View Single Post
  #1 (permalink)  
Old 10-08-2011, 06:47 PM
derekcohen's Avatar
derekcohen derekcohen is offline
Member
 
Join Date: Dec 2009
Location: Perth, Australia
Posts: 446
Default Half blinds revisited

When I started the thread "Against the Clock" the intention was to explore efficiency. Looking back I thought the methods used could have been improved, and that doing so would provide the efficiency I sought for the remaining (now eight) drawers left to build.

So here I offer two methods for the removal of waste from half blind dovetail pins. Both work easily and fairly quickly. One is power assisted and the other is 100% handtool.

Interestingly, where the previous drawer was a frantic 4 hour race against the clock, today was a relaxed 3 1/2 hour session.

Starting with a marked, sawn and kerfed pin board ...



Two pins were routed and two were chopped out for comparison. The difference this time is that the boards were placed flat (rather than vertically) for the routing ...



... and only the baseline was cleared (with a 1/16" left to finish with a chisel) ..





That took 8 minutes to complete:



Method #2 involved progressively chopping out a mortice ...



... and then splitting out the waste as the mortice deepened. This is the method I generally use ..



This required a total of 10 minutes ...



The above was repeated with the remaining two pins. Both were completed in a further 10 minutes ..



.. and the pin and tail boards fitted ...



Likes and dislikes: I dislike the noise of a router. Dust is not a problem as the Elu I have is efficient at sucking the dust into a Fein vacuum cleaner. This is a speedier method, but chiseling is very close behind. On the other hand I like that the router has a depth stop and that there is no danger of blowing out or cracking the face of the pin board with an overzealous chisel blow. This is always on my mind as I chop into the hard Jarrah. Routing the initial mortice does remove a great deal of stress from the process.

For the other side of the drawer I decided to use the router alone to gauge the ease/speed more realistically by excluding interruptions, such as photos.





After a casual 35 minutes ...



The rear of the drawer was dovetailed and assembled ..



Progress to date:



Hopefully the next thread on the military chests will be to show the completed drawers.

Regards from Perth

Derek
__________________
Articles on furniture construction, shop tools and reviews at http://www.inthewoodshop.com
Reply With Quote