Is is possible to cut a straight line


Is is possible to cut a straight line

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jyarber
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I just picked up the Moto-saw to use cut the shape for a derby car. I have found it impossible to cut a straight line with the saw. I am using the M51 blade, with the speed set to 6 on a 3/4" piece of wood. I let the saw come up to speed and I slowly apply the wood to the blade while holding down the foot. about 1/8" into the wood, it will being to cut to the side off the line. I will pull the wood back out and slowly try again with the same issues. I have also noted when the happens it appears the blade is bending. I pulled the wood out, powered of the unit removed, reinserted and replaced the blade twice but the issue remains. I have used smaller pieces of wood with the same issue. Has anyone else experienced this same issue? If so, how have you been able to resolve it?
sdudley
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jyarber (3/10/2013)
I just picked up the Moto-saw to use cut the shape for a derby car. I have found it impossible to cut a straight line with the saw. I am using the M51 blade, with the speed set to 6 on a 3/4" piece of wood. I let the saw come up to speed and I slowly apply the wood to the blade while holding down the foot. about 1/8" into the wood, it will being to cut to the side off the line. I will pull the wood back out and slowly try again with the same issues. I have also noted when the happens it appears the blade is bending. I pulled the wood out, powered of the unit removed, reinserted and replaced the blade twice but the issue remains. I have used smaller pieces of wood with the same issue.Has anyone else experienced this same issue? If so, how have you been able to resolve it?




Scroll saw blades naturally tend to follow the wood grain and therefor make it difficult to cut a straight line. Yes the blades bend and flex because these saws were designed for cutting shapes and doing very intricate detail fret work.

Straight lines are not impossible but perfectly straight lines are impossible. The best answer is that you need to practice.

Here is a link to a video that should help you when trying to cut straight lines:



http://www.stevedgood.com/school/video0006.html



Good luck,



sdudley
JustinR
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I am having the same issue, however, I'm not cutting wood. I'm trying to cut letters out of old hard back books, and within the first inch of my cut, the blade is veering off to the left. SInce I'm cutting a book, not wood, there should be no grain to follow. After having this problem with the books, I tried a small piece of wood and had the same issue. It followed the same curve to the left, whether I started with the grain or against the grain. Also, if I stop and look at the blade while it's in its curve, you can see that the blade itself is physically pulled to the left of the cutting surface. It's not just moving the material in a curve motion, the blade itself is bending, and not staying straight up and down. No matter how slow I go or how much pressure I apply to the material to keep it for veering left, it always does it. Any clues on how to correct this?



For reference, here is a site that shows the process of cutting letters out of books:

http://themerrythought.com/diy/diy-book-letters/



Thanks!

Justin
sdudley
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JustinR (1/20/2014)
I am having the same issue, however, I'm not cutting wood. I'm trying to cut letters out of old hard back books,...

For reference, here is a site that shows the process of cutting letters out of books:

http://themerrythought.com/diy/diy-book-letters/



Thanks!

Justin




Cool idea with the books! Judging from the pictures on your site you are not using a Dremel MotoSaw, which I would not recommend anyway since the books seem pretty thick.

Whatever the case, scroll saws were not designed for straight line cuts and the blades themselves tend to make the saw cut at an angle. For a much better explanation of this, please see the link I posted in my previous comment. There is some very good information on how to cut straight lines with a scroll saw. And yes, the blades are very thin so they will naturally bend while cutting. The best way to prevent this is to work slowly and not put too much pressure on the blade. If you find this to still be a problem, you might consider using a band saw for the thicker books.



Good luck, and keep up the good work!


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