"Lee Michaels" <leemichaels*nadaspam*@comcast.net> wrote in message news:...
>
> "PeterYew" <[email protected]> wrote in message
> news:[email protected]...
>> My artist wife typically paints on 1/4 in or 1/8 in (3 ft by 4 ft)
>> untempered masonite panels.
>> The panels are always first painted or gessoed on both sides and on
>> all 4 ends. They are usually not framed. Never had a problem until
>> several years ago.
>> Up until then the panels which I bought from regular lumber yards were
>> smooth on one side and rough textured on the other side.Now the panels
>> are smooth on both sides.
>> Now they warp in a short period.So I tried several things.
>> 1. I glued a baltic birch plywood cross brace on the back. No luck.
>> 2. I glued a baltic birch frame around the back plus the cross brace.
>> Again. no luck.
>> 3. I added a regular frame . Again, no luck.
>> Any suggestions?
>> My wife has shifted to canvas panels. but would like to go back to
>> masonite.
>>
>
> Is there any possibility that a local lumber yard could order the other
> kind of hardboard? It would be worth a phone call or two. It might also
> be worth looking around on the web to see if anybody still makes or sells
> it.
>
I did a quick search. I came up with these.
http://www.dickblick.com/zz149/45/
http://www.danielsmith.com/learn/techLeaflets/0012/
http://painting.about.com/od/paintingforbeginners/a/hardboard.htm
There is a lot more. If you want to continue on with the search, use this;
http://www.google.com/search?as_q=masonite%2C+paint&num=20&hl=en&btnG=Google+Search&as_epq=&as_oq=&as_eq=doors&lr=lang_en&as_ft=i&as_filetype=&as_qdr=all&as_occt=any&as_dt=i&as_sitesearch=&as_rights=&safe=images
From what I read, the tempered hardboard has oils that canlechout and
interfere with the paints. I really don't know if that would be a problem in
terms of warping though.