Bandsaw problem

mclarenross · Post by **mclarenross** » Fri Dec 07, 2012 9:12 am

I have a Delta 9" Bandsaw in my shop that I use for cutting metal stock. It has worked fine for this purpose for years now. I moved about 6 months ago and when I set it back up and bolted it to the bench I made for it it will not cut anything now. It acts like the blade is just compleatly dull, so I replaced the blade. No dice, still not cutting. I have checked all the adjustments, everything is tight and the blade it tracking correctly. Yes it is on the spools the correct direction for cutting. I'm stumped. Anyone got any suggestions for getting this back to cutting? I hate using a hack saw.

hammermill · Post by **hammermill** » Fri Dec 07, 2012 10:35 am

maybe a pic would help but you may need to have a friend look, as you have to be refusing to see the obvious.

blade backwords, stop preventing full motion of saw. some piece of debris dulling blades. these all cone to mind

refinery mike · Post by **refinery mike** » Fri Dec 07, 2012 2:37 pm

It has got to be something simple, try looking at the teeth of the blade again, They should tell you what is happening. If they are worn flat then something is dulling them. Could it be that the teeth are facing the wrong way. We used to flip band saw blades on apprentices as a joke. I assume you know that the teeth can be flipped around backwards on a blade but sometimes it can get confusing, On a portaband the teeth come towards you , but on some bench saws the teeth go away from you. Have a cup of coffee and then It will all look clearer.

STRR · Post by **STRR** » Fri Dec 07, 2012 9:09 pm

If the blade is on correctly and is sharp, is the motor running backward? The band should be moving downward to cut. I am sure you already know this but as was stated: It has got to be something simple.

Good Luck,
Terry

wlw-19958 · Post by **wlw-19958** » Fri Dec 07, 2012 9:31 pm

Hi There,

Just to add to the "simple things to check" list, is
the blade oriented correctly. I mean, are the teeth
pointed up instead of down? Of course, they should
point down.

Good Luck!
-Blue Chips-
Webb

rodw · Post by **rodw** » Sat Dec 08, 2012 7:33 am

Is there enough weight on the blade?

Is the blade too fine for the material you are cutting?

mclarenross · Post by **mclarenross** » Sat Dec 08, 2012 10:51 pm

Well guys Im still stuck. I went through the thing today from one end to the other. Cleaned it, oiled it, checked the blade, adjusted the rollers, made sure everything was running true, still wont cut a loaf of bread! Im gonna buy a new blade for it I think. This one still looks and feels sharp, the teeth arent rounded off or chipped or missing or anything. I just bought this blade but I may have dulled it somehow already. Thanks for the help guys.

JTiers · Post by **JTiers** » Sun Dec 09, 2012 12:11 am

"Acts like it is dull".....

That can have many meanings....... Does it even "mark" 1018? Even a dull blade cuts, it just cuts so badly that you don't want to use it, usually.

Will it cut a piece of wood?

if no, then there has to be something you think is right but actually it is radically wrong.

if it WILL cut wood, does it cut it reasonably fast? if it is slow, the teeth must be dull, missing, or blade is on with teeth pointing backwards. or the feed system is way off.

spro · Post by **spro** » Sun Dec 09, 2012 1:28 am

At some point the blade was readjusted back by the thrust bearing etc. The guides are ball bearings and these hard races over the necessary tips, for seconds, may have beat those tips. It is the same as a dull point on a threading tool.

Post by **Harold_V** » Sun Dec 09, 2012 2:43 am

mclarenross wrote:Well guys Im still stuck. I went through the thing today from one end to the other. Cleaned it, oiled it, checked the blade, adjusted the rollers, made sure everything was running true, still wont cut a loaf of bread! Im gonna buy a new blade for it I think. This one still looks and feels sharp, the teeth arent rounded off or chipped or missing or anything. I just bought this blade but I may have dulled it somehow already. Thanks for the help guys.

Something isn't making sense. Can you post a picture of the blade on the saw?

If the blade, at any time, has been run reversed, the teeth may feel sharp, but they won't cut. If you're not familiar with tooth geometry, it can fool you easily.
Be aware that blades can be turned inside out, so when they're mounted on the saw, the teeth face the wrong direction (so the blade is running backwards, in spite of the fact that it is traveling in the proper direction). They won't cut worth a damn that way, although they will cut wood slowly. I'm beginning to wonder if, perhaps, your blade needed to be turned inside out before you installed it. If it did, a new one is now in order. Make sure the teeth aim in the right direction before installing this time.

Harold

Fabitfast · Post by **Fabitfast** » Tue Dec 11, 2012 1:04 pm

It should be correctly set up , the blade must be installed properly and must be on the correct
direction.

hammermill · Post by **hammermill** » Tue Dec 11, 2012 4:34 pm

well i have analized all data and concluded the saw is unpluged. not to worry it happens to tv,s and computers also.

The Home Machinist!

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