Project by Sawdustonmyshoulder | posted 03-15-2010 02:38 AM | 25070 views | 72 times favorited | 17 comments | ![]() |
![]() |
This is the Loose Tenon Mortising Jig I posted earlier. I did test it and made a few improvements.
The major improvement was the addition of a “rabbeted” piece in the back of the jig (see the second photo) to keep the plastic sled from tipping forward during the cut. I made the rabbet shallow and put a small champfer on the hardwood runner so that I can easily remove the sled between cuts.
Another improvement was to rework the stops by using excess toilet flange bolts that I cut off to about 1 inch long and tighten the stops with brass knobs. These work better than the thumb screws.
I also made a couple of more wooden stops so that I could hold the “clamping rail” up while I made the cuts on the end of pieces.
Making loose tenon joint and lots of them is so easy with this jig. The third photo is some of the mortises I made this week. Cut 144 mortises in about 1 hour and 45 minutes. Lots of sawdust to clean up. Great fun!
I guess my next step is to make a set of plans.
I also spent a little time in front of the video camera and made a short video showing the use of this jig. See the video.
-- The more skilled you are at something, the worse you are at it when someone is watching.
17 comments so far
libraryman
home | projects | blog
45 posts in 4308 days
#1 posted 03-15-2010 03:34 AM
Looking forward to your plans. I’ve been looking for a jig like this. Great work on the jig and video. Thanks!
rbterhune
home | projects | blog
176 posts in 3784 days
#2 posted 03-15-2010 03:49 AM
Ditto…looking forward to the plans.
HuntleyBill
home | projects | blog
127 posts in 3653 days
#3 posted 03-15-2010 04:05 AM
I’ll take a set too. Please let us know when they are ready. This jig is fantastic!
-- If you think you can, or think you can't...your right!
donjoe
home | projects | blog
1360 posts in 3594 days
#4 posted 03-15-2010 04:52 AM
Great job!
-- Donnie-- listen to the wood.
bigike
home | projects | blog
4057 posts in 3851 days
#5 posted 03-15-2010 04:57 AM
nice work
-- Ike, Big Daddies Woodshop, http://[email protected]
rpete
home | projects | blog
54 posts in 3578 days
#6 posted 03-15-2010 05:02 AM
+1 on the plans. Great video!
Julian
home | projects | blog
884 posts in 4088 days
#7 posted 03-15-2010 12:42 PM
Now that looks like a fun project! I’m with the others on wanting to see some plans.
-- Julian, Homewood, IL
559dustdesigns
home | projects | blog
633 posts in 3731 days
#8 posted 03-15-2010 01:43 PM
This is an ingenious design, thanks for showing it off on video too.
-- Aaron - central California "If you haven't got the time to do it right, when will you find the time to do it over?"
TJCROSS
home | projects | blog
160 posts in 3561 days
#9 posted 03-15-2010 07:16 PM
Just the jig is a work of art!
-- www.theartsandcraftsstudio.com
Sawdustonmyshoulder
home | projects | blog
489 posts in 4191 days
#10 posted 03-16-2010 02:08 AM
I got a question over on the video blog page that I thought I would transfer over here.
Viking’s question was: Do you make you own tenons or is there a ready source for them? I have several projects that would most likely use 3/8” and 1/2” and possibly 1/4” tenons.
Viking, I make my own tenon stock out of what some call scrap and some call unassigned wood laying around the shop. It helps that I have a drum sander that sands in 1/128th of inch passes so that I can dial it just at the right fit. I round the corners with either a quarter round router bit or a appropriate sized bullnose router bit in my router table.
If I didn’t have the drum sander, I guess I could use the table saw to cut the tenons close and use sandpaper to fine tune the fit. I find that you don’t want the tenons too tight because the glue will swell the walls of the mortise and also the tenon. I am also going to add a saw kerf to the tenons to allow air to escape the mortise and not blow the glue out.
This ability to make your own tenon is really a great feature of loose tenon joinery because you don’t have to spend money on tenon stock or use expensive project wood to make tenons. Over the life of a project like I am working on now with almost 450 tenons at about 1 1/2 inch in stock length per traditional tenon equals about 25 board feet of lumber. And all of the tenons will be made from the stock that is cut off and headed to the trash.
I have some work to do on the chairs tonight but I will start on the SketchUp plans later in the week. I don’t work in the shop on Wednesdays (that’s the wife’s night with me) so I will do some “inside work” on the plans.
Thanks all for the kind comments!
-- The more skilled you are at something, the worse you are at it when someone is watching.
gmerteng
home | projects | blog
122 posts in 3676 days
#11 posted 03-17-2010 02:00 AM
Great job on the jig, ingenious, cant wait for the plans.
-- Mert,Oshkosh WI,
JimGo
home | projects | blog
3 posts in 3548 days
#12 posted 03-24-2010 09:31 PM
This is fantastic, and great timing! I’m just about to do a bunch of mortises (not as many as you!); do you have an ETA for the plans you mentioned? I don’t mean to pressure you, just curious. Otherwise I’ll have to see what I can do on my own (which I doubt will compare favorably!)
-- - Jim
iminmyshop
home | projects | blog
300 posts in 2557 days
#13 posted 02-25-2013 05:18 PM
This is the best danged shop made mortising jig I’ve seen. Were plans ever made available to download or buy for this jig?
-- http://www.alansfinewoodworking.com/
tomk807
home | projects | blog
2 posts in 2232 days
#14 posted 10-31-2013 12:23 AM
This is an excellent looking jig, and just what I have been looking for.
Can I obtain a set of the plans?
TomK in San Juan Capistrano
tomk807
home | projects | blog
2 posts in 2232 days
#15 posted 11-07-2013 07:43 PM
If you can e-mail the .skp file from your Sketchup drawing, it would be as good as a set of plans.
TomK
View all comments »
showing 1 through 15 of 17 comments
Have your say...