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precision table saw fence fixture

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Project by jlb posted 05-30-2013 06:57 AM 2476 views 25 times favorited 6 comments Add to Favorites Watch

Once I got the fence running smoothly, I needed to have a more accurate way to set the fence. The fixture uses two wood blocks. The 1st block has a 5/16”x18 bolt with inserts in the block. This block moves the fence in or out depending on which side of the fence it is placed. The second block has a 1-2” dial indicator mounted to the second block of wood. This determines the actual movement in thousands of an inch. Note that both blocks have rare earth magnets attached to the bottom of both blocks to hold them from moving. To use this fixture you set the fence close to the final dimension and lock the fence. Next place the block with the bolt end against the fence. Next place the end of the dial indicator with the travel about half the way on the dial. Then zero the dial. Now release the lock on the fence,turn the bolt clockwise while watching the dial on the indicator until you reach the desired distance. finally make the cut. This sounds complicated until you have done it a few times. Comments are always welcome. Thanks for looking.

-- Jim, Ca, jimlbenson@comcast.net





6 comments so far

View Woodstock's profile

Woodstock

234 posts in 1940 days


#1 posted 05-30-2013 07:08 AM

I’ve been looking for something like this for years. Thanks.

-Dave

-- I'm not old. Just "well seasoned".

View Ken90712's profile

Ken90712

14922 posts in 1841 days


#2 posted 05-30-2013 09:27 AM

Really nice and cleaver. Thx for sharing…..

-- Ken, "Everyday above ground is a good day!"

View Jim Jakosh's profile

Jim Jakosh

11423 posts in 1757 days


#3 posted 05-30-2013 11:44 AM

I love it, Jim. That makes the movement of the fence so accurate you don’t have to keep making test pieces of critical parts!!!!!
Were you a toolmaker,too!!...........................Jim

-- Jim Jakosh.....Practical Wood Products...........Learn something new every day!! Variety is the Spice of Life!!

View lazyoakfarm's profile

lazyoakfarm

144 posts in 1449 days


#4 posted 05-30-2013 12:57 PM

Great idea and great job. since I’m not that clever, I had to buy an Incra and I love it. set it and forget it.

View revwarguy's profile

revwarguy

125 posts in 553 days


#5 posted 05-30-2013 01:13 PM

Very interesting. Do you find those magnets to be strong enough to not worry about slipping? Where did you get them? Thanks for posting.

-- "72.6 per cent of all statistics are made up on the spot." - Steven Wright

View oldnovice's profile

oldnovice

3759 posts in 2020 days


#6 posted 05-30-2013 06:41 PM

I like the use of the magnets … most TS tops are cast iron and magnets make very good use of that property. With what you have done precise setups can be logged and reused at a future time to duplicate a part!

I am going to adapt this to my cast iron RT top as it could use a little more precision too!

-- "I never met a board I didn't like!"

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