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Remove the wobble-wobble!

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Forum topic by Live4Brew posted 1352 days ago 923 views 1 time favorited 2 replies Add to Favorites Watch
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Live4Brew

27 posts in 1637 days


1352 days ago

Topic tags/keywords: truing arbor flange runnout runout run out trueing table saw wobble

Ok folks,

I just recently rebuilt a 1959 Unisaw (new bearings/link belt/motor/cleaning/etc), but the blade had as much wobble as my old Craftsman contractor saw and it was driving me nuts.

I checked the arbor for run-out using a dial indicator. It wasn’t too too bad in the .003ish range at the flange. My cuts didn’t look as perfect as I wanted though. So after much research as to the best method for truing the arbor, I came upon this: http://forum.woodenboat.com/archive/index.php/t-19523.html

I also came upon someone talking about truing the arbor flange here: http://woodgears.ca/saw_arbor/index.html

My flange was HORRIBLE. Someone had WAY overtightened the arbor nut and warped the flange. This was fixed as described in the second article supra. It took me quite a while to sand the flange flat, but well worth the trouble.

Truing the arbor was quite easy and fun to do. I just busted a piece of carbide off an old Freud blade that was collecting rust, locked it in some vicegrips, and sharpened it a bit with my Spyderco fine ceramic. Once I tilted the saw to 45 and raised the arbor to its highest position, I just very lightly touched the carbide tip against the arbor face while the saw was running (and blade removed!) (using lots of overhead lighting to see what I was doing) and milled it down till all high spots had been removed (I kept turning the saw off to see the progress).

Folks, I know you’ve probably looked into this before – I just wanted to write and say that it’s well worth the effort. My blade has zero wobble in it now and I see virtually no saw marks on my wood.

Seriously, give it a shot, you won’t be disappointed!


2 replies so far

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bobkberg

350 posts in 1678 days


#1 posted 1305 days ago

Great information! Thanks very much for sharing it.

-- Bob www.singularengineering.com - A sideline, not how I earn a living

View PurpLev's profile

PurpLev

8476 posts in 2253 days


#2 posted 1305 days ago

good find! I wouldn’t think of the flange.

FYI, 0.003 arbor runout seems excessive to me – good call on machining it down.

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

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