Table saw dado blade set at 3 5/8" width, height 3/4". It's not clear
from your question where the dados are, but clamping pieces together
ensures that the dados are perfectly aligned.
If you don't have a table saw or the boards are unwieldy on your table
saw, you can also use a dado router bit in a router set at 3/4" depth.
Guess you need a router with 50 hp and 1.5" shank to turn that puppy.
Ok seriously you could use the jig technique The Router Workshop guys use to
layout the rectangular cut-out size you need. Using strips of scrap
straight wood tacked to a piece of ply (which will become your template)
define the outside of the cut-out (plus the extra distance needed for the
router guide). Use a spiral bit and template guide in router to cut
template. Attach another couple pieces of wood to define where the corners
of table will butt up against. Now attach template to work piece using
clamps in each corner cutting out the places for the legs to fit. If you
have already got your bench sides attached and they are flush with the top
of the leg, then you have to route channels for the sides to fit into the
top. Just use straight edge and route between the routed leg sockets.
heu.... I am a little bit flbargasted (spelling?) here....
- the top in which I need to cut the 3 inches and 1/2 dadooes is around 150
lbs, 8 feet long 4inch thick... how will I move that thing on a table saw?
- where in hell can you find a 3 & 1/2 inch thick dadooe blade?
- which table saw do you have that accept such huge amont of material and
to solutions pop to my mind:
- you were being sarcastig (and the joke is on me)
- you pressed the send button too fast (and the joke is on you)...
in all cases, I imagine that most of your wood working friends will have
great fun at your expense over that answer (and a lager) !
Have a great day, Cyrille, Smiling
Sounds more like you are doing a half lap joint, not a dado, but the
technique is the same.
Setup DADO set to the max width your dado set will go to, then using a
sled or a miter guage and make multiple passes to give you the 3 5/8
in laptop joing you want
OR, use a router and clamp 2 straight edges to the workpiece so that
the when you ride the router against the straight edges, they will
give you the 2 outside dados then hog out the inside
On Thu, 03 Feb 2005 16:18:05 GMT, "cyrille de brébisson"
Like Leon says, router with multiple passes. I would add: Use a
straightedge clamped at a proper distance to guide the router. Start at
the far end.
But why do you need a dado/groove? I assume your legs are a frame or a
trestle, and you want the top of the frame housed (encastre)(1) into the
top. I don't see the need. The top of my workbench is held by one 5" long
5/16" lag bolt in the centre of each trestle/frame, screwed in from
underneath. Plenty strong enough and it allows for differential wood
(1)How the hell do you get an "accent aigu" on this damn Linux stuff? It's
a French product (Mandrake) so it should be easy, you figure.
Replace "nonet" with "yukonomics" for real email
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