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Planing MDF

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Forum topic by Peace posted 03-08-2017 01:16 AM 955 views 0 times favorited 15 replies Add to Favorites Watch
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Peace

12 posts in 414 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

TheFridge

8287 posts in 1319 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 Jimbo4's profile

Jimbo4

1578 posts in 2596 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 !

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Aj2

1171 posts in 1631 days


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

Terrible idea, Mdf will dull your knives very quickly.

Aj

-- Aj

View William Shelley's profile

William Shelley

477 posts in 1303 days


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



Terrible idea, Mdf will dull your knives very quickly.

Aj

- Aj2

Yep, even carbide gets dulled by MDF pretty fast.

-- Woodworking from an engineer's perspective

View Tabletop's profile

Tabletop

126 posts in 581 days


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

Don’t do it!

View papadan's profile

papadan

3584 posts in 3202 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

bonesbr549

1445 posts in 2900 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

bigblockyeti

4692 posts in 1554 days


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

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

View Underdog's profile

Underdog

1051 posts in 1869 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.

-- "woodworker with an asterisk"

View Fred Hargis's profile

Fred Hargis

4756 posts in 2327 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

Madmark2

370 posts in 421 days


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

(Snicker)

M

View Loren's profile (online now)

Loren

9605 posts in 3481 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
surface.

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

dschlic1

394 posts in 1803 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

HokieKen

4505 posts in 972 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

2575 posts in 2755 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, but I have a GED and my DD 214

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