[SML] 1/4" tempered hardboard?

[Jon Lagerquist]

As always, your mileage will vary. We put down lots of MDF (hundreds of 
sheets a year) and run a lot of wagons and pallets over it with no 
issue. I am sure that with a high enough point load you could de 
laminate a sheet but I have not seen that happen. We find it to be 
stable inside in southern California, like all wood if you have wide 
swings all bets are off.

Jon
-- 
Jon Lagerquist
South Coast Repertory
--


On 2/20/2020 9:15 AM, Mike Katz via Stagecraft wrote:
> MDO is like plyron but with a medium density overlay instead of a Hi 
> Density overlay. MDF is a medium density fiberboard. Masonite is no 
> longer made by the masonite corporation is Hi density fiberboard. That 
> is why it is such a good solution for floors. It is a very dense and 
> cover with very little structural strength which is why you have a 
> plywood floor for structure with the High density board as a wear layer.
> MDF is a bad solution for floors in my opinion especially if there are 
> heavy wagons moving on it. It is too soft to be the kind of wear layer 
> that Hardboard is.
> Mike
> Michael Katz
> narishkup at gmail.com <mailto:narishkup at gmail.com>
> C: 857.383.0020
> 
> 
> On Thu, Feb 20, 2020 at 10:37 AM Steven Hood via Stagecraft 
> <stagecraft at theatrical.net <mailto:stagecraft at theatrical.net>> wrote:
> 
>     __
>     Another option might be thin plyron, though that might be a special
>     order, too. I think the thinnest it comes is about 3/8" or 7/16".
>     Yet another option might MDO, mostly used by sign makers, from what
>     I understand.
>     What's the intended use? If smooth and double-sided are the only
>     criteria, 22-gauge sheet metal meets them. Or foam-core. There are
>     lots of options out there, including plastics.
>     Steven
> 
>     On February 20, 2020 5:02:06 AM Steven Mclean via Stagecraft
>     <stagecraft at theatrical.net <mailto:stagecraft at theatrical.net>> wrote:
> 
>>     I haven't been able to find 1/4 MDF yet either, and since the
>>     designer specified Hardboard for it's smooth & hard finish &
>>     passed on Lauan because it wasn't smooth enough, I am not
>>     convinced that MDF would have the surface that he is looking for.
>>
>>     Plan C is ton laminate 2 thicknesses of 1/8" (tempered 1 side/
>>     other side that tight waffle texture) together with rough sides
>>     together to achieve 1/4" tempered both sides.  Sigh!
>>
>>     On Wed, Feb 19, 2020 at 9:17 PM Steven Hood <shood_td at yahoo.com
>>     <mailto:shood_td at yahoo.com>> wrote:
>>
>>         __
>>         I haven't seen 1/4" tempered hardboard in a long time. 3/16",
>>         yes. I've seen places switch to 1/4" MDF.
>>         Hth,
>>         Steven R Hood
>>
>>         On February 19, 2020 5:56:23 PM Steven Mclean via Stagecraft
>>         <stagecraft at theatrical.net <mailto:stagecraft at theatrical.net>>
>>         wrote:
>>
>>>         I am working for a small startup theatre in SW Florida and
>>>         our designer for Curious Incident... has specified decking
>>>         over the floor with 1/4" "masonite" .  Problem is, I can't
>>>         find a source for the stuff in the area.
>>>         Steven J McLean
>>
>>
>>
>>     -- 
>>     Steven J McLean
>>     515-480-8461
>>     stevenjmclean at gmail.com <mailto:stevenjmclean at gmail.com>
>>     designandtechtheatre.wordpress.com
>>     <http://designandtechtheatre.wordpress.com>
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> 
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-- 
Jon Lagerquist
--