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Automatic Miter Saw fence

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Project by corydoras posted 04-28-2018 08:37 PM 1434 views 5 times favorited 13 comments Add to Favorites Watch

Automatic Miter Saw Fence Stop

I built this automatic fence stop for my miter saw station a couple of years ago.
It was built from salvaged parts only.

I am lucky to work in a field that has some dumpster diving opportunities

On this project I used a 2000mm long linearrail w/bearings, a servo motor and driver, some loose bearings, an AT10 belt an pulley setup (no backlash), an old discarded laptop with win xp, and a working touch monitor from the dumpster.
The only thing I purchase for this project was the 5 axis cnc driver board and a stepper driver off ebay at a total cost of aprox 10 usd.

I have a video on my youtube channel showing it in action, that you can check out in the bottom of the page.

Here is an overview of the system, with the custom interface shown:
I built the operating screen on the base of the open software mach 3, made for cnc.
I fitted my own functions, and graphics.

To use it it is just a matter of punching in the desired length of cut, and the fence will move to the correct position.
It also has the option to use a cutlist, containing multiple cut dimensions.

This is a closeup of the linear rail and belt and pulley system.
It is hidden under a cover normally.

There is a homing switch to calibrate the system

Each end of the rail has double bearing seated shaft and pulley.

The servomotor i mounted under the bench. Because this is a closed loop system, meaning it has position feedback,
it does not matter if you bang the fence, it will always get back to position.

I made a setup to check the accuracy with a dial indicator ( if you want to see more from the test, and its repeat-ability, check out the video

Here is a video showing it in use, and explaining a little more how it works:


View on YouTube

-- ->Growing old is mandatory, Growing up is optional-<





13 comments so far

View swirt's profile

swirt

3170 posts in 3119 days


#1 posted 04-28-2018 09:28 PM

Wow, that is seriously cool. Nice job.

-- Galootish log blog, http://www.timberframe-tools.com

View woodchuckerNJ's profile

woodchuckerNJ

1294 posts in 1781 days


#2 posted 04-28-2018 09:53 PM

Excellent job on that.

-- Jeff NJ

View doubleDD's profile

doubleDD

7705 posts in 2190 days


#3 posted 04-28-2018 11:33 PM

Well done. Maybe it will be an option someday on a new saw.

-- Dave, Downers Grove, Il. -------- When you run out of ideas, start building your dreams.

View bushmaster's profile

bushmaster

3238 posts in 2430 days


#4 posted 04-29-2018 02:20 AM

Totally amazing. multi skilled person.

-- Brian - Hazelton, British Columbia

View tyvekboy's profile

tyvekboy

1808 posts in 3160 days


#5 posted 04-29-2018 02:40 AM

Very cool recycling of parts. A little overkill on the accuracy but still cool. Makes the grade to become one of my FAVORITES.

If you didn’t dumpster dive, could you guess at how much it would cost to build it?

Wish I knew as much about electronics and all that stuff as you do. I just make sawdust. lol

-- Tyvekboy -- Marietta, GA ………….. one can never be too organized

View woodbutcherbynight's profile

woodbutcherbynight

5559 posts in 2556 days


#6 posted 04-29-2018 03:11 AM

One heck of a set up, nice work.

-- Live to tell the stories, they sound better that way.

View corydoras's profile

corydoras

134 posts in 2644 days


#7 posted 04-29-2018 10:52 AM



Wow, that is seriously cool. Nice job.

- swirt

Thank you very much.

-- ->Growing old is mandatory, Growing up is optional-<

View corydoras's profile

corydoras

134 posts in 2644 days


#8 posted 04-29-2018 10:52 AM



Excellent job on that.

- woodchuckerNJ

Thanks Jeff

-- ->Growing old is mandatory, Growing up is optional-<

View corydoras's profile

corydoras

134 posts in 2644 days


#9 posted 04-29-2018 10:53 AM


Well done. Maybe it will be an option someday on a new saw.

- doubleDD

Thanks Dave, I have started tinkering with the same option for my tablesaw, fence, blade height and tilt on servo motors

-- ->Growing old is mandatory, Growing up is optional-<

View corydoras's profile

corydoras

134 posts in 2644 days


#10 posted 04-29-2018 10:54 AM



Totally amazing. multi skilled person.

- bushmaster

Thanks for the kind feedback Brian

-- ->Growing old is mandatory, Growing up is optional-<

View corydoras's profile

corydoras

134 posts in 2644 days


#11 posted 04-29-2018 10:57 AM



Very cool recycling of parts. A little overkill on the accuracy but still cool. Makes the grade to become one of my FAVORITES.

If you didn t dumpster dive, could you guess at how much it would cost to build it?

Wish I knew as much about electronics and all that stuff as you do. I just make sawdust. lol

- tyvekboy

Thank you Sir. Hard to say. If all parts was to be purchased new, it would not make sense. There are commercial ones available at aprox 3000usd. But one could build a light version with stepper motors and non branded hardware for maybe under 1000 usd?

-- ->Growing old is mandatory, Growing up is optional-<

View corydoras's profile

corydoras

134 posts in 2644 days


#12 posted 04-29-2018 10:57 AM



One heck of a set up, nice work.

- woodbutcherbynight

Thank you

-- ->Growing old is mandatory, Growing up is optional-<

View helluvawreck's profile

helluvawreck

32083 posts in 3014 days


#13 posted 04-29-2018 05:54 PM

You have done a very nice job on this automatic saw fence.

-- helluvawreck aka Charles, http://woodworkingexpo.wordpress.com

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