Super-Simple Fence Micro-Adjuster

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Project by SebringDon posted 11-08-2013 12:52 AM 5707 views 21 times favorited 11 comments Add to Favorites Watch
Super-Simple Fence Micro-Adjuster
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I’ve been wanting a micro-adjuster, but the ones for sale seemed expensive for the functionality, and the ones I had found plans for were fancy projects with t-track, dual fences, and the like. I knew there had to be a clean and simple way to get the same functionality without either paying an arm and a leg or spending two days in the shop. This is what I came up with.

Run a 3/8”-16 carriage bolt through a tee-nut in a scrap of plywood anchored to the side of the table. Make a place on the fence for the head of the carriage bolt to rest against, across the fence from the bit opening. Add a real handle to the other end of the bolt, instead of the acorn nut, which was all I had on hand.

Connect the fence and anchor for the bolt with a spring to maintain tension against the bolt head. My fence pivots on one end; if you have sliding fence you may have to make adjustments to the design.

Now turn the bolt 1 turn for each 1/16” adjustment you want, or a quarter-turn for 1/64”. It also makes sneaking up on a perfect fit easier and big bits you want to cut in several passes are made as simple as turning a knob between passes. Total cost: a spring and some other bits from the scrap pile and the hardware drawer.

I made mine removable for those times I use the table without the fence.

-- Don

11 comments so far

View Mark's profile


864 posts in 1813 days

#1 posted 11-08-2013 03:27 AM

Hellofagood idea. The spring is a excellent add on.

-- Mark

View 489tad's profile


3259 posts in 2850 days

#2 posted 11-08-2013 03:55 AM

Pretty slick.

-- Dan, Naperville IL, I.G.N.

View Ken90712's profile


17527 posts in 3027 days

#3 posted 11-08-2013 10:45 AM

That’ll work, well done.

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

View SebringDon's profile


95 posts in 1779 days

#4 posted 11-08-2013 01:21 PM

It gets the job done and was quick and simple to implement.

-- Don

View HuckD's profile


311 posts in 1553 days

#5 posted 11-08-2013 01:53 PM

Nice, simple and functional. Good job.

-- Visit my Youtube Channel:

View prospector45's profile


150 posts in 1569 days

#6 posted 11-08-2013 02:46 PM

Great idea. I am now headed to the shop to duplicate your design.

View Richard's profile


1912 posts in 2529 days

#7 posted 11-08-2013 08:30 PM

Just exactly what I needed , I had been over thinking how to do this after seeing some of the ones for sale.

View rackjabbit's profile


44 posts in 1746 days

#8 posted 11-10-2013 01:23 PM

Sweet thinking outside the box.

-- Once the dust settles, breath and behold the beauty of the wood.

View KelvinGrove's profile


1658 posts in 1751 days

#9 posted 01-04-2014 02:16 AM

Including this on the table I am building right now.

-- Tim P. Calhoun GA. If traffic is passing you on the right, YOU ARE IN THE WRONG DAMN LANE.

View oldnovice's profile


6433 posts in 3206 days

#10 posted 02-25-2014 05:02 PM

Good project, for better results in your shop!

I see that you are a believer in the KISS, Keep It Simple Stupid, principle!

A U.S. Navy acronym from the 1960’s!

The KISS principle states that most systems work best if they are kept simple rather than made complex; therefore simplicity should be a key goal in design and unnecessary complexity should be avoided. The phrase has been associated with aircraft engineer Kelly Johnson (1910–1990). Wikipedia

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

View ChipsCubed's profile


3 posts in 1253 days

#11 posted 07-12-2014 06:53 AM

The spring isn’t just an add on. It is an essential feature if you want accuracy. The Tee nut and bolt will have a lot of backlash. The spring takes up that backlash so the fence stays at the same place when the knob is turned to the same place.

This is extremely clever in it’s simplicity.

Paul A.

Hellofagood idea. The spring is a excellent add on.

- Mark

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