LumberJocks

Incra LS for router...is 1/32" positioning really all that?

  • Advertise with us

« back to Power Tools, Hardware and Accessories forum

Forum topic by HarveyDunn posted 01-16-2014 06:31 PM 940 views 1 time favorited 37 replies Add to Favorites Watch
View HarveyDunn's profile

HarveyDunn

286 posts in 484 days


01-16-2014 06:31 PM

Topic tags/keywords: question

I’m going to buy or build a new router table. I’m interested in making keepsake boxes and so naturally the Inca ads caught my eye. I’m totally unfamiliar with their products, but have made a pot of coffee and am going to work my way through their videos.

I have a question already: they say their LS system positions the fence “at a precise multiple of 1/32”.

Is that really all that when it comes to joinery?

I’ve seen the Mark Duginske shop-made fence for the bandsaw and table saw (I suppose it could work on a router table as well) that uses post-it-note shims to adjust the position by 0.008” at a time (1/32” = 4 post it notes).

Is that just overkill?


37 replies so far

View PaulDoug's profile

PaulDoug

629 posts in 456 days


#1 posted 01-16-2014 06:41 PM

I don’t know that it has to be exactly that precise, certainly can’t hurt, but there is also the repeatability. If you move the fence you can come back to the exact measurement quickly and easily. I have their positioner jig on my router table (the cheaper one) and I really like it. I have their table saw fence and I really like it.

-- “We all die. The goal isn't to live forever; the goal is to create something that will.” - Chuck Palahniuk

View JustJoe's profile

JustJoe

1554 posts in 791 days


#2 posted 01-16-2014 06:46 PM

It’s the repeatability. with 1/32 steps and standard router bits it’s exact., no need for shims.
And if you buy a cheap bit that is supposed to be .5, but it’s only .4992, instead of pulling out a post-it note you have a dial on the incra that makes the adjustment for you.

-- This Ad Space For Sale! Your Ad Here! Reach a targeted audience! Affordable Rates, easy financing! Contact an ad represenative today at JustJoe's Advertising Consortium.

View Loren's profile

Loren

7826 posts in 2401 days


#3 posted 01-16-2014 06:49 PM

It’s a useful thing for dovetails and box joints in that you
can get bits that are just the right size to make a great
fit combined with the 1/32” increments.

I had the table saw fence and I used it once to make a
big box joint jig to cut joints with my router using a
5/8” guide bushing and a 1/2” router bit. One could
make dovetail jigs for large carcases that way too.

I suggest making the Duginske fence for your band
saw and making the band saw dovetail jigs too. I
did it when I read his book and the dovetails came
out nicely.

-- http://lawoodworking.com

View RockyTopScott's profile

RockyTopScott

1151 posts in 2231 days


#4 posted 01-16-2014 06:51 PM

When I sold my old table saw I had the Incra TS. I never found the need for that kid of accuracy on the tablesaw so my new saw has the factory fence.

I don’t know that I would ever part with my Incra Router fence for the same reason Joe indicates.

-- “When you want to help people, you tell them the truth. When you want to help yourself, you tell them what they want to hear.” ― Thomas Sowell

View brtech's profile

brtech

714 posts in 1675 days


#5 posted 01-16-2014 07:00 PM

What an Incra does is give you PRECISE 1/32”nds. They are accurate within a thou or two. What it can’t do is give you a setting BETWEEN 32nds.

There are times when you need more precision than 1/32”, but you usually don’t need to have settings more fine than that (and lots of folks would say sixteenths are enough).

View HarveyDunn's profile

HarveyDunn

286 posts in 484 days


#6 posted 01-16-2014 07:19 PM

Thanks all.

Anyone used the LS “Super System” as an edge jointer?

View RockyTopScott's profile

RockyTopScott

1151 posts in 2231 days


#7 posted 01-16-2014 07:21 PM

brtech, I thought the adjustment knob moved the fence one thousands with each click?

-- “When you want to help people, you tell them the truth. When you want to help yourself, you tell them what they want to hear.” ― Thomas Sowell

View JustJoe's profile

JustJoe

1554 posts in 791 days


#8 posted 01-16-2014 07:22 PM

Yes. It’s incredibly smooth, takes about 30 seconds to set up (just loosen a couple screws and move one fence one notch). You can use it on pieces way too short to use on a regular 8” jointer and the finish is slick.

-- This Ad Space For Sale! Your Ad Here! Reach a targeted audience! Affordable Rates, easy financing! Contact an ad represenative today at JustJoe's Advertising Consortium.

View HarveyDunn's profile

HarveyDunn

286 posts in 484 days


#9 posted 01-16-2014 07:25 PM

brtech, in the video they say the clicky knob positions between 32’s…one thousandth per click.

Or were you saying that you can save a position between 32’s and return to it?

View HarveyDunn's profile

HarveyDunn

286 posts in 484 days


#10 posted 01-16-2014 07:26 PM

Thanks JustJoe, that is good to know…I’ve kind of decided I’m going to do without a jointer and thickness planer for now.

View JustJoe's profile

JustJoe

1554 posts in 791 days


#11 posted 01-16-2014 07:33 PM

I think some people confuse repeatability with accuracy.
The normal steps are 1/32. That is the repeatability. I have never needed repeatability less than that (meaning make a cut X distance from the edge, move Y distance and make another one, move Y and do it again.) I’ve never had to make box joints that were 7/64 or 27/168th apart from each other. Using standard router bits, I don’t see how it would even work unless someone’s found a source for some odd size bit that instead of being 1/4 is 17/64. If you’re doing something by hand and you make your first cut a bit off, sure you might need to make the mating piece 1/128th bigger/smaller to compensate, but that’s not what is going on with the router setup.

For accuracy, that is how close the actual cut comes from where you want it to be. If you measure out 3/16th from the edge of the board then with the incra your cut will be 3/16th, +/- 1/1000th. And if that 1/1000th is life or death, you’ve got the fine adjustment knob. So you make that cut 3/16th from the edge of the board and you don’t need a ruler – you can trust it. You can then move your fence over 7/32, 3-3/8, whatever measurement you like in 1/32 increments and make another cut without need to measure and you can still trust that it will be within 1/1000th of where you want it. And then, you can move the fence back to zero, drop in another board and make the same cuts in the exact same place. (back to repeatability)

-- This Ad Space For Sale! Your Ad Here! Reach a targeted audience! Affordable Rates, easy financing! Contact an ad represenative today at JustJoe's Advertising Consortium.

View PurpLev's profile

PurpLev

8476 posts in 2401 days


#12 posted 01-16-2014 07:43 PM

I have that fence on my router table. I rarely use it for joinery, but the repeatability it provides and the ease of getting that working is as smooth and easy as can be. accuracy is to within .001, but for quick settings it is set for 1/32” steps

-- ㊍ When in doubt - There is no doubt - Go the safer route.

View wbrisett's profile

wbrisett

147 posts in 1101 days


#13 posted 01-16-2014 08:05 PM

I’ve had the Incra system on my table saw for quite some time. Recently I decided it was time to figure out how to get rid of my portable router table and fit a full-size table into my limited space. Well… I didn’t, what I did do though was replace a wing on my saw, buy the super fence and now I have the best of all worlds. I reduced space and get a full size table out of the deal.

Everybody here has already spoken about the high points, so I won’t touch those. The only downside if you get the super fence to go on your saw, is you do have to switch out the Wonderfence when you need to saw. Can’t tell you how many times I thought I had everything cut, then discover I’m missing something I forgot to cut. Then I have to disassemble the fence and switch it over for sawing use. It’s really not all the hard, just one more adjustment that has to be done…. setup, tear down, setup, tear down. ;)

View HarveyDunn's profile

HarveyDunn

286 posts in 484 days


#14 posted 01-16-2014 08:11 PM

wbrisett, I’m a bit confused. Any chance you could show me a picture? Are using one Incra system for both the tablesaw and the router?

View retfr8flyr's profile

retfr8flyr

260 posts in 422 days


#15 posted 01-16-2014 08:21 PM

I also have the Incra system with my router table mounted as a wing in my table saw. I love the accuracy and repeatability the Incra gives me. I have mine mounted a little different then standard. I kept the cast iron wing in the right side if my Jet saw and mounted the router table backwards at the end of the wing. I just flip the fence around to use the router and I have the width of the table saw wing to use, if needed. Mounted this way I can work around the end of the table easily, it’s almost like having a separate router table setup.

-- Earl

showing 1 through 15 of 37 replies

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com

Latest Projects | Latest Blog Entries | Latest Forum Topics

GardenTenders.com :: gardening showcase