Finishing MDF


I've been prototyping boxes (to eventually be cut out of hardwood) using MDF and began to wonder if it'd be possible to apply some kind of lacquer-like decorative finish to the MDF. I've posted a photo of some sample parts to news://alt.binaries.pictures.woodworking and will appreciate suggestions.
-- Morris Dovey DeSoto Solar DeSoto, Iowa USA http://www.iedu.com/DeSoto/solar.html
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
I made a work table for my shop - put about 10 coats of poly on it. Works great. Glue and everything else just scrapes off. and when it gets beat up - I just sand and repoly.
Been great for a few years now.

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Wonder if it they could be dipped and hung?
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On Sat, 21 May 2005 18:07:13 -0400, the inscrutable "Buck Frobisher"

That sounds like something the Puritans did to witches way back when...
- The only reason I would take up exercising is || http://diversify.com so that I could hear heavy breathing again. || Programmed Websites
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Hee hee hee! Or another legal firm's name..?
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

There are companies who make lacquer-based primers which have good filling ability. I would fully expect the end grain to get all furry though. Sanding parts like that would be a chore. Too much paint, and you'll lose at that nifty detail. Would shellac raise much of that grain?
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

My first impulse was to harden the surface with shellac, sand off the fuzz, shellac again, sand again very lightly, and spray with high-gloss <something>. It's identifying the <something> that I'm unsure about.
End grain (any kind of grain) isn't much of a problem with MDF (-:
The hardwood (maple and cherry) versions will get all the TLC they need (without much regard for how much of a chore it might be - they're intended to be gifts and I have half the year left to get this job finished. They'll be sanded, scraped, and treated to a BLO finish.
I was actually kind of hoping that some kind soul would volunteer that MDF just isn't worth the effort. <g>
But <s> I'll check out the lacquer-based primers. Thanks.
-- Morris
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Morris Dovey wrote:

I use MDF quite a bit, like any timber project the finish is directly proportional to the preparation. Sand the edges with 120 paper, then sand all over including the edge again with 240 paper. Apply one coat of your chosen finish and when dry sand of the bloom with 240 or finer paper and apply a second coat. Apply as many coats of finish as you like following the manufactures direction and there you have it. You can also use woodstains to put a bit of colour into the item. Apply these before the first finishing coat so that they strike into the wood. Good luck John
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Thanks! -- Morris
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
wrote:

Dewaxed shellac is a great MDF sealer. I use Seal Coat for a clear finish, or white BIN if I'm painting it.
For a high gloss finish, lacquer goes very nicely over shellac, as does more shellac.
Barry
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Look at Zinsser "Bin" primer, which is tinted shellac.
http://www.zinsser.com/product_detail.asp?ProductID 
You can also tint that product...
Morris Dovey wrote:

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Site Timeline

HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.