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Dan
 
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Default Ruining bandsaw blades?

Hi everyone I am having a problem with resawing wood and think I have ruined
2 bandsaw blades. What I am doing is resawing 2X4's into 1/2 inch thick
pieces. The bandsaw is a 14" Jet. After sawing about 6-7 2X4s the blade
does not want to cut straight anymore. If I remove the fence and cut
freehand the blade wants to lead right to left badly, about a 20-30 degree
line from straight, when the blade was new the lead angle was very slight.
The first blade that got ruined was a WoodSlicer fro Highland Hardware and
the 2nd was a 3/4" 4tpi Delta. I have tried to check the alginment of the
guides and the blade tracking, but no amout of fiddling seems to change the
condition. If i feel the teeth on the blade it seems sharp?
Am I expecting too much life out of the blades? This does not seem like a
lot of useage to dull the blade. Am I doing something wrong here? Any help
would be appreciated!



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Bill Rittner
 
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Default Ruining bandsaw blades?

Check that the blades are running in the center of the tires. On a 14"
bandsaw if you let a 3/4" blade come forward enough to run on the metal rim
of the wheel you remove the set and ruin the blade. This is why I only use
1/2" blades. It prevents this from happening and as most of you already know
I am cheap :-) From your description it sounds like you have lost the tooth
set from the inside of the blades. I have a 1/2" Timber Wolf blade I have
been using to resaw for more than 2 years on a 12" Craftsman and it still
cuts true.

--
Bill Rittner
R & B ENTERPRISES



"Don't take this life too seriously.......nobody
gets out alive" (Unknown)

Remove "no" to reply
"Dan" wrote in message
...
Hi everyone I am having a problem with resawing wood and think I have

ruined
2 bandsaw blades. What I am doing is resawing 2X4's into 1/2 inch thick
pieces. The bandsaw is a 14" Jet. After sawing about 6-7 2X4s the blade
does not want to cut straight anymore. If I remove the fence and cut
freehand the blade wants to lead right to left badly, about a 20-30 degree
line from straight, when the blade was new the lead angle was very slight.
The first blade that got ruined was a WoodSlicer fro Highland Hardware and
the 2nd was a 3/4" 4tpi Delta. I have tried to check the alginment of the
guides and the blade tracking, but no amout of fiddling seems to change

the
condition. If i feel the teeth on the blade it seems sharp?
Am I expecting too much life out of the blades? This does not seem like a
lot of useage to dull the blade. Am I doing something wrong here? Any

help
would be appreciated!





  #3   Report Post  
Nova
 
Posts: n/a
Default Ruining bandsaw blades?

Dan wrote:

Am I expecting too much life out of the blades? This does not seem like a
lot of useage to dull the blade. Am I doing something wrong here? Any help
would be appreciated!


By chance, did these blades happen to hit the blade guard? On a 14" saw there's
not a lot of clearance between the teeth of a 3/4" blade and the front of the
guard.

--
Jack Novak
Buffalo, NY - USA
(Remove "SPAM" from email address to reply)


  #4   Report Post  
Lawrence A. Ramsey
 
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Default Ruining bandsaw blades?

It still sounds to me like you don't have your cool blocks adjusted
correctly. Do you? They will hold it to a lot closer tolerance than
that.





On Sun, 02 Nov 2003 22:41:11 GMT, "Dan" wrote:

Hi everyone I am having a problem with resawing wood and think I have ruined
2 bandsaw blades. What I am doing is resawing 2X4's into 1/2 inch thick
pieces. The bandsaw is a 14" Jet. After sawing about 6-7 2X4s the blade
does not want to cut straight anymore. If I remove the fence and cut
freehand the blade wants to lead right to left badly, about a 20-30 degree
line from straight, when the blade was new the lead angle was very slight.
The first blade that got ruined was a WoodSlicer fro Highland Hardware and
the 2nd was a 3/4" 4tpi Delta. I have tried to check the alginment of the
guides and the blade tracking, but no amout of fiddling seems to change the
condition. If i feel the teeth on the blade it seems sharp?
Am I expecting too much life out of the blades? This does not seem like a
lot of useage to dull the blade. Am I doing something wrong here? Any help
would be appreciated!



  #5   Report Post  
Dan
 
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Default Ruining bandsaw blades?

On Sun 02 Nov 2003 05:05:03p, "Bill Rittner" wrote in
news:r4gpb.118854$0Z5.13375@lakeread03:

Check that the blades are running in the center of the tires. On a 14"
bandsaw if you let a 3/4" blade come forward enough to run on the
metal rim of the wheel you remove the set and ruin the blade. This is
why I only use 1/2" blades. It prevents this from happening and as
most of you already know I am cheap :-) From your description it
sounds like you have lost the tooth set from the inside of the blades.
I have a 1/2" Timber Wolf blade I have been using to resaw for more
than 2 years on a 12" Craftsman and it still cuts true.


That's just what I'm thinking too. Instead of checking to see if the teeth
feel sharp, I think maybe you should check to see if the "set" is the same
on both sides. If one side of the blade made contact with the metal wheel
instead of the tire, even for only a few revolutions, the teeth on that
side would be pushed just about straight. I know that would make the blade
want to veer sharply, but I can't remember now which way. I think it would
want to wander towards the side that still had the proper set, but I don't
think I'd bet on that.

Dan


  #6   Report Post  
Howard Ruttan
 
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Default Ruining bandsaw blades?


"Lawrence A. Ramsey" wrote ...
It still sounds to me like you don't have your cool blocks adjusted
correctly. Do you? They will hold it to a lot closer tolerance than
that.


Check you tension too. I find those Delta blades to be especially cheap and
soft and if you leave the tension on while the saw is not in use they can
get stretched and then they tend to wander around. I have resawed with them
in the past and I found that you have to heap a little extra tension on to
keep them taught so they cut straight. The Woodslicer blade I can't comment
on, but the Delta blade should give you more life than that. I also second
the comments about the cool blocks. Have you tried making your own out of
hardwood?

http://www.inthewoodshop.org/methods/wwc03n.shtml

--

Cheers,
Howard

----------------------------------------------------------
Working wood in New Jersey -
Visit me in the woodshop -
www.inthewoodshop.org


  #7   Report Post  
George
 
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Default Ruining bandsaw blades?

Keep the blade clean. You're cutting extremely resinous knots and pockets,
I'm sure. Increased resin on one side equals drag, equals the same blade
movement as loss of set and unequal cool block (get ceramic) gap.

I like some WD40 on a rag, power off, hand rotate blade in reverse to clean
the gum off. Lubes the blocks, too.

"Howard Ruttan" wrote in message
...

"Lawrence A. Ramsey" wrote ...
It still sounds to me like you don't have your cool blocks adjusted
correctly. Do you? They will hold it to a lot closer tolerance than
that.


Check you tension too. I find those Delta blades to be especially cheap

and
soft and if you leave the tension on while the saw is not in use they can
get stretched and then they tend to wander around. I have resawed with

them
in the past and I found that you have to heap a little extra tension on to
keep them taught so they cut straight. The Woodslicer blade I can't

comment
on, but the Delta blade should give you more life than that. I also

second
the comments about the cool blocks. Have you tried making your own out of
hardwood?

http://www.inthewoodshop.org/methods/wwc03n.shtml



  #8   Report Post  
JMartin957
 
Posts: n/a
Default Ruining bandsaw blades?


Hi everyone I am having a problem with resawing wood and think I have ruined
2 bandsaw blades. What I am doing is resawing 2X4's into 1/2 inch thick
pieces. The bandsaw is a 14" Jet. After sawing about 6-7 2X4s the blade
does not want to cut straight anymore. If I remove the fence and cut
freehand the blade wants to lead right to left badly, about a 20-30 degree
line from straight, when the blade was new the lead angle was very slight.
The first blade that got ruined was a WoodSlicer fro Highland Hardware and
the 2nd was a 3/4" 4tpi Delta. I have tried to check the alginment of the
guides and the blade tracking, but no amout of fiddling seems to change the
condition. If i feel the teeth on the blade it seems sharp?
Am I expecting too much life out of the blades? This does not seem like a
lot of useage to dull the blade. Am I doing something wrong here? Any help
would be appreciated!


Most bandsaw blades will lead one way or the other, but that is way too much.
Resawing 6-7 2x4s should be nothing for a good blade.

If by leading from right to left you mean that the blade wants to cut in
towards the column, you've taken the set or edge off the outside of the blade.
Could be rubbing in a few places. I'd check the guides first.

John Martin
  #9   Report Post  
Jerry Mosier
 
Posts: n/a
Default Ruining bandsaw blades?

Make sure the set of the tooth is clear (out front) of the guides.
"JMartin957" wrote in message
...

Hi everyone I am having a problem with resawing wood and think I have

ruined
2 bandsaw blades. What I am doing is resawing 2X4's into 1/2 inch thick
pieces. The bandsaw is a 14" Jet. After sawing about 6-7 2X4s the blade
does not want to cut straight anymore. If I remove the fence and cut
freehand the blade wants to lead right to left badly, about a 20-30

degree
line from straight, when the blade was new the lead angle was very

slight.
The first blade that got ruined was a WoodSlicer fro Highland Hardware

and
the 2nd was a 3/4" 4tpi Delta. I have tried to check the alginment of

the
guides and the blade tracking, but no amout of fiddling seems to change

the
condition. If i feel the teeth on the blade it seems sharp?
Am I expecting too much life out of the blades? This does not seem like a
lot of useage to dull the blade. Am I doing something wrong here? Any

help
would be appreciated!


Most bandsaw blades will lead one way or the other, but that is way too

much.
Resawing 6-7 2x4s should be nothing for a good blade.

If by leading from right to left you mean that the blade wants to cut in
towards the column, you've taken the set or edge off the outside of the

blade.
Could be rubbing in a few places. I'd check the guides first.

John Martin




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