99flhr

Apologise in advance if this is a stupid question.
Will treated wood prematurely dull planer / jointer knives ?
Yes, I know that breathing the dust is to be avoided.
Thanks

pianoman

You`re right about the dust and pine can leave a pappy residue that needs to be cleaned from the knives after planing. I really don`t see any problems planing treated lumber...I`m not sure what kind of feed rollers you have...but would also clean those after planing with solvent. Rick

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firehawkmph

Just curious 99, (sounds like Maxwell Smart),
What are you building out of treated lumber that needs to be planed and/or jointed?
Mike Hawkins

99flhr

Doesn`t "need" treated lumber, had some 4x4`s left over from building an outdoor shed. Needed sturdy legs for a RAS stand and thought I`d do it on the cheap but still make it look a little more finished. Doesn`t matter now, as I`ve changed the plan.
My concern with knife life comes from jointer directions warning against using lumber with a high moisture content. Since treated lumber is infused with liquid chemicals I wondered if it qualifies as "damp" .

EDIT: Enjoyed your bookcase over in "projects"
Very nice, evidently your weekends have more hours in them than mine. That would take this
newb at least a week ! Maybe more...

firehawkmph

Thanks 99.
Some of my projects go quicker than others, depends on the mood I'm in and if I am organized that day or not. Sometimes I forget to do something and have to reset a machine setup again. The good thing is, no matter how long it takes me, if I am out in the shop, it's never a race, just a good time.
Mike Hawkins

Handyman

Treated lumber is drenched at best. Older treated lumber was treated with Arsenic. Wood treated after 03 or 04 is treated with Chlorine. Chlorine is a caustic towards steal. You can plain treated wood on your jointer/plainer, just clean your tool very well after use.

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Collector of Old Tools
Fixer of all things broke
Expert = Drip under pressure