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Microadjuster for Routertable Fence

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Project by Grulgor posted 04-07-2020 01:23 PM 855 views 6 times favorited 9 comments Add to Favorites Watch

As moving the fence in accurate increments is a difficult task on my self-made routertable I informed myself about potential solutions for this issue out there. On my web research I found a commercially available jig called “microadjuster”, what exactly solves my problem. So I adapted the concept to make it feasible on my routertable. That’s the design I figured out.
It actually works very well. The adjustable range of the microadjuster is from 11 – 38.5mm.
The cool thing I learned in this project is that a M6 thread has a thread pitch of exactly 1mm. This means by half a turn of the knob the fence moves by exactly 0.5 mm.





9 comments so far

View observer100's profile

observer100

467 posts in 1847 days


#1 posted 04-07-2020 01:37 PM

Very nice! I always like to hear about items pertaining to accuracy.

-- Seeing is believing.

View therealSteveN's profile

therealSteveN

5583 posts in 1311 days


#2 posted 04-07-2020 03:28 PM

“The cool thing I learned in this project is that a M6 thread has a thread pitch of exactly 1mm. This means by half a turn of the knob the fence moves by exactly 0.5 mm.”

That should allow you to sneak up on any set up. Always a good thing.

Thanks for posting.

-- Think safe, be safe

View moke's profile (online now)

moke

1540 posts in 3513 days


#3 posted 04-07-2020 04:26 PM

Very creative and useful, good job!

-- Mike

View LittleBlackDuck's profile (online now)

LittleBlackDuck

4480 posts in 1557 days


#4 posted 04-07-2020 08:33 PM

Love it Grukor... I am a great fan of micro adjusters as I continually struggle with “free handl” adjusters by overshooting the mark, bringing back only to overshoot again.

One question. Have you considered a spring or some return mechanism so you can make if a two way micro adjuster… or does it already cater for that.

-- If your first cut is too short... Take the second cut from the longer end... LBD

View Grulgor's profile

Grulgor

45 posts in 599 days


#5 posted 04-07-2020 09:14 PM


Love it Grukor... I am a great fan of micro adjusters as I continually struggle with “free handl” adjusters by overshooting the mark, bringing back only to overshoot again.

One question. Have you considered a spring or some return mechanism so you can make if a two way micro adjuster… or does it already cater for that.

- LittleBlackDuck


Sure, there is a thread inside the fixed part, so by turning in one direction it pushes the fence, while turning in the other direction it pulls the fence. Hope I expressed myself understandable..

View LittleBlackDuck's profile (online now)

LittleBlackDuck

4480 posts in 1557 days


#6 posted 04-07-2020 09:40 PM



Sure, there is a thread inside the fixed part, so by turning in one direction it pushes the fence, while turning in the other direction it pulls the fence. Hope I expressed myself understandable..
- Grulgor

Cool… “love” it even more!

-- If your first cut is too short... Take the second cut from the longer end... LBD

View Peteybadboy's profile

Peteybadboy

1870 posts in 2686 days


#7 posted 04-08-2020 10:20 AM

Very interesting, do you think it could be adapted to a table saw? (thinking mag switches) Does it “pull” as well as “push”?

-- Petey

View Grulgor's profile

Grulgor

45 posts in 599 days


#8 posted 04-08-2020 11:23 AM

Let’s see if this works. It’s the first time I try to embed something.

My top secret ‘plan’. it does the push as well as the pull. Unfortunately I don’t have a table saw, but I don’t see any reason why it should not be adaptable to a table saw fence.

Part ‘1’ has a threaded insert and two aluminium tubes, that accomodate the aluminium rods from part 2, so they can glide on the tubes.
Part ‘2’ has two aluminium rods press fitted, a smaller aluminium tube that lets the threaded rod rotate freely and two nuts that lock the part 2 to the threaded rod.

Anybody knows how to embed a video? is this possible without uploading it to youtube?

Here a link to a video which shows how 20 half-turns result in 10mm offset.

View Jim Jakosh's profile (online now)

Jim Jakosh

24556 posts in 3842 days


#9 posted 04-08-2020 02:25 PM

Very nice adjuster. I made one similar and mine would jam because of the weight of the fence so I went with a dial indicator from the front side.

cheers, Jim

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

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