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Bandsaw Accident due to Machine Problems

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Blog entry by DantheWoodworker posted 08-29-2011 05:27 AM 2242 reads 1 time favorited 12 comments Add to Favorites Watch

Today I experienced my first power tool injury. I was using my Grizzly G055P 1 hp bandsaw. I was working on a bandsaw box made out of bubinga. This morning I noticed that my blade was burning the wood, so I thought it was dull and purchased a new one. But, the same thing happened. I reset my tracking and all of the bearings. When I went in to do a practice cut the blade suddenly came loose and fell off the weels, so I put the blade back on and tensioned it. So I went and started cutting out the box. The blade was wobbling so I increased the tension. I had to tighten a 1/4 blade all the way to what a half inch blade should be at. At the end of the cut all of the sudden the blade shot off, pulled the wood forward and then it hit my finger which was about 3 inches away from the saw blade. The blade came off like a slingshot. Thank god the cut was not bad enough to need stitches but it sure shook me up. Plus I took all the proper safety precautions. I was using the right size blade, tightened the blade according to the woodwhisperers instructions in his video and have used the manual to adjust the bearings etc. Plus I was keeping my distance from the blade. I think this was caused by a problem with the tension. I am calling Grizzly on Monday. At least I am all right. What do you guys think might of caused this?



12 comments so far

View derosa's profile

derosa

1568 posts in 2301 days


#1 posted 08-29-2011 05:36 AM

Make sure the bands around the wheels are in good shape and sitting properly in their tracks? Seems like an odd amount of tension but I’ve had to do the same thing with one blade I had and that shouldn’t cause the blade to pop off if the wheels are set right and the blade is tracking down the middle.

-- --Rev. Russ in NY-- A posse ad esse

View sras's profile

sras

4392 posts in 2595 days


#2 posted 08-29-2011 06:00 AM

Sorry to hear of your troubles. I’m afraid I can’t offer any help, but I am interested in learning what happened. Glad you were not hurt worse.

-- Steve - Impatience is Expensive

View tyskkvinna's profile

tyskkvinna

1310 posts in 2451 days


#3 posted 08-29-2011 07:22 AM

I also had a bandsaw blade fly off today and scare the daylights out of me. No clue what’s up with yours- still trying to sort out what happened to mine—but I have a lot of sympathy for what happened. Hopefully Grizzly will have some suggestions huh?

-- Lis - Michigan - http://www.missmooseart.com - https://www.etsy.com/people/lisbokt

View David Craig's profile

David Craig

2136 posts in 2574 days


#4 posted 08-29-2011 07:37 AM

Sounds either like the wheel tracking is off or, like what was already mentioned, that the rubber around the wheels is damaged. Tracking would cause the wobble and more tension would have put the right amount of pressure to make it vulnerable for popping off. Just my first impression based on what you have described.

David

-- There is little that is simple when it comes to making a simple box.

View Bearpie's profile

Bearpie

2601 posts in 2483 days


#5 posted 08-29-2011 07:32 PM

Also check the rollers or guides and make sure they are not out of position. I noticed that the thumb screw on my band saw kept coming loose and had to use a pair of pliers to tighten it. If the rollers are too far forward it will push the blade off. However this may not be your problem but still check that.

-- Erwin, Jacksonville, FL

View Grandpa's profile

Grandpa

3256 posts in 2141 days


#6 posted 08-29-2011 07:53 PM

Wheel tracking is off. The faces of the wheels are not parallel and in alignment. My guess since that is all we can do from here.

View ajosephg's profile

ajosephg

1878 posts in 3026 days


#7 posted 08-29-2011 09:18 PM

I am curious as to how the blade (even if it comes off or breaks) can hit your finger if all the guards and covers are in place. Can you give us some more details on that?

-- Joe

View Bertha's profile

Bertha

13003 posts in 2158 days


#8 posted 08-29-2011 09:29 PM

I would check the crown on the tires and make sure it’s tracking correctly. I’ve had a big blade break before and crumple up around the guard above the table. It didn’t get me but it certainly could have. I’ll never forget the shrieking sound it let off. Knock on wood, but if something gets me, it’ll probably be the bandsaw. I just dont’ have the requisite amount of fear for it, even with a 1 inch blade. Glad you’re OK.

-- My dad and I built a 65 chev pick up.I killed trannys in that thing for some reason-Hog

View HorizontalMike's profile

HorizontalMike

7154 posts in 2379 days


#9 posted 08-30-2011 04:52 AM

I am curious why you are burning the wood. Sounds like maybe one or more of the following may be contributing factor(s):

++ you are cutting too thick of piece of wood with a blade that has too many teeth in the cut (maybe the gullets are failing to clear)

++ you are feeding the piece too rapidly

++ you might be running the BS speed too high (your BS has 2-speeds) for what you want to cut

-- HorizontalMike -- "Woodpeckers understand..."

View DantheWoodworker's profile

DantheWoodworker

18 posts in 1986 days


#10 posted 08-30-2011 06:36 AM

Joe, somehow the blade snapped out through the guard.

View cloakie1's profile

cloakie1

204 posts in 2020 days


#11 posted 08-30-2011 08:06 AM

make sure that the tyres are kept clean on the wheels and there is no damage…..the new blade could have been a crook one as well …just shown up more if the tyres are dirty. burning could be lack of set on the blade as well as feed speed….and a broken bandsaw blade can be bloody scary!!! glad your ok

-- just get stuck in and have a go!!!

View cloakie1's profile

cloakie1

204 posts in 2020 days


#12 posted 08-30-2011 08:27 AM

make sure that the tyres are kept clean on the wheels and there is no damage…..the new blade could have been a crook one as well …just shown up more if the tyres are dirty. burning could be lack of set on the blade as well as feed speed….and a broken bandsaw blade can be bloody scary!!! glad your ok

-- just get stuck in and have a go!!!

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