I flunked dovetail making today. Why? - Router Forums
 
LinkBack Thread Tools Display Modes
post #1 of 9 (permalink) Old 02-11-2015, 07:34 PM Thread Starter
Registered User
 
Join Date: Feb 2015
Country: United States
First Name: Rick (actually Enrico)
Posts: 90
 
Default I flunked dovetail making today. Why?

Today I decided to practice and teach myself how to make dovetail joints, because I have an upcoming cabinet making project in mind. Specifically, I was trying to make a rabbeted dovetail according to my Sears dovetail making kit and its manual. So after two tries, I decided that I must be setting something up wrongly because the depth of the slots in the "front" of the drawer are very shallow compared to the "pins" on the drawer side member that insert into them. I set the depth cams on the fixture as deep as possible on the second try, but the outcome was similar to the first try. These are 1/2" dovetails being cut into 3/4" thick scrap pine wood boards (for practice). What am I missing?
Rick
jaguar1201 is offline  
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old 02-12-2015, 05:34 AM
Registered User
 
paduke's Avatar
 
Join Date: Mar 2010
Country: United States
First Name: Bill
Posts: 1,184
 
Default

It sounds like the bit height is wrong.

Learning is an exciting adventure
paduke is offline  
post #3 of 9 (permalink) Old 02-12-2015, 08:10 AM
Registered User
 
Join Date: Jul 2007
Country: United States
First Name: Dick
Posts: 197
 
Default

a picture would help. we could better see the relationship of the boards with each other or in the jig
dick in ia is offline  
Sponsored Links
Advertisement
 
post #4 of 9 (permalink) Old 02-12-2015, 11:07 PM Thread Starter
Registered User
 
Join Date: Feb 2015
Country: United States
First Name: Rick (actually Enrico)
Posts: 90
 
Default I will try to get photos and scan the fixture kit guide

I will see about getting photos tomorrow, as it is almost midnight here now, and I will scan the Sears manual. However, to clarify the problem, it is not the bit depth height that I am talking about, but rather the distance of the router travel before the guide bushing has gone as far as the space between the template plate fingers allows and the travel ceases. This travel into the drawer front board isn't deep enough to allow the pins of the side board to enter to the proper depth. Minor depth adjustments can be made by the depth adjustment tabs, but this is woefully insufficent to reach the travel needed. I think the spaces between the template fingers needs to be about 0.25" deeper at least. The trial boards are 0.75" thick and per the manual the top board has been rabbet cut 0.375" all the way around.
Rick
jaguar1201 is offline  
post #5 of 9 (permalink) Old 02-13-2015, 01:42 AM
Registered User
 
DaninVan's Avatar
 
Join Date: Dec 2011
Country: Canada
First Name: Dan
Posts: 13,831
 
Default

Probably a really silly question, but are you positive the template guide is the correct one?
DaninVan is offline  
post #6 of 9 (permalink) Old 02-13-2015, 04:39 AM
Registered User
 
paduke's Avatar
 
Join Date: Mar 2010
Country: United States
First Name: Bill
Posts: 1,184
 
Default

Are the sockets on the back of the drawer deep enough for the tails to fit in? The sockets on the front are not deep enough? Drawer fronts are rabbeted on most jigs by removing the drawer side from the jig and sliding the drawer front out until the "front reveal" extends beyond the fingers

Learning is an exciting adventure
paduke is offline  
post #7 of 9 (permalink) Old 02-13-2015, 06:18 AM
Registered User
 
Nickp's Avatar
 
Join Date: Dec 2012
Country: United States
First Name: Nick
Posts: 3,353
 
Default

Since the front is offset the template guide needs to be further back to allow the bit to travel further by mounting the angle bracket behind the spacer washers. Likely to only get about 1/8 inch out of that. To get the additional 1/4 to achieve the .375 offset you will need to move your drawer front board forward 1/4 inch. Might need to space out your side board also if you want to cut them at the same time or cut them independently.

Believe the jig only allows 1/8" offset...I would add 1/4" spacer under the side board...

Nick

EDIT...make sure the spacers behind/front of angle brackets mounting the template guide are 3/8 and not 1/8...

Nick

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Points to Ponder...

LEARNING - the decision you make to know and
understand more about some thing.

TIME - the thing that gets in the way of learning.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Last edited by Nickp; 02-13-2015 at 06:35 AM.
Nickp is offline  
post #8 of 9 (permalink) Old 02-13-2015, 04:55 PM Thread Starter
Registered User
 
Join Date: Feb 2015
Country: United States
First Name: Rick (actually Enrico)
Posts: 90
 
Default Rabbeted dovetails are easy, but not W/O THE RABBET

Thank you Bill,Nick, Dan and Dick for your feedback and help. Today I solved the dual problems with my set-up and was able to cut the rabbeted dovetail joint in my practice boards. I still have refinements to make, but the basic process is now understood. Essentially, problem number one was the bit height, as you suggested, because the bit slid down into the collet during tightening it.
But the second more major problem was the poor Sears instruction manual, which I tend to follow line by line. The manual was very specific about rabbet cutting all the four sides of the drawer front, but never mentioned that a rabbet cut is also required on the side board. Vola, this deepened the distance that the pins entered the slots in the drawer front to make a nice fit.
Lesson #1 is now passed.
Rick
jaguar1201 is offline  
post #9 of 9 (permalink) Old 02-13-2015, 05:57 PM
Registered User
 
paduke's Avatar
 
Join Date: Mar 2010
Country: United States
First Name: Bill
Posts: 1,184
 
Default

We all go through the learning curve and hit the guard rails

Learning is an exciting adventure
paduke is offline  
Reply

Quick Reply
Message:
Options

Register Now



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

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

Password:


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

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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
Craftsman Dovetail Fixture 720-2570 vuldub Jigs and Fixtures 3 11-26-2017 04:32 PM
Dovetail Depth of Cut Sherwood Portable Routing 10 11-19-2012 09:36 AM
Issues Cutting Dovetail Dados with Table Router Gazzalodi Table-mounted Routing 21 05-02-2006 10:40 PM
Making your own dovetail jig templates Dominick Giarraputo Jigs and Fixtures 2 09-03-2005 06:17 AM

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 On
Refbacks are On

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