General No. 840 Doweling Jig...what a deal...
Posted: Thu Nov 05, 2020 5:46 pm
I stopped by a garage sale the other day...couldn't pass this up for $3.00...
.
.
.
.
.
.
A woodworking forum for everything from hand tools to CNC.
https://workersofwood.com/
Range is up to 4 1/4" for the workpiece...center of hole to edge of wood is 2 1/2"...by orienting the jig you can put a dowel right on the edge of that 4 1/4". It is NOT self-centering...YAY...Cherryville Chuck wrote: ↑Thu Nov 05, 2020 11:39 pm Just out of curiosity does it self center and what's the range on it?
...and the new ones are plastic...! I saw metal ones on ebay for $15 to $20...Herb Stoops wrote: ↑Fri Nov 06, 2020 5:00 am @Nickp You saved a few Bucks.
https://www.houzz.com/pvp/general-840-d ... 19f3b229d1
Herb
I bought one that is self centering and it's okay in some circumstances, like drilling a dowel. Usually when I need to make a dowel jig I use the drill bushings that Lee Valley sells. I agree with you that being able to register the holes the same distance from an edge is usually more important. The same is true with mortising jigs when you're using a router to make the mortises. With either one it's easy to make offsets such as an apron that is offset from the outer edges of a leg by just adding a shim in between the jig and your piece. Say you want a 1/8" offset for your apron all you have to do is add a 1/8" shim when you mortise or dowel it and it will fit 1/8" back from the front of the leg.Nickp wrote: ↑Fri Nov 06, 2020 7:36 amRange is up to 4 1/4" for the workpiece...center of hole to edge of wood is 2 1/2"...by orienting the jig you can put a dowel right on the edge of that 4 1/4". It is NOT self-centering...YAY...Cherryville Chuck wrote: ↑Thu Nov 05, 2020 11:39 pm Just out of curiosity does it self center and what's the range on it?
What I like most is that you can adjust the guide hole so that it is always the same distance from the face of the workpiece...that's better than self-centering.
The new ones are plastic...this one is all metal...don't know if the plastic ones are the same size...
Since the guide slides on the rods the same shim principle can be used for repeatability...piece of stock between the base and slide and VIOLA...Cherryville Chuck wrote: ↑Fri Nov 06, 2020 11:30 pmI bought one that is self centering and it's okay in some circumstances, like drilling a dowel. Usually when I need to make a dowel jig I use the drill bushings that Lee Valley sells. I agree with you that being able to register the holes the same distance from an edge is usually more important. The same is true with mortising jigs when you're using a router to make the mortises. With either one it's easy to make offsets such as an apron that is offset from the outer edges of a leg by just adding a shim in between the jig and your piece. Say you want a 1/8" offset for your apron all you have to do is add a 1/8" shim when you mortise or dowel it and it will fit 1/8" back from the front of the leg.Nickp wrote: ↑Fri Nov 06, 2020 7:36 amRange is up to 4 1/4" for the workpiece...center of hole to edge of wood is 2 1/2"...by orienting the jig you can put a dowel right on the edge of that 4 1/4". It is NOT self-centering...YAY...Cherryville Chuck wrote: ↑Thu Nov 05, 2020 11:39 pm Just out of curiosity does it self center and what's the range on it?
What I like most is that you can adjust the guide hole so that it is always the same distance from the face of the workpiece...that's better than self-centering.
The new ones are plastic...this one is all metal...don't know if the plastic ones are the same size...
Excellent idea...hadn't thought of that...and really excellent when the piece would be too big or clumsy on the drill press.Herb Stoops wrote: ↑Sat Nov 07, 2020 12:47 am You can use those to cut mortises too by drilling each end of the mortise and then sliding it along to drill out the center. Then remove and use a chisel to clean up the inside, I have done it many times.
Herb