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Re: ideas for changing the carbide inserts on silent power cutterblock #spiralcutterhead

 

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I keep a tight tolerance on the pressure bar on my Powermatic planer. ?I try to have the pressure bar just .001¡± higher than the cutters.? This really helps that small 12¡± PM100 with snipe but if the cutters get at all dull it has trouble feeding.? I have a Byrd head in mine and the carbide cutters when many years before the first rotation.? But in the past 6 months I¡¯ve run a bunch of reclaimed oak beams through the jointer, planer, and bandsaw and all three are dull.? I¡¯ve rotated the cutters on the jointer and I¡¯ve send the bandsaw blade off to be resharpened.?

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Bottom line, in my experience what you are running makes a huge difference.

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From: [email protected] <[email protected]> On Behalf Of david.r.milson@...
Sent: Thursday, November 26, 2020 1:20 AM
To: [email protected]
Subject: Re: [FOG] ideas for changing the carbide inserts on silent power cutterblock #spiralcutterhead

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Thanks Patrick
Initially, I could not imagine I'd put through anywhere near 5000 board feet.? Then, I wondered what this means!? If I prepare a face and edge on a 10' board across the jointer say passing it 4 times over the cutter head, is this 10 board feet or 40 board feet?? Then lifting the lid and doing the parallel faces in the thicknesser could make it a total of 60+ board feet (for the 10' board)?? If it is 40 or 60 then 5000 board does not seem unreasonable for the machine and I would have easily done 5000' in 12 months.?
Also, some timber recently was extremely dusty (which I assue was a lot of dirt build up, which I had brushed as best I could but can't have been good for the edge of the carbide.?
Both the infeed and outfeed tables appeared to?be parallel (co-planar) when checked with a level longer than the 2 tables (used as a straight edge) a week ago when I became aware of the problem.? After reading your response this afternoon I got my (shorter) straight edge out to double check, but got interrupted so will get back to this hopefully tomorrow.??
Cheers, David

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