Planing MDF

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Forum topic by Peace posted 03-08-2017 01:16 AM 1269 views 0 times favorited 15 replies Add to Favorites Watch
View Peace's profile


15 posts in 970 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


10858 posts in 1875 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 3152 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


2271 posts in 2187 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

609 posts in 1859 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


139 posts in 1137 days

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

Don’t do it!

View papadan's profile


3584 posts in 3758 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


1581 posts in 3456 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


5744 posts in 2110 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


1328 posts in 2425 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

5545 posts in 2883 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


461 posts in 978 days

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



View Loren's profile


10477 posts in 4037 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


450 posts in 2359 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


9531 posts in 1528 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

2705 posts in 3311 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

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