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Main => Main Forum => Topic started by: shateredsoul on April 04, 2010, 07:27:38 pm

Title: question about weight of mdf
Post by: shateredsoul on April 04, 2010, 07:27:38 pm
how much does a sheet of mdf weigh? i'm not looking for any specific size, I just want to get an idea of how much it weight in comparison to plywood
Title: Re: question about weight of mdf
Post by: crashwg on April 04, 2010, 07:49:07 pm
3/4" Ply ~75lb
3/4" MDF ~ 100lb

Here's a thread about the weights of different thicknesses of MDF in which I detail how determine the weigh of MDF in reply #6:

http://forum.arcadecontrols.com/index.php?topic=31918.0 (http://forum.arcadecontrols.com/index.php?topic=31918.0)

And a rule of thumb for plywood is 25lb per quarter inch of thickness @ 4x8.
Title: Re: question about weight of mdf
Post by: SammyWI on April 04, 2010, 08:02:15 pm
From what I've seen online:

MDF = approx 48 lbs/ cu ft

Plywood = approx 36 lbs / cu ft

Those numbers will vary some but they line up well with crashwg's numbers and with how they feel when you pick up one of each.
Title: Re: question about weight of mdf
Post by: shateredsoul on April 04, 2010, 08:45:21 pm
Ahh.. so my friend was right about a sheet of mdf weighing about 100lbs..

I was thinking of going with mdf because it looks nicer when painted and it saves on cost.. but if I use two sheet we're talking about 50lbs more, hmm that's not too bad.

Title: Re: question about weight of mdf
Post by: Sectorseven on April 05, 2010, 01:37:26 am
Heh, I remember working my first day at a construction job where I had to move about a hundred of those MDF boards down a flight of stairs. I was trying to show off to the older guys by bringing like 3 down at a time. They practically had to carry me out at lunch break  :-[
Title: Re: question about weight of mdf
Post by: arzoo on April 05, 2010, 08:57:31 am
For my cab I used a combination of ply and mdf - the cab body is ply to save on weight and all the removable parts (control panel, doors, keyboard shelf) are made of mdf.
Title: Re: question about weight of mdf
Post by: Blanka on April 05, 2010, 09:09:17 am
800kg/m3 if you like metric :)
Title: Re: question about weight of mdf
Post by: daywane on April 06, 2010, 04:34:58 pm
Quote from: shateredsoul on April 04, 2010, 08:45:21 pm
Ahh.. so my friend was right about a sheet of mdf weighing about 100lbs..

I was thinking of going with mdf because it looks nicer when painted and it saves on cost.. but if I use two sheet we're talking about 50lbs more, hmm that's not too bad.


the heaviest 100lbs you will ever grab.
took me by surprise the first time I lifted a sheet and put it on my head.