LumberJocks

Broken Band Saw Blade

  • Advertise with us

« back to Power Tools, Hardware and Accessories forum

Forum topic by mangorockfish posted 07-26-2020 08:41 PM 354 views 0 times favorited 8 replies Add to Favorites Watch
View mangorockfish's profile

mangorockfish

28 posts in 1206 days


07-26-2020 08:41 PM

A few weeks ago I bought a 12” Craftsman Professional band saw for a decent price and in beautiful condition except missing the table insert and leveling pin. I installed new Blue Max tires on it and tuned it up. Tensioned up the blade and turned it on, ran like a champ for about 10 seconds and the 1/4” blade snapped. I had the tension at between the 1/4” and 3/8” mark on the guide. The blade had some rust stains on it, but seemed ok when I looked at it before reinstalling it after I put the new tires on it. It didn’t break at the weld, so could it be a weak/or faulty blade, or should I be looking for something to do with the saw? I’m sure the blade was the original. Thanks for any thoughts on this.


8 replies so far

View ibewjon's profile

ibewjon

1974 posts in 3648 days


#1 posted 07-26-2020 08:48 PM

Don’t trust the tension guide. There are better ways to tension a blade.

View John Smith's profile

John Smith

2687 posts in 1017 days


#2 posted 07-26-2020 10:35 PM

sometimes blades just break – especially with a bad weld.
just replace the blade and get back to work.

.

-- there is no educational alternative to having a front row seat in the School of Hard Knocks. --

View LeeRoyMan's profile

LeeRoyMan

1418 posts in 582 days


#3 posted 07-26-2020 11:11 PM

10 seconds sounds like just about the right amount of time for the blade to walk off the wheel and catch on something causing it to brake.

Did you turn the wheel by hand after putting it on to make sure it was riding correctly?

-- I only know... what I know....

View bilyo's profile

bilyo

1163 posts in 1957 days


#4 posted 07-27-2020 01:16 AM

If you are so inclined, your bandsaw blades are easy to repair with silver solder and a propane torch. The supplies will initially cost you more than the price of a new blade but, you will then have them for later repairs if needed. You might consider buying a new blade and then getting the supplies to repair the broken one. You will then either have a spare blade or will have the practice and know-how for future repairs. I can give you more details if you are interested and there are YouTube videos on the subject.

View mangorockfish's profile

mangorockfish

28 posts in 1206 days


#5 posted 07-27-2020 02:50 AM

Thanks, ordering a new blade from Carter in the morning.

View 23tony's profile

23tony

59 posts in 1024 days


#6 posted 07-27-2020 05:37 PM


Don t trust the tension guide. There are better ways to tension a blade.

- ibewjon


What method would you recommend?

View Craftsman on the lake's profile

Craftsman on the lake

3468 posts in 4292 days


#7 posted 07-27-2020 06:02 PM

The tensioning guide is only a rough estimate for the blade width. I tension mine by pushing it to the side. If it give about an 1/8 of an inch or maybe a little less it’s good on my saw. I might have the same saw. it’s from the late 70’s.

-- The smell of wood, coffee in the cup, the wife let's me do my thing, the lake is peaceful.

View CaptainKlutz's profile

CaptainKlutz

3609 posts in 2349 days


#8 posted 07-27-2020 08:57 PM

What method would you recommend?
- 23tony

For my Timberwolf blades I use the mfg recommended flutter test method:
https://www.timberwolfblades.com/blade-tension.php

YMMV

-- If it wasn't for bad luck, I wouldn't have no luck at all, - Albert King - Born Under a Bad Sign released 1967

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com