Welcome to Scroll Saw Woodworking & Crafts Message Board, an online scroll saw forum community where you can join thousands of scrollers from around the world discussing all things related to Scrolling. To gain full access to the message board you must register for a free account.
As a registered member you will be able to:
* Browse over 200,000 posts.
If you have any problems with the registration process or your account login, please contact the Scroll Saw Woodworking & Crafts Support Team.
| ||LinkBack||Thread Tools||Display Modes|
|05-14-2012, 02:48 AM||#1|
Join Date: May 2012
Thanked 0 Times in 0 Posts
Blades continually breaking
I am new to scroll sawing. I have a Delta 40-150 scroll saw. I'm not sure what i am doing wrong but the blades will break after 1 - 2 cuts. They don't seem to last very long at all. Is that normal? When the blade breaks the machine will make a very loud sound like it is coming apart until i turn it off and get a new blade inserted. I thought if I could find a way to slow down the motor that it would help save the blades and give me more control on my cuts, but I don't know it that is do-able on this model. Any input would be appreciated.
|05-14-2012, 03:03 AM||#2|
Join Date: Feb 2012
Thanked 0 Times in 0 Posts
As others will probably tell you:
Check that your tension is tight enough.
Make sure you're not burning them up.
Check the alignment between the top and bottom blade holders.
Make sure you're pressing the wood straight into the blade and not sideways.
Change the blades frequently. Dull blades are no good. Sometimes you can get 5" or 5' with a single blade, check them often and when the cutting slows, change it.
|05-14-2012, 06:51 AM||#3|
Join Date: Oct 2011
Location: I live in South West Wales
Thanked 12 Times in 9 Posts
It sounds as if you are pushing the wood to hard into the blade when you are cutting, just gently guide the wood. Also it could be the make of blade. If you are using blades that came with the saw they are usually rubbish. Get some FD blades.I am not familiar with your saw, if it is a single speed i doubt if you can slow it down.
|05-14-2012, 11:42 AM||#4|
Creek Boy from WAY Back
Join Date: Jun 2008
Location: 40.22°N 85.46°W
Blog Entries: 9
Thanked 22 Times in 20 Posts
Yes, Delta's do sound as if the world is ending when a blade breaks. And new scrollers do seem to break a fair amount of blades until they get the tension and feed speed right.
Hardware store blades have a very poor life. Get some Flying Dutchman or Olsons and get the tension so that the blade sounds like a guitar string when plucked. There should be less than 1/8" deflection side to side on a properly tensioned blade.
The only blades I've ever broken from overtensioning are very small blades.
"Music takes us places language alone can not"--Glenn Frey
Aim to be a better person--what happens if you miss?
|05-14-2012, 11:57 AM||#5|
Join Date: Jul 2005
Location: Littleton, NC
Thanked 22 Times in 22 Posts
When blades break it does create a racket on many saws. Make sure you are using quality blades and feed not force the wood. When you put a blade in and tension it then pluck it. It should make a nice musical ping and not a thud.
|05-14-2012, 02:10 PM||#6|
Join Date: Jan 2009
Location: Right behind you.
Thanked 2 Times in 1 Post
I would recommend the same things that everyone else is recommending.
Get some Flying Dutchman blades from MikesWorkshop. The best blades anywhere IMHO.
Make sure that the blades are properly tensioned.
Make sure you are pushing straight at the blade rather then forcing it to one side.
Change the blade when it becomes dull. A dull blade will break as it requires much more pressure to get it to cut.
You could also try using clear packaging tape on top of the cut line. The tape lubricates the blade during the cut and, from my personal experience, extends the blade life greatly.
Also remember that a scroll saw does not cut as fast as other woodworking tools such as a bandsaw or a table saw. Just let the blade do the cutting. Do not, repeat, do NOT try to force the cut. You will end up frustrated, with sloppy cuts, broken blades, burned cuts, pretty much everything you don't want.
Oh, one last thing, as Mr. McDonald said, don't worry about over-tensioning the blade. Breaking a blade because of too much tension is much rarer then blade breakage from insufficient tension. Matter of fact, I have only done it once in four years.
I believe there are more instances of the abridgement of freedom of the people by gradual and silent encroachments by those in power than by violent and sudden usurpations. James Madison
|05-14-2012, 03:33 PM||#7|
Join Date: Jun 2006
Location: Butler, PA
Thanked 92 Times in 75 Posts
Where are the blades breaking? Close to the ends or in the middle?
If they are breaking close to the ends, it could indicate a problem with how they are clamped. If they are breaking in the middle, then it's likely one of the reasons already given.
Homer : "Oh, and how is education supposed to make me feel smarter. Besides, every time I learn something new, it pushes some old stuff out of my brain."
|05-21-2012, 03:16 PM||#8|
Join Date: Mar 2012
Thanked 0 Times in 0 Posts
Wood Scrolling Nube
I was having the same problem, and was extremely frustrated. I just kept adjusting tensions, speeds, and my technique until I finally got somewhere.
I was also told that a cutting wax would help lubricate the blade when cutting, but found that when it came time for finishing, I had problems with my dye solutions skipping off of the wax.
Slow and easy is the key for me, at least until I get better with my technique. I was always forcing more wood into the saw blade than it could handle, so the wood would start burning or my blade would snap.
Since I slowed down, I have only snapped one blade, but that was my fault. My technique was flawed going around a really tight turn. I have already realized this skill will take me a little more time to try and get acquainted with, much less master.
|05-23-2012, 09:11 PM||#9|
Join Date: Jan 2012
Location: Owosso Mi.
Thanked 1 Time in 1 Post
i'm working on project that calls for small blades 2/0 and had some trouble at the start seems that my tension was too tight sat up the blade again and it seems to be alright hope this helps Ron
|Thread||Thread Starter||Forum||Replies||Last Post|
|Breaking blades||Fibonacci||Beginners Scroll Saw||3||11-05-2012 11:23 PM|
|Why are my blades breaking?||mawinz||Beginners Scroll Saw||5||10-20-2012 12:14 AM|
|breaking blades||swbbat||Tools and Blades||4||12-06-2010 09:01 AM|
|2/0 blades keep breaking||handibunny||Tools and Blades||24||09-22-2010 02:40 PM|
|? about blades breaking||Mr.J||Beginners Scroll Saw||11||12-27-2007 07:37 AM|