Steel channel to prevent cupping - Woodworking Talk - Woodworkers Forum
Thread Tools Display Modes
post #1 of 2 Old 10-28-2018, 09:18 PM Thread Starter
Hawkdriver's Avatar
Join Date: Sep 2016
Location: Pa
Posts: 33
View Hawkdriver's Photo Album My Photos
Steel channel to prevent cupping

Looking for your thoughts here. Im getting ready for a lived edge kitchen table build consisting of 3 boards edge joined spanning approx 40in. I have seen an a few instagram feeds that companies are using steel channel routed under the slab to prevent cupping obviously with elongated screw holes to allow movement. I like the idea if i can prevent any cupping im ok with doing it however i cannot easily find the channel short of paying a crazy price from a few specific companies. Is it worth the investment or if dried, glue up and finished properly is it overkill? If you think its worth the effort any source of the channel online?
Hawkdriver is offline  
Sponsored Links
post #2 of 2 Old 10-28-2018, 10:08 PM
Senior Member
Join Date: Sep 2011
Posts: 26,083
View Steve Neul's Photo Album My Photos
It's possible the steel would help however it would have to be sufficient for what ever thickness of top you make. I wouldn't route a channel in the bottom for it though. Generally what ever you do to one side of wood you should do to both sides. By routing a channel on the underside you would weaken that side of the wood and cause the top to warp where it might not without the grooves. Most of the time warpage is caused by a imbalance in moisture content from one side to the other. We often have a member make a table top and leave it laying on their work bench for a couple days and find out it warped. By doing that moisture in the air can get to one side and not the other so the side facing up swells up. It's the same with a finished table if you only put a finish on the top and leave the underside raw wood. The underside needs a finish too for this reason.
Steve Neul is offline  

Quick Reply

Register Now

In order to be able to post messages on the Woodworking Talk - Woodworkers Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Similar Threads
Thread Thread Starter Forum Replies Last Post
How to attach teak boards to steel frame for Boy Scout project? bison General Woodworking Discussion 4 04-26-2018 05:11 PM
Woodturning carbide chisel steel holder jac_solar General Woodworking Discussion 5 01-30-2018 10:22 AM
Stainless Steel Kitchen Doors Russell Hudson General Woodworking Discussion 12 10-29-2017 09:05 AM
Additional tuning on Grizzly 14" Bandsaw chughes10 Power Tools & Machinery 11 12-31-2016 06:14 AM
Sealer for Steel. Nathan Vaughan Wood Finishing 9 09-13-2015 04:35 PM

Posting Rules  
You may post new threads
You may 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

For the best viewing experience please update your browser to Google Chrome