Reply by DrDirt

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Posted on Adjusting jointer, what straight edge to get?

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4615 posts in 4662 days

#1 posted 09-12-2016 02:59 PM

Remember we are working with wood, not metal, so +/- .0001 per foot is not needed.

If you have a surface that you know is flat – like your Tablesaw surface. You can use just a 24 inch steel ruler, set it on edge, and if you cannot get a .001 Automotive feeler guage under it.. it is PLENTY flat for looking at coplaner.

I use a flat wood block with a pen mark for setting my knives – - good video by Sandor Nagyszalanczy on doing that. You just set the block on and measure how far the blade ‘drags’ the wood block.

The one-way set-up is more “precise” – but the dial indicator is doing the same thing. You just need a tip with the 1/4 inch flat on the bottom to sit on the knife edge.

Knife setting runs basically from the 3 to 6 minute mark

Of course a spiral cutter head is super easy to adjust :-)

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