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Checking a shop made miter sled for accuracy

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Blog entry by Don "Dances with Wood" Butler posted 666 days ago 2026 reads 1 time favorited 8 comments Add to Favorites Watch

Using the traditional angle checking tools, such as drafting triangles and squares, still is a good place to start when building tablesaw sleds, especially miter sleds.
I don’t trust miter guages to stay on angle throughout a whole job. A picture frame, for example, has 8 miter cuts and just a small bump on a common miter guage can cause it to lose its setting between cuts. So I rely on fixed, shop made miter sleds. But making sure they’re exactly at the desired angle is critical.
So here’s a video I made to show how I do it. The sled I used for the video is one-tenth of a degree offf.

I got the idea when I saw another woodworker show how he sets his adjustable miter guage. I use a Wixey Digital Angle Guage to do it.

Here;s the link to my YouTube video:
http://www.youtube.com/watch?v=ldqCQTVP-a8

Next time I want to make a short video that shows my method for checking the table saw fo accuracy.

ddwwb

-- The best things in life aren't THINGS.





8 comments so far

View CharlieM1958's profile

CharlieM1958

14865 posts in 2390 days


#1 posted 666 days ago

Don, maybe I’m missing something, but I don’t see where that method proves anything. A perfect 45 degree reading would mean nothing if the base was not square, or if the runner was out of square with the base.

It seems to me like a better way would be to zero your gauge on the runner, because what really matters is the relationship between the fence and the runner, right?

-- Charlie M. "Woodworking - patience = firewood"

View Vince's profile

Vince

671 posts in 1601 days


#2 posted 666 days ago

I think he trued the boards edge after installing the runner, which would make the runner and board (base) square to each other. Then you set the miter with the wixey.

-- Vince

View CharlieM1958's profile

CharlieM1958

14865 posts in 2390 days


#3 posted 666 days ago

Ahhh…that explains it.

-- Charlie M. "Woodworking - patience = firewood"

View sandhill's profile

sandhill

1979 posts in 2096 days


#4 posted 666 days ago

Good video Don. I do the same thing with all my jigs that require angle cuts that are repeatable.

View NormG's profile

NormG

2580 posts in 1176 days


#5 posted 666 days ago

great idea

-- Norman

#6 posted 665 days ago

charlie,
Yes,
The edge is trued by simply passing it through the cutpath after the runner is installed. That makes it perfectly parallel to the runner.

ddwwb

-- The best things in life aren't THINGS.

View CharlieM1958's profile

CharlieM1958

14865 posts in 2390 days


#7 posted 665 days ago

Thanks, Don. I should have known better than to question you. :-)

-- Charlie M. "Woodworking - patience = firewood"

View rodman40's profile

rodman40

147 posts in 499 days


#8 posted 434 days ago

Don, what happen to the video? when I click on the link Youtube saids you closed your account, do you still have the video? would like to see it because I’m always looking for good advice in woodworking jigs. rodman40

-- Rodman

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