LumberJocks

What size mortise do you use?

  • Advertise with us

« back to LumberJocks.com Site Feedback forum

Forum topic by Hewy posted 02-28-2011 12:13 AM 1485 views 0 times favorited 2 replies Add to Favorites Watch
View Hewy's profile

Hewy

19 posts in 1435 days


02-28-2011 12:13 AM

Topic tags/keywords: mortise size

I just got a hollow chisel mortising machine. What I would would like to know is what width mortise
to use in 3/4” oak. If you use the rule of 1/3 the stock width you would use a 1/4” wide
mortise. This just seems on the small side to me. Would 5/16” be a better choice? Please
let me know what you are using.

Thankyou


2 replies so far

View richgreer's profile

richgreer

4525 posts in 1823 days


#1 posted 02-28-2011 02:49 AM

I personally think the 1/3rd rule is about right. Too big of a mortise can be just as weak as too small of a mortise.

I use 1/4” mortises on 3/4 stock.

-- Rich, Cedar Rapids, IA - I'm a woodworker. I don't create beauty, I reveal it.

View TheDane's profile

TheDane

3982 posts in 2411 days


#2 posted 02-28-2011 03:08 AM

It depends. In most projects, I use the 1/3rd rule just as Rich does … especially if the mortise and tenon are both made of 3/4” thick stock.

The exception might be if the project calls for through mortise and tenons (a lot of A&C / Mission furniture uses through M&T). I think 1/4” through tenons look odd, so I will generally go to 3/8” if the tenon will just have a rounded-over end, 1/2” if the tenon will be chamfered.

—Gerry

-- Gerry -- "I don't plan to ever really grow up ... I'm just going to learn how to act in public!"

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com

Latest Projects | Latest Blog Entries | Latest Forum Topics

GardenTenders.com :: gardening showcase