You upgrade to the LR4 where this isn’t a problem anymore 
On a serious note, I think your glue idea should be just fine. If it worked last time no reason it wont work this time
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OK. I managed to cut a box and it fits more or less. I suspect it’s not ideal because I didn’t resquare machine after changing core and retightening? Do I have to repeat whole process?
Box is not glued, just put together. It was pretty tight fit and I’m happy about it:)
Please take a look and let me know what you think is wrong now 
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Definitely a major improvement!
Did you use a finishing pass? That looks like my first boxes where I didn’t use one.
Another thing might be the belt tension, have had problems with it before as well.
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I did use 0.3 finishing pass.
How tense belts should be?
Not too loose, not too tight… 
Yours might be a tad loose.
I will try that today
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I see some “steps” on the sides of the cut tabs, which would indicate that you need to tram the router in the new core. This might also account for other errors as well.
Tramming is making sure that the tool is exactly perpendicular to the plane of the machine. Lots of threads on how-to on the forum.
I’d bet that once that’s done, you’ll find that the machine makes parts that fit even better.
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Thanks, Dan! I will tram the router in next step! I’ve done it in the past, so know the drill
In the meantime I have made another little box with belts tensioned “Not too loose, not too tight” 
Left-Right of the photo is X.
Next stop, tramming.
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I give up for today. Can’t get it easily trammed.
But I thought about what you said and I agree - I can see steps as well, however… I added full depth finishing pass of .3 - shouldn’t this clear any steps anyway? Or maybe I did something wrong in Estlcam?
And tool:
I believe @Michael_Melancon had an easy way to tram the LR3… I will see if I can find it
Edit: Found it…
beat you
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Not sure about Estlcam V12 (I still use V11) but don’t you have to specify the tool for the finishing pass?
that aside, 0.3mm isn’t very much, and it doesn’t take much tram adjustment to be more than that amount. Those steps mean that there is definitely some of that happening.
Also there is still a slight amount of wobble on the X lines, it is possible that the core is still very slightly loose, or possibly the router is moving slightly in its mounts. You definitely don’t want to overtighten the router mounts, though.
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I think if you put a finishing amount without a tool, it leaves that much extra.
Pretty sure it oversizes or undersizes based on whether you enter a negative or positive value. If you define the tool (even if its the same tool) then it acts as a finishing pass.
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Hi guys,
so I’ve been playing with those finger joints more, and my last try was to use upcut bit and then do the finishing pass of 0.5 with compression bit. I thought it’s going to be absolutely-super-extra-pro (ultimate too). Problem is now - it’s so ideal that fit is so tight I had to hammer it in place and it wasn’t easy too!
What settings and where (and on which stage of work) I need to change to make it less tight?
My files come from boxes.py and I’ve set burn correction (in mm) to 0.0. Is that wrong?
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If your compression bit is not exactly what you have it set as in estlcam it can cause that some.
do you mean I should measure EXACT size of bit and input that? Or cut line and measure width of that line?
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