Planing MDF

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Forum topic by Peace posted 03-08-2017 01:16 AM 1131 views 0 times favorited 15 replies Add to Favorites Watch
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13 posts in 695 days

03-08-2017 01:16 AM

Topic tags/keywords: planing mdf

Can I plane MDF in a planer?

15 replies so far

View TheFridge's profile


10081 posts in 1600 days

#1 posted 03-08-2017 01:25 AM

Sure. Give it a shot.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View JollyGreen67's profile


1676 posts in 2877 days

#2 posted 03-08-2017 01:28 AM

Dust, dust, dust – lots of it !

-- When I was a kid I wanted to be older . . . . . this CRAP is not what I expected ! RIP 09/08/2018

View Aj2's profile


1646 posts in 1912 days

#3 posted 03-08-2017 02:06 AM

Terrible idea, Mdf will dull your knives very quickly.


-- Aj

View William Shelley's profile

William Shelley

576 posts in 1583 days

#4 posted 03-08-2017 02:54 AM

Terrible idea, Mdf will dull your knives very quickly.


- Aj2

Yep, even carbide gets dulled by MDF pretty fast.

-- Woodworking from an engineer's perspective

View Tabletop's profile


138 posts in 862 days

#5 posted 03-08-2017 03:50 AM

Don’t do it!

View papadan's profile


3584 posts in 3483 days

#6 posted 03-08-2017 03:53 AM

You can do it, but why? MDF is available in different thicknesses and it’s cheap.

View bonesbr549's profile


1576 posts in 3181 days

#7 posted 03-08-2017 02:36 PM

Sure. Give it a shot.

- TheFridge

...u a bad boy!!!!!

I have a CNC machine and the table is MDF and you have to surface your top to get it perfectly aligned to your spindle. The practice uses a flat bottom router bit and make passes till its fully surfaced. Mine’s 4’x8’ so it takes a while.

IT SPITS DUST!!!!!!!!!!!!!!!!!!!

I have a Dust collector and still don’t get it all.

No in a planer it will be bad all the way around.


-- Sooner or later Liberals run out of other people's money.

View bigblockyeti's profile (online now)


5200 posts in 1835 days

#8 posted 03-08-2017 02:40 PM

Not for long, it will dull HHS very, very quickly.

-- "Lack of effort will result in failure with amazing predictability" - Me

View Underdog's profile


1170 posts in 2150 days

#9 posted 03-08-2017 02:45 PM

Sure you can plane MDF. Plywood too. And reclaimed lumber with rocks and nails in it.

But you’ll have to sharpen your blades in short order.

Not really a good idea.

Just buy the thickness that you need.

-- Jim, Georgia, USA

View Fred Hargis's profile

Fred Hargis

5065 posts in 2607 days

#10 posted 03-08-2017 05:33 PM

You might try it once, but I’d bet this month’s SS check you wouldn’t do it twice.

-- Our village hasn't lost it's idiot, he was elected to congress.

View Madmark2's profile


388 posts in 702 days

#11 posted 03-08-2017 06:05 PM



View Loren's profile


10477 posts in 3762 days

#12 posted 03-08-2017 06:29 PM

I think I may have done it once and while
it didn’t immediately ruin my knives, I vaguely
recall that it didn’t produce a very nice planed

Another way to thickness MDF is make saw
kerfs to depth on the table saw and plane
or chisel away until the saw kerfs are gone.

View dschlic1's profile


441 posts in 2084 days

#13 posted 03-08-2017 06:33 PM

You can probably plane it, but realize that the inside is porous and softer than the two outside faces. Just look at the side of a piece.

View HokieKen's profile (online now)


6141 posts in 1253 days

#14 posted 03-08-2017 09:11 PM

In addition to MDF being highly abrasive and eating up your knives, the dust produced is some nasty stuff and very bad on your lungs. I would keep it out of my planer without question. But, if you feel you must plane it, please keep your shop well ventilated, DC on and wear a respirator. A good one.

-- Kenny, SW VA, Go Hokies!!!

View Jim Finn's profile

Jim Finn

2670 posts in 3036 days

#15 posted 03-09-2017 12:25 AM

I wanted some MDF in 3/8” thickness and had only 1/2” on hand. I re-sawed it on my band saw and sanded it a little. Worked well for the small amount needed.

-- No PHD just a DD214 Website>

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