Incra T-Rules: precise but offset?

[squall_line]

Filing the end off the ruler would have no effect since the ruler is attached to the T-bar with holes.  You'd have to elongate the holes .25mm instead.

 

[monkeyjoe]

Filing the end off the ruler would have no effect since the ruler is attached to the T-bar with holes.  You'd have to elongate the holes .25mm instead.

I think they meant filing off the end that seats against the lip of the cross bar, assuming there’s enough slop in the screw holes.

 

[Mini Me]

I also have a couple of Incra T-rules and find them excellent.
I have not noticed the offset but actually I hope this is true for mine also.
Then, if I cut the pencil line away I know it will be accurate. Brilliant when used together with a tracksaw. I find it easier to cut to the left of the pencil-line than hitting straight in the middle.

I agree entirely, it then becomes a very accurate method of cutting to an exact size. A vernier marking knife is available from Ebay and other sources which can be slightly more accurate.
https://www.ebay.com.au/itm/2848932...UL0ShOpeTpthqw%3D%3D|ampid:PL_CLK|clp:2047675

 

[smorgasbord]

FWIW, I found this old video:=150

Which clearly shows the first hole being halfway filled by the wood:
[attachimg=1]

So, it used to be OK, but he does talk about checking squareness and then tightening the knobs down.

 

[monkeyjoe]

Update:

I was able to verify the accuracy of all my imperial rules using Kreg 1/4” setup bars and also using the Incra guaranteed square. Only the metric ones have issues.

I discussed everything with Mark at Incra and they are sending me out replacements for the metric rules! Really great customer service. He also clarified that the lines are indeed supposed to be centered on the measurement marks, i.e., not cutoff lines like I was experiencing.

I’ll report back once I get them but it seems at this stage like I just got a bad batch. One potential source of the error is the aluminum cross bar being out of square. Mark mentioned that that can happen with the extruded aluminum, and sure enough the bars are out of square on my two metric rules.