3135 times)

Offline Gabby

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Re: Saw blade condition or is this normal?
« Reply #15 on: February 08, 2011, 01:57:19 am »
OK Teach
Go back and read my last post again. I guess I shouldn't have abbreviated Plywood. LOL
I do know what you are referring to in the internal stresses in a piece of wood doing strange things, cutting sheet metal with a torch will do essentially the same thing. Not that we're into metal work here.
All this being said, I didn't expect this result in plywood due to the alternating directions of the layers.
We live to learn.
When is the test, second Tuesday next week?
I'll bring a shiney red apple.  ;D
Gabby
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Offline jimbo

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Re: Saw blade condition or is this normal?
« Reply #16 on: February 08, 2011, 02:32:58 am »
That is wood stress mrsn and most pine do this white and red when dry and cut long grain and is a pain if you need to laminate the wood
Jimbo

Offline julief

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Re: Saw blade condition or is this normal?
« Reply #17 on: February 08, 2011, 08:08:03 am »
You are probably using a reverse tooth blade.  There are a few teeth pointing up at the bottom of the blade to make a clean cut on the bottom of your project.  When your wood starts bouncing up and down it is know as "chatter".  What happens is the teeth grab and the movement of your blade "bounces" the wood up and down.  You can usually put downward pressure on you wood, turn the saw back on, and the blade will break free and continue cutting.

Chachi

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Re: Saw blade condition or is this normal?
« Reply #18 on: February 08, 2011, 09:46:58 am »
I did notice that it took more pressure than I anticipated in order to get it to cut. Sort of like trying to turn a piece on the lathe with a dull tool. you end up burning or getting a catch. The sharp gouge cuts like butter.

I have learned that when you do that it is time to change the blade out so I would say you have answered your own Question when your blade is acting as such change it when it first starts.

As for power to the "Shop"shed run your self a outdoor electric cord cut off one end at the start and then cut off all the ends of a 100 footer until you have enough wire now run down into some PVC pipe (after you have wire nutted and taped all the wires up) dig a trench deep enough to cover over the PVC pipe drill a hole in the wall of your shop to run the end of the cord into. Foam ins. in the hole to block out all of the drafts. Now buy a Power Bar and then plug it in and there you go power to the shop/shed or skip all that and go with Romex if you know what your doing........lol Good luck  ;D

cameronj

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Re: Saw blade condition or is this normal?
« Reply #19 on: February 08, 2011, 10:00:11 am »
I'm ready too.....is it 'open-saw'?
Jim

HWPlmbr1

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Re: Saw blade condition or is this normal?
« Reply #20 on: February 08, 2011, 01:33:20 pm »
Yes! A remedial class, even though it is a test, with MrsN! Takes hands back out of pockets, lifts head up, smiles, eyes brighten and puts a skip in his walk!! :) :) :)
Okay okay, you're married, can't a guy have a crush on his teacher? :) :) :) 8)

Shyly hands MrsN an apple because, your the apple of my eye, but can't say anything because of the apple sized lump in my throat! ;D

Stumbles to his desk, grins, ready teacher! :)

Offline Gabby

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Re: Saw blade condition or is this normal?
« Reply #21 on: February 08, 2011, 07:44:27 pm »
OK is there an electrician here that can tell me what Gage cord I would need to go 300+ feet and not have too much line resistance to run power tools like a Jet lathe a craftsman floor model drill press and 6 fluorescent four foot double tube lights, and throw in the scroll saw. I know they won't all be on at one time. I have a 6000W generator that puts out 220 volts split into 2-110 volt circuits one for the lights and one for the outlets, and if I have the lights on and turn the lathe or drill on the lights dim briefly. I don't use it anymore as gas here is nearly $3.50 gallon and five gallons doesn't last long.
If I would be overloading the circuit breaker at the house due to resistance, it's a long walk to go and re-set it, and that would get old in a hurry.

I'm not trying to be snide, but just pointing out an observation. Most responders don't take the time to actually read the questions and as a result their answers are some times off base. I have done so myself so I'm not trying to make myself out as smarter than anyone else, just an observation.
Our responses will be better if we just take our time.
My thanks to those who are trying to be helpful, you are appreciated.
Gabby
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Offline Gabby

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Re: Saw blade condition or is this normal?
« Reply #22 on: February 08, 2011, 07:46:19 pm »
You are probably using a reverse tooth blade.  There are a few teeth pointing up at the bottom of the blade to make a clean cut on the bottom of your project.  When your wood starts bouncing up and down it is know as "chatter".  What happens is the teeth grab and the movement of your blade "bounces" the wood up and down.  You can usually put downward pressure on you wood, turn the saw back on, and the blade will break free and continue cutting.

Nope they all point down.
Gabby
MOLON LABE.
TRUST IN GOD!
 DON'T BELIEVE ALL YOU HEAR & DON'T SAY ALL THAT YOU THINK !

Offline Russ C

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Re: Saw blade condition or is this normal?
« Reply #23 on: February 08, 2011, 08:51:42 pm »
@Gabby,
At 300' it would be a whole lot better to put a sub panel in your shop with breakers than to try to bring one line with outlets.

Wire size ( 0 ) Maximum amps for power transmission( 150 )You could have 7-20 amp circuits.
Wire size ( 1 ) Maximum amps for power transmission( 119 )You could have 6-20 amp circuits.
Wire size ( 2 ) Maximum amps for power transmission( 94 )You could have 5-20 amp circuits.

Each circuit would be 120 volts.
One circut could be used for lighting.  

Most extension cords for regular duty use are 14 awg or 12 awg at best.

12 awg at 300 ' pulling 20 amps will have a voltage drop of 19.59 v leaving you with only 100.41 volts to work with, really being unaxceptable.

This is just a suggestion/estimations but I feel this would work better for you.  8)
« Last Edit: February 08, 2011, 09:14:53 pm by Russ C »
russ@simplywoodencreations.com

Keep The Blade On The Line.

Offline mrsn

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Re: Saw blade condition or is this normal?
« Reply #24 on: February 08, 2011, 11:20:59 pm »
hey gabby, sorry you didn't find my lecture notes interesting. I did state that it wasn't the problem you were experiencing, but interesting none the less.
Mrs. N

Offline Gabby

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Re: Saw blade condition or is this normal?
« Reply #25 on: February 09, 2011, 03:11:10 am »
hey gabby, sorry you didn't find my lecture notes interesting. I did state that it wasn't the problem you were experiencing, but interesting none the less.
Mrs. N

I found it interesting and even offered to bring a shiny red apple!
Gabby
MOLON LABE.
TRUST IN GOD!
 DON'T BELIEVE ALL YOU HEAR & DON'T SAY ALL THAT YOU THINK !

Offline Gabby

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Re: Saw blade condition or is this normal?
« Reply #26 on: February 09, 2011, 03:24:51 am »
@Gabby,
At 300' it would be a whole lot better to put a sub panel in your shop with breakers than to try to bring one line with outlets.

Wire size ( 0 ) Maximum amps for power transmission( 150 )You could have 7-20 amp circuits.
Wire size ( 1 ) Maximum amps for power transmission( 119 )You could have 6-20 amp circuits.
Wire size ( 2 ) Maximum amps for power transmission( 94 )You could have 5-20 amp circuits.

Each circuit would be 120 volts.
One circut could be used for lighting.
 
Most extension cords for regular duty use are 14 awg or 12 awg at best.

12 awg at 300 ' pulling 20 amps will have a voltage drop of 19.59 v leaving you with only 100.41 volts to work with, really being unaxceptable.

This is just a suggestion/estimations but I feel this would work better for you.  8)

Thanks Russ that jibes with my calculations I figured it would cost over $1000 to do because of prices for wire of that gage, and trenching. Just too much money for our budget, should have done it when we first bought the place and still had some money to spend for improvements. Water over the dam. So now I get a scroll saw that doesn't make too much mess compared to lathe shavings and put it in my carport next to the house.
If it's too cold I'll just be in here giving everyone a bad time. Summer time shouldn't be too bad, we only get a few weeks of really hot weather 90 and over 100. I used to work in hotter weather as a youngster growing up near Phoenix, AZ. But I couldn't take it any more.
Gabby
MOLON LABE.
TRUST IN GOD!
 DON'T BELIEVE ALL YOU HEAR & DON'T SAY ALL THAT YOU THINK !

 

SMF

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