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Three key factors to successfully cutting clean miters:
1 – Well tuned saw. Doesn’t matter how expensive your saw is, as long as it’s aligned properly
2 – SHARP blade. This is critical. If the blade isn’t sharp, it’ll overheat and deflect and ruin the cut. I made a video on how I sharpen my own blades:
3 – Zero clearance insert, mostly for safety sake. The offcuts from a bevel cut are wedge shaped and if one gets jammed in an open gap next to the blade, kickback can result.
I like to recut my miters even if they fit well on the first pass. That reduces the stress on the saw and results in a cleaner cut when using a sharp blade. Start with parts that are slightly oversized and fine tune the fit as shown in the video.
On September 26th, with a Master of Architecture Degree from Harvard University, Frank Howarth from The Makers Mob will be launching a new woodworking design series. In this 4 week woodworking series Frank will cover everything that you need to know to understand the fundamentals of woodworking design.

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Project build article:

How To Sharpen A Saw Blade

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