olddust1 Posted February 4, 2017 Report Share Posted February 4, 2017 Why do blades break about 1" from bottom clamp? I have an EX 21. John Old Dust Quote Link to comment Share on other sites More sharing options...
Dan Posted February 4, 2017 Report Share Posted February 4, 2017 I find most of my blade break problems are on the bottom. I don't break many though. My guess is excessive heat. It could also be tension or technique. Quote Link to comment Share on other sites More sharing options...
Lucky2 Posted February 5, 2017 Report Share Posted February 5, 2017 John, what type and size of blades are you talking about? How is it breaking, is it any time or is it when you're cutting a turn? Basically, what are you doing that causes the blades to break? Also, what is it that you're cutting, plywood or a solid wood and how thick is the stock? Len Quote Link to comment Share on other sites More sharing options...
Ron Johnson Posted February 5, 2017 Report Share Posted February 5, 2017 Possibility over tightening the tension, set screw needing adjustment, blade allignment out, too much force on blade while cutting, stock thickness, speed, wrong blade type. Just a few thoughts re: blades breaking. Quote Link to comment Share on other sites More sharing options...
munzieb Posted February 5, 2017 Report Share Posted February 5, 2017 My blades tend to break on tight turns or when I push too hard. Some time it happens when I'm thinking, "damn, the cutting is going slow, this blade must be getting dull, I need to change it." within seconds, TWANG, it's broke! Funny how that happens! UncleApple and banderson 2 Quote Link to comment Share on other sites More sharing options...
CharleyL Posted February 5, 2017 Report Share Posted February 5, 2017 (edited) There are many things that can cause blade breakage. We need to know more. 1. How fast are you running the saw? - overheating the blade causes loss of temper and/or brittle spots in the blades. 2. Is the blade too large for the turns you are trying to make? - Binding the blade can break the blade. 3. Adjustment of the blade clamp - a miss adjusted set screw in the blade clamp or clamping the blade while the clamp is tilted front/back angle will result in bending the blade as you increase the tension 4 Poor quality blade - not all blades or brands are equal. There are sometimes defects in even blade bundles from the best manufacturers. Expect to occasionally break blades, for no apparent reason. Sometimes you just find one with a defect in it. 5. Being too aggressive - scroll sawing is a slow process. Only very tiny amounts are being removed with each stroke of the saw. Let the saw do the work and just feed the wood forward enough that it keeps making progress. This is a hobby that takes great patience. Trying to go faster makes errors and breaks blades. Strive for quality and let the project end whenever it's finished, today, tomorrow, or next week. Scroll sawing is a Journey, not a Destination. Do it as good as you possibly can and you will be very proud of it when you finish. I hope this helps. Charley. Edited February 5, 2017 by CharleyL Quote Link to comment Share on other sites More sharing options...
NC Scroller Posted February 7, 2017 Report Share Posted February 7, 2017 To add to Charley's list is your blade dull and worn out. Scroll saw blades are meant to be a disposable commodity. Depending on what materials and thickness blades will last between 5 and 30 minutes. While they may continue to cut longer they are not cutting effectively and they are creating extra heat from the friction and you tend to push harder and then BANG. don watson and CharleyL 2 Quote Link to comment Share on other sites More sharing options...
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