Go Back   Home > Forums > Design & Build > Construction Tips

Construction Tips Construction techniques and tips

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 30th November 2009, 09:15 PM   #1
diyAudio Member
chatziva's Avatar
Join Date: Jun 2007
Location: UK
Default How to treat MDF edges?

Hi guys

I need some help / ideas. I am making some speaker enclosures using pre-veneered mdf panels. That's great but the edges do not come pre-veneered.

I am contemplating whether I should veneer the edges too or whether I can just treat the bare mdf edges with a lacquer or other sealant.

Any ideas?

  Reply With Quote
Old 30th November 2009, 09:17 PM   #2
diyAudio Member
chatziva's Avatar
Join Date: Jun 2007
Location: UK
I read that shellac is good for treating mdf edges. Does anybody have any experience with this?
  Reply With Quote
Old 30th November 2009, 09:57 PM   #3
diyAudio Member
Steve Dunlap's Avatar
Join Date: Sep 2008
Location: Here
You can get rolls of paper backed veneer that are the same width as the mdf, assuming you used 0.75" mdf. Veneered edges will look better.
  Reply With Quote
Old 30th November 2009, 10:05 PM   #4
diyAudio Member
Join Date: May 2009
Location: Wellington
Like Steve says, iron-on veneer is a good choice. It comes in rolls with a hot-melt glue on one side. Lay it in place and heat with an iron (used for ironing clothes, you can get a cheap used one from a thrift store). You'll have a slight overhang of the veneer on both sides, don't worry about that. When it's cooled, trim the edges flush with a veneer trimmer. It fits over the edge and has a built-in blade that trims the veneer flush with the edge and chamfers it slightly.
  Reply With Quote
Old 30th November 2009, 10:05 PM   #5
sts9fan is offline sts9fan  United States
diyAudio Member
Join Date: Apr 2006
Location: MA
Shellac works great. Will take five or six coats but they can be applied pretty fast.
  Reply With Quote
Old 1st December 2009, 11:53 AM   #6
marce is offline marce  United Kingdom
diyAudio Member
Join Date: Jun 2007
Location: Blackburn, Lancs
Ronseal - Product Details - Wet Rot Wood Hardener

I use the above on MDF edges, especially where I've routed round overs or other shapes, sets solid.
  Reply With Quote
Old 1st December 2009, 12:18 PM   #7
diyAudio Member
Join Date: Apr 2003
Location: Southern Tier NY
Veneer works ok if you have the cuts offset so that it is flush. You can feather it as well but run the risk of sanding through the veneer and leaving an uneven edge. A common solution is to rabbet the edge and glue in a piece of solid wood and then round over that. i.e. a 1/2" roundover would need a 1/2" rabbet with a 1/2" x 1/2" solid wood glued in.

If you are leaving the edges square then just miter it. I use biscuits or a solid strip to provide strength to the joint. If you have a table saw the later is easy to do.
Living Life Doing the Waltz in 4/4 meter.
  Reply With Quote
Old 8th December 2009, 10:57 AM   #8
diyAudio Member
Join Date: Mar 2005
Location: Portugal
The 2 component primer surfacer (automotive paint)works a charm.Usually just few layers with spray gun or 1 thick layer with brush is enough.It's easy to sand also.
xxx I should correct my spelling xxx
  Reply With Quote
Old 8th December 2009, 12:47 PM   #9
diyAudio Member
Holger Barske's Avatar
Join Date: Jan 2001
Location: Ruhrgebiet
If you really want to hide the MDF edges forever - don't produce them. There is absolutely no possibility to have them invisible for a longer time. They'll always come through, you just have to wait long enough. Even through veneer.
You can't hide them, so use shadow gaps to enforce them. Or, even better, mitre you panels, so there will be no edges.
Best regards: Holger
www.holgerbarske.com - Deutschsprachiges Paradise-Support-Forum
  Reply With Quote
Old 12th December 2009, 09:08 PM   #10
audi0 is offline audi0  Australia
Account disabled at member's request
Join Date: May 2009
Location: 37.34 degrees South
Blog Entries: 5
Default Mitred corners

  Reply With Quote


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
MDF edges and screws rinx Multi-Way 32 16th August 2008 03:36 PM
anybody acoustically treat their room with QRDs or sound absorbers? thadman Multi-Way 2 19th July 2007 07:58 PM
Treat twin woofers as one woofer? Mos Fetish Multi-Way 78 30th March 2007 03:02 AM

New To Site? Need Help?

All times are GMT. The time now is 02:27 AM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2