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All Replies on running finish through a planer

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View dakremer's profile

running finish through a planer

by dakremer
posted 613 days ago


27 replies so far

View chrisstef's profile (online now)

chrisstef

10399 posts in 1605 days


#1 posted 613 days ago

Personally id run it through. If theyre disposable blades, ya pissed away $30 but got clean wood. You could also flip em over if theyre 2 sided as well. The other option would be belt sand the wood or hand planing. I think id take the risk of running them through. I think the only way it would totally ruin your blades is if it had some sort of aluminum oxide finish on it like prefinished flooring.

-- "there aren’t many hand tools as awe-inspiring as the #8 jointer. I mean, it just reeks of cast iron heft and hubris" - Smitty

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Cosmicsniper

2199 posts in 1757 days


#2 posted 613 days ago

I’d run them through. The alternative usually takes time…which is money…which costs as much as new blades anyway. It’s arguably hard on blades, but it will not ruin them immediately.

-- jay, www.allaboutastro.com

View dakremer's profile

dakremer

2448 posts in 1690 days


#3 posted 613 days ago

you can tell its a crib that was manufactured by the 1000’s….it has a very thin finish on it… and some of it is flaking off

-- Hey you dang woodchucks, quit chucking my wood!!!!

View Loren's profile

Loren

7232 posts in 2246 days


#4 posted 613 days ago

I do it. I have a sharpener for my planer blades though
so it doesn’t cost me anything but time to fix them up.

Sometimes if I am not sure about what’s underneath the
paint, I’ll hog it off rough with a hand plane to get rid of grit
and check for metal.

-- http://lawoodworking.com

View canadianchips's profile

canadianchips

1831 posts in 1595 days


#5 posted 613 days ago

The finish, “varnish & paints” will dull the blades, a nail or piece of metal will knick the blade.
An option is to have 2 sets of blades , use one set for removing finishing and other set to plane raw wood. Might save you sharpening blades each time.
I have a dedicated 6” jointer that I only use on used lumber, another jointer for RAW ,clean lumber.
I don’t run used lumber through my planer, I use a drum sander if I am not sure.
“Only my little opinion”

-- "My mission in life - make everyone smile !"

View Tedster's profile

Tedster

2267 posts in 809 days


#6 posted 613 days ago

You may want to check for lead before planing or sanding that finish.

-- I support the 28th Amendment. http://www.wolf-pac.com/28th

View Tennessee's profile

Tennessee

1447 posts in 1113 days


#7 posted 613 days ago

If it is a stained finish, it will be lead free. If it is paint, it certainly may have lead, and be risky.
But if a lacquer or varnish finish it will almost always be a one piece spray type finish with color put in for one coat production work. It may even be a water base, being a baby crib and all.
Start planing, I don’t see where it will damage. Lot better edge and more level than sanding it off, and you can vacuum up most of what comes off from your planer.

-- Paul, Tennessee, http://www.tsunamiguitars.com

View BTimmons's profile

BTimmons

2078 posts in 1083 days


#8 posted 613 days ago

As an alternative if you’d like to avoid wear on your planer knives, if you have a card scraper that’s fresh and sharp, it should be able to remove a fair amount of the finish, if not all of it.

-- Brian Timmons, Big T Woodworks - https://www.etsy.com/shop/BigTWW - http://vimeo.com/98821147

View dakremer's profile

dakremer

2448 posts in 1690 days


#9 posted 613 days ago

There doesnt seem to be any stain or paint on the wood. Its just a clear finish on top

-- Hey you dang woodchucks, quit chucking my wood!!!!

View jap's profile

jap

1224 posts in 652 days


#10 posted 613 days ago

do it!

-- Joel

View DougRog's profile

DougRog

12 posts in 653 days


#11 posted 612 days ago

I take a strong neo (Neodymium) magnet in my hand (hold it like a pencil) and quickly slide it over each piece of wood. You’ll quickly find if there are any hidden nails when the magnet tries to grab any metal object. You probably don’t need it in this case, but works great for old boards that you are trying to salvage.

The “neos” are the strongest magnets around, last forever, and have the strength to ‘grab’ hidden nails. (It doesn’t pull them out, just shows you where they are).

-- The Higest Art, the Highest Science, and the Highest Religion is the same thing.

View LarryT's profile

LarryT

10 posts in 675 days


#12 posted 612 days ago

I have used these small magnets to detect hidden metal several times.
It works amazingly well. When the magnet is over a nail or screw it will move
right to the location.

View Nomad62's profile

Nomad62

688 posts in 1556 days


#13 posted 612 days ago

The potential of metal is definately the thing to worry most. Any finish will tend to build up on a blade (planer, jointer, circular, band, etc), making it seem dull; a quick cleaning with mineral spirits will fix that so if that is your only worry, have at it!

-- Power tools put us ahead of the monkeys

View dakremer's profile

dakremer

2448 posts in 1690 days


#14 posted 612 days ago

Yeah those magnets are awesome. I use them frequently. No chance of nails in this wood. Just wondering about the finish affecting my blades. Just got a new planer – don’t want to mess it up already

-- Hey you dang woodchucks, quit chucking my wood!!!!

View mzimmers's profile

mzimmers

104 posts in 2514 days


#15 posted 612 days ago

I take it you’re not a fan of chemical stripper?

-- M. Zimmers, central CA

View dakremer's profile

dakremer

2448 posts in 1690 days


#16 posted 612 days ago

never used it before

-- Hey you dang woodchucks, quit chucking my wood!!!!

View shampeon's profile

shampeon

1283 posts in 782 days


#17 posted 612 days ago

Chemical stripping is pretty messy business. I personally would hand plane it, but I don’t see why it would ruin your planer, as long as you understand that the finish may gum up your blades. Also look out for nails and screws.

-- ian | "You can't stop what's coming. It ain't all waiting on you. That's vanity."

View Tedster's profile

Tedster

2267 posts in 809 days


#18 posted 612 days ago

I like the card scraper idea.

Better quality dust mask and hepa filter in the shop vac to be on the safe side, health wise.

-- I support the 28th Amendment. http://www.wolf-pac.com/28th

View Jim Jakosh's profile

Jim Jakosh

11063 posts in 1704 days


#19 posted 610 days ago

I’d scrape it with a wood scraper and sand it. I’d avoid putting finished material through the planer unless you don’t care what happens to the knives…..............Jim

-- Jim Jakosh.....Practical Wood Products...........Learn something new every day!! Variety is the Spice of Life!!

View HorizontalMike's profile

HorizontalMike

6914 posts in 1512 days


#20 posted 610 days ago

I sure the “heck” you are paying attention to the wide variety of “know-it-alls”. The only thing it tells me is that the Internet is still i its infancy. If you are worried about screwing up planer blades, then strip it, chemically, period. If NOT, then blow through and replace blades if it screws up.

Sorry, I get tired of arm-chair specialists

In other words, do something,... and thing fix it if it needs fixin’ or leave it alone…

-- HorizontalMike -- "Woodpeckers understand..."

View Grandpa's profile

Grandpa

3046 posts in 1274 days


#21 posted 610 days ago

Finishes will certainly dull the blades. I was taught that this is a big no-no. I would chemically strip it. There are some good strippers out there these days. If you don’t like that and the finish is flaking off what about some sand paper and brush it off. Maybe a Scotch-brite pads to strip it. Back when I was a beginner there was no carbide. We used steel saw blades and we never cut anything with a previous finish or that had a chance of being dirty.

I have been out of state and away from my computer. Did you get those blades out of your jointer??

View John Ormsby's profile

John Ormsby

1276 posts in 2335 days


#22 posted 610 days ago

I recently had a situation where I stained and finished some baseboard and it matched some blinds in the same room perfectly. Took them over to install them and the lighting in the room changed the color completely.
I took them back and ran them through the planer to shave off the finish and start over. I have found it does not harm the blades if you take just enough off so the finish is lifted completely and the knives are not actually hitting the finish. I have done this many times without harming the blades.

Please note: I would never pass any enamel or water base coated wood through the planer with good blades. These types will damaged the blades. I am talking mainly poly and lacquer finishes that are not too heavy.

-- Oldworld, Fair Oaks, Ca

View dakremer's profile

dakremer

2448 posts in 1690 days


#23 posted 610 days ago

Grandpa – I did not get those bolts out yet. I’ve been able to loosen about 7 of the 12 bolts. The other 5 arent budging, and unfortnately are getting stripped pretty badly – probably gonna have to cut them.

-- Hey you dang woodchucks, quit chucking my wood!!!!

View HorizontalMike's profile

HorizontalMike

6914 posts in 1512 days


#24 posted 610 days ago

Doug,
Try drilling them first, as it is usually easier to center the bit while the head is still there. You have a removed bolt to use when sizing the correct easy-out (bolt remover).

-- HorizontalMike -- "Woodpeckers understand..."

View moke's profile

moke

464 posts in 1375 days


#25 posted 609 days ago

I tried running some varnished wood once at a request of a guy that gave me many tools when he moved into a condo. I knew better, but felt I owed him. Thinking the worst thing I would suffer was dull blades….that was not true, I ended up with this “hardened goop” around the blades and in the channel the blades where in. It was better in some places than others but it was all “nasty” to say the least. So learn from where others have screwed up…use chemical stripper.
Mike

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dakremer

2448 posts in 1690 days


#26 posted 608 days ago

Thanks for the video Mike, except I think I mislead you. I meant to say NUTS….not BOLTS

Here is the whole forum topic where we were discussing it and trying to figure out what to do….

Thanks for the help!

-- Hey you dang woodchucks, quit chucking my wood!!!!

View kizerpea's profile

kizerpea

746 posts in 966 days


#27 posted 607 days ago

Do it!!! send’um through !!!! burn da shavings

-- IF YOUR NOT MAKING DUST...YOU ARE COLLECTING IT! SOUTH CAROLINA.

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