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Incra-style Tool for Miter Saw - Precision Cuts!

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Forum topic by wilschroter posted 10-16-2019 12:07 PM 1018 views 0 times favorited 11 replies Add to Favorites Watch
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wilschroter

111 posts in 1070 days


10-16-2019 12:07 PM

I’m looking for a freakishly accurate tool to help me make absolutely tiny incremental adjustments/cuts on a DeWalt compound miter saw. Incra seems to make a ton of tools for routers and table saws (I have one) but I’d like to be able to make micro adjustments on my miter saw.

I always have the same problem – “I just need to take a hair off this piece of work” and sit there guessing as to how much the kerf is going to shave off. The shadow blade guide is fine for the initial cut, but I really don’t get the accuracy I’m looking for on that final final final cut.

Any suggestions?


11 replies so far

View LittleShaver's profile

LittleShaver

598 posts in 1164 days


#1 posted 10-16-2019 12:48 PM

When I need to take off a gnat’s worth, I press the piece against the side of the blade while the machine is off, than raise the blade and make the cut. All blades and machines flex a bit, take advantage of it.

-- Sawdust Maker

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wilschroter

111 posts in 1070 days


#2 posted 10-16-2019 12:49 PM

I do that, but it feels like it isn’t quite as repeatable and crazy accurate like I’d like it to be.

View ibewjon's profile

ibewjon

1040 posts in 3338 days


#3 posted 10-16-2019 02:36 PM

I use a stop block, but I am not cutting long pieces. I think my old DeWalt RAS from the 50’s is a better tool than my modern DeWalt miter saw. I think the newer saw has more slop in it. More of a framing saw than a furniture machine.

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Rich

5001 posts in 1134 days


#4 posted 10-16-2019 02:41 PM

I’m curious why you need such freakish accuracy. First, if I’m sneaking up on a cut, I generally do what LittleShaver does. Either that, or just position the board so the teeth just bite the surface.

I use the Kreg Precision Trak & Stop Kit on my homemade extension wings. If I knew I needed to knock X thousandths off of a board that had been cut with the stop where it is (hasn’t been moved for another cut), I’d use feeler gauges between the board and the stop.

Another solution would be to build a stop with a screw. A 16 pitch apex screw will give you 1/64” per quarter turn. You could go with a finer pitch if you needed.

Those techniques will give you accurate changes in length from an initial cut. If what you’re referring to is the sort of repeatability that Incra systems provide, you can get their track systems in a variety of lengths and use them to build your own extension wing for your saw.

View Lazyman's profile

Lazyman

4113 posts in 1932 days


#5 posted 10-16-2019 03:33 PM

Are you talking about the length or the angle?

One thing you can try to make very small tweaks is sticking a paper or playing card shim between the workpiece and a stop block or the fence. Need a little more? Add more shims.

Note: I have not done this on a miter saw but I have for both the router table and table saw. As noted above, the flex that most MS have might not provide enough precision for it to work well.

-- Nathan, TX -- Hire the lazy man. He may not do as much work but that's because he will find a better way.

View Andre's profile

Andre

2840 posts in 2350 days


#6 posted 10-16-2019 03:37 PM

Shooting board and plane set to half a thou. ?

-- Lifting one end of the plank.

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Gene Howe

11875 posts in 3973 days


#7 posted 10-17-2019 12:25 AM



Shooting board and plane set to half a thou. ?

- Andre


Ya beat me to it. Exactly my method.

-- Gene 'The true soldier fights not because he hates what is in front of him, but because he loves what is behind him.' G. K. Chesterton

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Andre

2840 posts in 2350 days


#8 posted 10-17-2019 05:55 AM


Shooting board and plane set to half a thou. ?

- Andre

Ya beat me to it. Exactly my method.

- Gene Howe

Actually joking :) We are talking wood after al,l a thou of an inch LOL!

-- Lifting one end of the plank.

View Sark's profile

Sark

220 posts in 905 days


#9 posted 10-22-2019 11:52 PM

The Kreg Precision Fence has, as an option, a micro-adjuster, which I bought and never used. Incra, which I have never used, also has a micro-adjuster so you can dial in measurements in between the standard increments. Love the Kreg fence, easy to read cursor, repeatable and accurate.

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PCDub

152 posts in 788 days


#10 posted 10-24-2019 04:09 PM



One thing you can try to make very small tweaks is sticking a paper or playing card shim between the workpiece and a stop block or the fence. Need a little more? Add more shims.
- Lazyman

This!

View JackDuren's profile

JackDuren

506 posts in 1504 days


#11 posted 10-24-2019 04:43 PM

I’m still confused at how one is going to set up a fence to accurately to cut a hair off if one can’t get the hair off without a setup to start with.

When i look down on a biesemeyer stop on a miter saw i only move it off the line according to how much i need..

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