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Forum topic by kmetzger posted 07-30-2016 09:22 PM 521 views 0 times favorited 9 replies Add to Favorites Watch
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kmetzger

145 posts in 1278 days


07-30-2016 09:22 PM

I’ve had my Shop Fox W1706 14” bandsaw for two years now and have changed blades before with no problems. But a few weeks ago my blades started breaking and I can’t figure out what I’m doing wrong. A few weeks ago two blades snapped in quick succession, so when I mounted the third blade I checked everything carefully: the bearings, tracking and above all tension. I figured I’d set the tension very low for a while, even allowing some fluttering just to be on the safe side. But just now, after using the third blade for a week it suddenly snapped again. I’d be grateful for any ideas on how to solve this problem.

-- Kim, Ajijic, Mexico, http://tinyurl.com/7w5fm25


9 replies so far

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MrUnix

4203 posts in 1659 days


#1 posted 07-30-2016 09:28 PM

What does the break look like – post a picture or two.

Cheers,
Brad

-- Brad in FL - To be old and wise, you must first be young and stupid

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TheFridge

5764 posts in 946 days


#2 posted 07-30-2016 09:34 PM

Bad batch of blades?

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

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kmetzger

145 posts in 1278 days


#3 posted 07-30-2016 09:46 PM

Just a clean break straight across. Not at the weld.

-- Kim, Ajijic, Mexico, http://tinyurl.com/7w5fm25

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MrUnix

4203 posts in 1659 days


#4 posted 07-30-2016 09:51 PM

Bandsaw blade trouble shooting guide

Cheers,
Brad

-- Brad in FL - To be old and wise, you must first be young and stupid

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Tabletop

77 posts in 208 days


#5 posted 07-31-2016 12:33 AM

I bought a bandsaw a while back that the seller had said it was breaking blades. I found the problem, the bottom backing bearing had at one time been set too far forward. Blade had wore a grove in it. When he reset blade where it was not touching it ran fine. However he hadn’t noticed the grove but just was going through several blades. I bought it cheap. 14” powermatic $450. I figure when it was pushed back against bearing it would catch that grove and break. I replaced bearing and it has run break free for 1 1/2 years.

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doubleDD

5213 posts in 1503 days


#6 posted 07-31-2016 01:12 AM

On my old bandsaw, a blade suddenly broke for what I thought was no good reason. Replaced the blade and after 30 seconds it fell off, didn’t break this time but let’s say it got a new shape. Checked everything as you and decided to try and put it back on. That’s when I noticed the tires where slipping a bit. I tried using rubber cement to re glue them and it worked fine. I ended up getting new tires after that but at least I found the problem. At the time the bandsaw was about a year old so it was something I didn’t expect. Worth looking into.

-- Dave, Downers Grove, Il. -------- When you run out of ideas, start building your dreams.

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bobkberg

420 posts in 2533 days


#7 posted 07-31-2016 01:25 AM

I agree with what the other folks have said – close examination all over, very carefully.

So I’ll ask something else:

Have you changed brands of blades?
If you look at the package, is there any lot number indicated anywhere?
If it’s a clean straight break, I’d try looking at the area around the break with really bright light and magnification to see if there are any scratches or scuffs near the break on the sides and back of the blade.

Call the manufacturer or distributor and ask if they have had any recent problems.

Good luck!

-- Bob www.singularengineering.com - A sideline, not how I earn a living

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kmetzger

145 posts in 1278 days


#8 posted 08-02-2016 02:38 AM

Just discovered that my left upper guide bearing had seized. Would that cause blades to break?

-- Kim, Ajijic, Mexico, http://tinyurl.com/7w5fm25

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Tabletop

77 posts in 208 days


#9 posted 08-02-2016 07:17 AM

I would bet it is possible.

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